ICON FHR (Forged Head Relief) PISTONS

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2 KB MOTORCYCLE PISTONS KB Performance pistons for Harley and Indian motorcycles are offered in Hypereutectic 390 alloy and Forged 4032 low expansion alloy. Our 4032 alloy is preferred for high performance / high compression applications. We offer offset wrist pins for a quiet engine and most have coated skirts. The low expansion alloy allows for a tighter piston to wall running clearance. V-Twin Harleys EVO Knuckle Shovelhead Sportster Indian Power Plus ICON PREMIUM FORGED PISTONS Premium High ductility 2618 alloy Nitrous, Turbo-Charged and Super-Charged Apps Dual forced pin oiling on most applications Lateral gas porting on higher compression ratios Fully machined with deep valve pockets Second land accumulator grooves Top land mini groove technology Diamond finished skirts Triple wound spiral locks Spacer rings included in short compression heights that intersect the wrist pin bore ICON FHR (Forged Head Relief) PISTONS Premium 4032 alloy Second land accumulator grooves Top land mini groove technology Diamond finished skirts Triple wound spiral locks Spacer rings included in short compression heights that intersect the wrist pin bore BOTH ICON SERIES FEATURE: Over 100 applications on the shelf Over 360 different part number oversizes Available in kits with rings ICON POWERSPORTS PISTONS A brand new selection of specially designed pistons for the Powersports Industry, with applications now in stock for: Off Road Motorcycle ATV, UTV Personal Watercraft Snowmobile SILV-O-LITE PISTONS Coated skirts Floating wrist pins where applicable Application specific aluminum alloys Diamond finished skirts Pin hole accurate to +/ KB HIGH PERFORMANCE PISTONS 390 Hypereutectic alloy Fully machined crowns and valve reliefs Drilled oil drain backs Full floating wrist pins Triple wound spiral locks Over 190 different oversize part numbers Reflective alloy allows 2% power increase Applications available with 5/64th and 1/16th ring packs. Vast assortment of compression ratios available in dish flat top and dome styles Quench dome technology minimizes deterioration Zero deck quench designs Lightweight wrist pins available in most applications All part numbers available in kits with rings KB CLAIMER PISTONS Available for Chevy 350, 383 and 400 c.i. engines 390 Hypereutectic alloy Moly coated skirts Full floating wrist pins Triple wound spiral locks Over 190 different oversize part numbers Reflective alloy allows 2% power increase Applications available with 5/64th and 1/16th ring packs. Vast assortment of compression ratios available in dish flat top and dome styles Quench dome technology minimizes deterioration Zero deck quench designs Lightweight wrist pins available in most applications All part numbers available in kits with rings

3 Selecting The Piston Alloy For Your Application Kb Performance Pistons are offered in two materials : Hypereutectic cast 390 Alloy found in the GREEN SECTION Forged 4032 Alloy found in the GRAY SECTION Hypereutectic Alloy is a cast 16% high silicon content material that has very high thermal barrier properties along with a low thermal expansion rate. This alloy is perfectly suited for an air-cooled engine. Tight piston-to-cylinder are used to achieve better ring seal and a quiet running engine. Hypereutectics are best suited for Street Bikes using stock or mild compression ratios to 10.5:1 running on pump fuel. With the high silicon content, these pistons will resist skirt wear the best. Models that end in a C come with Anti-Friction skirt coating. Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then fully machined. The combination of this alloy and forging process allows the piston to flex under detonation or pre-ignition, giving the best resistance to cracking. Since 4032 alloy has a low expansion rate but higher than Hypereutectic, it will require about a.001 wider piston to wall clearance. Forged pistons are suited for Street or Race with power adders such as NOS or boost. Models that end in a C come with Anti-Friction skirt coating United Engine & Machine Co. Inc Corbett St. Carson City, NV Phone: or FAX: tech@uempistons.com Web: Table of contents Tech Tips & Installation Hypereutectic...5 Sportster Evolution Knuckle, Pan and Shovelhead Twin Cam Twin Cam Indian Forged...10 Evolution Evo-Sportster Knuckle, Pan and Shovelhead Twin Cam Twin Cam Application Listing Numerical Listing Diametrical Listing

4 Tech Tips & Installation hypereutectic motorcycle APPliCATion Your KB Hypereutectic motorcycle pistons are made from a high silicon aluminum alloy. Hypereutectic alloys have less thermal expansion and lower thermal conductivity than a typical cast or forged piston alloy. In addition to greater thermal properties, Hypereutectic alloys have 16% silicon which gives superior wear properties. The low thermal conductivity of this alloy requires engines running hypereutectic pistons to reduce total ignition timing 2 to 4 degrees. Kb ForgeD motorcycle APPliCATion KB s Forged motorcycle line is supplied in 4032 alloy in new lightweight designs. it is important to remember that specifications for hypereutectic and forged applications be kept separate. The spreadsheet below is for general clearance guidelines for KB Pistons, but final sizing needs to be based on your application and conditions. minimum Piston Clearance Top ring end gap Factor material Type hypereutectic Forged Application hypereutectic Forged bore size under above under above Stock / Light Bike Clearance built into the piston all oversizes except STD Hi Comp / Touring Clearance built into the piston for STD only :1 / Boosted Standard sizes have.005 clearance built into the pistons. This allows a used standard cylinder to be honed.001 for second ring end gap Factor clean up to get.0015 clearance. ATTENTION: New cylinders must be checked for proper piston to wall clearance and may require honing. All Note: Hypereutectic alloy used in KB motorcycle applications has a low rate of thermal expansion so care must be taken not to over clearance your engine. Street motors rarely need more than.0015 piston to wall clearance. For extreme applications, pistons rarely need more than.002 piston to wall clearance. Your clearance must be based on your application and variables. HYPEREUTECTIC PISTONS:The low thermal conductivity of this alloy requires engines running hypereutectic pistons to reduce total ignition timing 2 to 4 degrees. Final timing may vary with your application (example - nitrous). ToP ComPression ring important!! ring end gap important!!! Calculating your top ring end gap. To find proper ring end gap, multiply your bore size by the ring end gap factor listed on the chart (i.e. hypereutectic, Light duty bore x.0065 gap factor =.022 total top ring end gap). Kb hypereutectic AnD Premium ForgeD motorcycle PisTons nominal CleArAnCes The following standards are used on all KB Hypereutectic and Premium forged motorcycle noncoated pistons. All KB motorcycle pistons come with clearance built into the piston. An example is a hypereutectic piston at.010 over would have the cylinder bored to and we would supply the piston at for a clearance of Final piston clearance should be based solely on the demands of your application. Consideration should be given to such things as components being used, demands of the application, climatic conditions, fuel, Coated Piston note: Do not measure over coating desired compression ratio, just to mention a few. Typically, additional clearance is honed into the cylinder if more demanding applications are intended, and there may be cases where reduced clearance is acceptable. The chart above is for general clearance guidelines, but final sizing needs to be made based on your conditions. Hypereutectic and forged applications have different minimum clearance requirements. Pin lubrication AnD installation 1. It s suggested a high quality engine assembly lube be used between pin and pin bore. Failure to properly lubricate may result in pin seizure. 2. You should never use grease when lubricating the pin and pin bore. Grease acts as a dam and prevents oil from getting to the pin. CAlCulATing ComPression ratios When calculating compression ratios, KB treats a dish designed piston as a positive number. This is because a dish adds volume to the cylinder head. All KB dish pistons receive a positive cc volume. The reverse is true for all dome style pistons. Since the dome removes volume from the cylinder head we give all domes a negative cc volume. Remember this when calculating compression using the KB calculator on our website uempistons.com. 2 KB Pistons

5 Tech Tips & Installation, continued spacer ring installation spiral ring onto Piston Dimple (facing down) gap spacer ring Spacer Ring supports the oil rail on applications where the wrist pin is moved into the oil groove. Pin Axis oil groove spacer ring installation Locate the spacer ring in the bottom of the oil groove. Rotate the gap 90 deg. from pin axis. Place dimple over gap formed by pin intersecting the oil groove (dimple facing down). Spiral the ring down into the pistons oil groove. Take care not to over expand the ring, possibly causing permanent deformation on installation. spiral retaining ring installation AnD use retaining ring installation: 1. The spiral retainer comes unsprung. KB suggests that you slightly spring the retainer about 1/2-3/4 buy grasping both ends and stretching it. This will help with installation. unsprung 2. Installation of the retaining ring. Place the end of the retaining ring into the retaining ring groove in the piston. Using a small screwdriver press the retaining ring in place. Move around the pinhole in a circular pattern to spiral the complete retainer into the groove. Make sure the retainer is completely in the groove as it will unwind and lead to failure. sprung installation of motorcycle PisTon WiTh symmetrical AnD AsymmeTriCAl VAlVe reliefs When installing KB Motorcycle Pistons that have symmetrical valve reliefs, the piston can be turned so either valve is pointing toward the center of the engine. The piston can be fit in either the front or rear cylinder. If the piston has symmetrical valve reliefs but has a relief cut in the skirt tip, the cut relief must be oriented toward the center of the engine. The piston can be fit in either the front or rear cylinder. Piston skirt tip clearance should always be checked. When installing KB Motorcycle Pistons that have asymmetrical valve reliefs (intake larger than exhaust), the intake should always be oriented toward the center of the engine. The piston can be in either the front or rear cylinder. Cut relief on skirt symmetrical Valve relief Asymmetrical Valve relief Center Front intake rear Center United Engine & Machine,

6 Tech Tips & Installation, continued installation of 883CC To 1200CC ConVersion AnD 1340CC PoP-uP These pistons have asymmetrical valve reliefs and head designs. Put the intakes to the center of the engine and the quench toward the carburetor. 1340cc Pop-up 883cc to 1200cc Conversion Carburetor Carburetor installation of sportster Domes The pistons are marked front and rear. Intakes toward the middle of the engine. Dome toward the carburetor. Front Piston Carburetor rear Piston offset Pin orientation The forged KB Motorcycle line is supplied with offset pins. Offset pins are designed to quiet your engine. The offset must always be towards the thrust face side of the engine. rear Cyl Thrust Face Front Cyl Thrust Face Clockwise engine rotation from right side of bike WArrAnTy DisClAimer Due to the nature of performance applications, the parts sold by United Engine & Machine Co. Inc. are sold without any express warranty or any implied warranty of merchantability or fitness for a particular purpose. UEM shall not, under any circumstances, be liable for any special, incidental or consequential damages, including, but not limited to damage, or loss of profits or revenue, cost of purchased or replacement goods, or claims of customers of the purchaser, which may arise and/or result from sale, installation or use of these parts. UEM reserves the right to make product improvements or changes without notice and without incurring liability with respect to similar products previously manufactured. The information contained in this instruction should not be considered absolute. Final decisions concerning the installation and use of these products are ultimately the responsibility of the customer. UEM makes no guarantee of warranty on emissions. 4 KB Pistons

7 Hypereutectic Series Fully machined head and valve reliefs mini grooves to reduce scuffing if overheated spiral lock style lock rings Accumulator groove aids with compression ring seal Diamond finished skirts CnC machined pin bores produce straight and accurately sized bores Sportster hypereutectic Sportster 54ci / 883cc mm.791 / STD mm Centered Kb408C Flat Top with 9.0:1 Piston 253 Hypereutectic Coated Skirts. See +1.2cc w/49cc Pin 77 Alloy instructions for coated. 2M X216K RRN-81 Not Used Sportster Ironhead 61ci / 1000cc / / STD /16 Centered Kb292 Dome with 8.2 Piston 335 Hypereutectic -48.9cc w/112cc Pin 97 Alloy 2M X216K RRN-81 Not Used EVO-Sportster 1200XL / 1100cc / / STD /16 Centered Kb264 Flat Top with 9.0:1 Piston 349 Hypereutectic +0.8cc w/69cc Pin 97 Alloy Kb295 Flat Top with 8.9:1 Piston 349 Hypereutectic.044 deeper valve +1.6cc w/69cc Pin 97 Alloy pockets than KB264 2M X216K RRN-81 R-102 / STD R-103 /.030; R-104 /.040 Motorcycle Pistons Hypereutectic 5

8 Sportster, continued hypereutectic EVO-Sportster 74ci / 883 to 1200 Conversion See Notes 2-1/ / STD /16 Centered Sportster XR1200 and Buell Present Kb410 Flat Top with 9.1:1 Piston 310 Hypereutectic Piston is.125 below +0.05cc w/51cc Pin 97 Alloy deck, Comp Hgt Kb272 Dish with 10.0:1 Piston 335 Hypereutectic Compression +10cc w/51cc Pin 97 Alloy Hgt. Also works with 1200 Head but will lower comp. to 8.1:1 2M X216K RRN-81 R-102 / STD R-103 /.030; R-104 /.040 NEW / / STD /16 Centered Kb414 Dome with 9.2:1 w/69cc Piston 360 Hypereutectic Can be used with -1cc 10.1:1 w/62cc Pin 97 Alloy XL1200 Heads 11:1 w/55cc 2M X216K RRN-81 R-102 / STD R-103 /.030; R-104 /.040 Evolution hypereutectic Evolution 80ci 1340cc Stock Bore and Stroke / / STD /16 Centered Kb258 Flat Top with 8.6:1 Piston 350 Hypereutectic +0.8cc w/80cc Pin 97 Alloy Kb305 Dome with 9.6:1 Piston 392 Hypereutectic -9cc w/80cc Pin 97 Alloy Solid Dome Kb266 Dome with 10.5:1 Piston 360 Hypereutectic -16.5cc w/80cc Pin 97 Alloy Hollow Dome 2M X216K RRN-81 Not Used 6 KB Pistons All Pistons sold as sets of two with rings, pins and locks.

9 Knuckle, Pan & Shovelhead hypereutectic Knuckle, Pan and Shovelhead 74ci FL,FLH,FX / / STD /16 Centered Kb263 Hemi Dome 9.0:1 w/112cc Piston 370 Hypereutectic 9.0:1 at Zero Deck with -42.3cc 7.8:1 w/112cc Pin 97 Alloy Clearance; 7.8:1 at Deck Clearance Piston Oversizes Ring Set Pin # Lock # STD M X216K RRN M6127.STD 0792X216K RRN M X216K RRN M X216K RRN-81 Shovelhead 80ci FL,FLH,FX / / STD /32 Centered Kb288 Hemi Dome 7.2:1 Piston 357 Hypereutectic 7.2:1 at Deck with -29.3cc w/117cc Pin 97 Alloy Clearance Kb297 Hemi Dome 8.3:1 Piston 388 Hypereutectic 8.3:1 at Deck with -45.4cc w/117cc Pin 97 Alloy Clearance 2M X216K RRN-81 Not Used Shovelhead 88-98ci BIG BORE STROkER to / / STD /16 Centered Kb294 Hemi Dome 8.5:1 w/117cc Piston 357 Hypereutectic 8.5:1 w/ stroke with -42.3cc 9.38:1 w/117cc Pin 97 Alloy deck clearance 9.38:1 w/ stroke deck clearance 2M X216K RRN-81 Not Used All Pistons sold as sets of two with rings, pins and locks. Motorcycle Pistons Hypereutectic 7

10 Twin Cam 88 hypereutectic Twin Cam 88ci Stock Bore / Stroke / / STD /32 Centered Twin Cam BIG BORE 95ci Stock Stroke / / STD /16 Centered Kb339 Flat Top 8.8:1 Piston 370 Hypereutectic with +1cc w/85cc Pin 144 Alloy Kb343 Dome with 10.6:1 Piston 430 Hypereutectic -16.8cc w/85cc Pin 144 Alloy 2M X300K PRJ100-3 Not Used Kb348 Flat Top with 9.3:1 Piston 408 Hypereutectic +1cc w/85cc Pin 102 Alloy Kb411 Dome with 10.5:1 Piston 447 Hypereutectic Replaces KB cc w/85cc Pin 102 Alloy 2M X216K PRJ100-3 R-108 / STD R-109 / KB Pistons All Pistons sold as sets of two with rings, pins and locks.

11 Twin Cam 96 hypereutectic Twin Cam Present BIG BORE 103ci Stock Stroke mm.927 / STD mm Centered Kb409C Flat Top with 10.0:1 Piston 371 Hypereutectic See instructions for +1.9cc w/85cc Pin 102 Alloy coated piston 2M X300K PRJ100-3 Not Used Indian hypereutectic Indian Power Plus 100ci / / STD /16 Centered Kb412 Flat Top with 10.5:1 Piston 455 Hypereutectic Replaces cc w/83cc Pin 89 Alloy 2M X208K RRN-81 Not Used All Pistons sold as sets of two with rings, pins and locks. Motorcycle Pistons Hypereutectic 9

12 Forged Series 4032 Alloy with 11% silicon Fully machined head and valve reliefs spiral lock style lock rings CnC machined pin bores produce straight and accurately sized bores mini grooves to reduce scuffing if overheated Accumulator groove aids with compression ring seal Diamond finished skirts Anti Friction skit coatings on numbers that end with a C Evolution Forged Evolution 80ci / / STD /16 Offset Kb919 Dish with 8.5:1 Piston 365 Forged +2.1cc w/80cc Pin Alloy Kb920 Dome with 9.5:1 Piston 390 Forged -8.5cc w/80cc Pin Alloy Kb921 Dome with 10.5 Piston 380 Forged Hollow Dome -16.7cc w/80cc Pin Alloy Design 2M X216K RRN-81 Not Used Evo-Sportster Forged Evo - Sportster 883 to 1200 Conversion 1986 Present / / STD /32 Offset 2011 & Prior 2012 Kb922C Dish with 9.0:1 Piston 335 Coated Forged See instructions for +18.1cc w/51cc Pin Alloy coated piston Kb923C Dish with 9.5:1 Piston 360 Coated Forged See instructions for +13.7cc w/51cc Pin Alloy coated piston Kb924C Dish with 10.0:1 Piston 337 Coated Forged See instructions for + 9.8cc w/51cc Pin Alloy coated piston Kb925C Dish with 10.5:1 Piston 341 Coated Forged See instructions for +6.3cc w/51cc Pin Alloy coated piston 2M X216K RRN-81 2M KB Pistons All Pistons sold as sets of two with rings, pins and locks.

13 Knuckle, Pan & Shovelhead Forged Knuckle, Pan and Shovelhead 74ci FL,FLH,FX / / STD /16 Offset Kb931 Hemi Dome 8.5:1 Piston 456 Forged 8.5:1 at deck with -47.6cc w/112cc Pin Alloy clearance Kb932 Hemi Dome 9.0:1 Piston 470 Forged 9.0:1 at deck with -52.7cc w/112cc Pin Alloy clearance 2M X216K RRN-81 Not Used Shovelhead 80ci FL,FLH,FX Stock Stroke / / STD /16 Offset Kb926 Hemi Dome 9.0:1 Piston 416 Forged 9.0:1 at deck with -47.4cc w/112cc Pin Alloy clearance Kb927 Hemi Dome 9.5:1 Piston 449 Forged 9.5:1 at deck with -58cc w/112cc Pin Alloy clearance 2M X216K RRN-81 Not Used Shovelhead 88-98ci BIG BORE STROkER / / STD /16 Offset Kb928 Hemi Dome 8.5:1 Piston 440 Forged 8.5:1 w/4.250 stroke with -42.3cc w/117cc and Pin deck stroke clearance 9.38:1 9.38:1 w/4.750 stroke w/117cc deck stroke clearance Kb929 Hemi Dome 9.5:1 Piston 470 Forged 9.5:1 w/4.250 stroke with -53.6cc w/117cc and Pin deck stroke clearance 10.5:1 10.5:1 w/4.750 stroke w/117cc deck stroke clearance Kb930 Hemi Dome 10.0:1 Piston 484 Forged 10.0:1 w/4.250 stroke with -58.2cc w/117cc Pin deck stroke clearance 11.5: :1 w/4.750 stroke w/117cc deck stroke clearance 2M X216K RRN-81 Not Used All Pistons sold as sets of two with rings, pins and locks. Motorcycle Pistons Forged 11

14 Twin Cam 88 Forged Twin Cam BIG BORE 95ci Stock Stroke mm.927 / STD mm Offset Kb904C Dome with 9.25:1 Piston 350 Coated Forged See instructions for -1.0cc w/85cc Pin Alloy coated piston Kb905C Dome with 10.0:1 Piston 370 Coated Forged See instructions for -6.7cc w/85cc Pin Alloy coated piston Kb906C Dome with 10.5:1 Piston 382 Coated Forged See instructions for -11.3cc w/85cc Pin Alloy coated piston 2M X208K PRJ100-3 Not Used Twin Cam BIG BORE 107ci Stock Stroke mm.927 / STD mm Offset Kb910C Dish with 9.5:1 Piston 400 Coated Forged See instructions for +9.4cc w/85cc Pin Alloy coated piston Kb911C Dish with 10.0:1 Piston 384 Coated Forged See instructions for +3.6cc w/85cc Pin Alloy coated piston Kb912C Dome with 10.5:1 Piston 401 Coated Forged See instructions for -1.5cc w/85cc Pin Alloy coated piston 2M X208K PRJ100-3 Not Used 12 KB Pistons All Pistons sold as sets of two with rings, pins and locks.

15 Twin Cam 96 Forged Twin Cam Present BIG BORE 103ci Stock Stroke mm.927 / STD mm Offset Kb907C Dish with 9.5:1 Piston 335 Coated Forged See instructions for +6.9cc w/85cc Pin Alloy coated piston Kb908C Flat Top with 10.0:1 Piston 317 Coated Forged See instructions for +1.9cc w/85cc Pin Alloy coated piston Kb909C Dome with 10.5:1 Piston 335 Coated Forged See instructions for -6.3cc w/85cc Pin Alloy coated piston 2M X208K PRJ100-3 Not Used Twin Cam Present BIG BORE 110ci Stock Stroke mm.927 / STD mm Offset Kb913C Dish with 9.5:1 Piston 350 Coated Forged See instructions for +13.3cc w/85cc Pin Alloy coated piston Kb914C Dish with 10.0:1 Piston 356 Coated Forged See instructions for +7.1cc w/85cc Pin Alloy coated piston Kb915C Flat Top with 10.5:1 Piston 354 Coated Forged See instructions for -1.5cc w/85cc Pin Alloy coated piston 2M X208K PRJ100-3 Not Used Twin Cam Present BIG BORE 117ci Stock Stroke mm.927 / STD mm Offset Kb916C Dish with 9.5:1 Piston 377 Coated Forged See instructions for +19.0cc w/85cc Pin Alloy coated piston Kb917C Dish with 10.0:1 Piston 375 Coated Forged See instructions for +12.8cc w/85cc Pin Alloy coated piston Kb918C Dish with 10.5:1 Piston 369 Coated Forged See instructions for +7.2cc w/85cc Pin Alloy coated piston 2M X208K PRJ100-3 Not Used All Pistons sold as sets of two with rings, pins and locks. Motorcycle Pistons Forged 13

16 Application Listing Application Type Head Type Ring Type Page # Evolution 80ci Kb258 hyper FT +.8cc /16, 1-3/16 pg. 6 Evolution 80ci Kb266 hyper Dome -16.5cc /16, 1-3/16 pg. 6 Evolution 80ci Kb305 hyper Dome -9cc /16, 1-3/16 pg. 6 Evolution 80ci Kb919 Forged Dish +2.1cc /16, 1-3/16 pg. 10 Evolution 80ci Kb920 Forged Dome -8.5cc /16, 1-3/16 pg. 10 Evolution 80ci Kb921 Forged Dome -16.7cc /16, 1-3/16 pg. 10 Evo-Sportster 1100/1200 Kb264 hyper FT +.8cc /16, 1-3/16 pg. 5 Evo-Sportster 1100/1200 Kb295 hyper FT +1.6cc /16, 1-3/16 pg. 5 Evo-Sportster 883 to 1200 Kb272 hyper Dish +10cc /16, 1-3/16 pg. 6 Evo-Sportster 883 to 1200 Kb410 hyper FT +.05cc /16, 1-3/16 pg. 6 Evo-Sportster 883 to 1200 Kb922C Forged Dish +18.1cc /16, 1-3/16 pg. 10 Evo-Sportster 883 to 1200 Kb923C Forged Dish +13.7cc /16, 1-3/16 pg. 10 Evo-Sportster 883 to 1200 Kb924C Forged Dish +9.8cc /16, 1-3/16 pg. 10 Evo-Sportster 883 to 1200 Kb925C Forged Dish +6.3cc /16, 1-3/16 pg. 10 Indian Power Plus 100ci Kb412 hyper FT+2.9cc /16, 1-3/16 pg. 9 Knuckle, Pan, Shovel Kb263 hyper Hemi -42.3cc /16, 1-3/16 pg. 7 Knuckle, Pan, Shovel Kb931 Forged Hemi -47.6cc /16, 1-3/16 pg. 11 Knuckle, Pan, Shovel Kb932 Forged Hemi -52.7cc /16, 1-3/16 pg. 11 Shovelhead 80ci Kb288 hyper Hemi -29.3cc /16, 1-3/16 pg. 7 Shovelhead 80ci Kb297 hyper Hemi -45.4cc /16, 1-3/16 pg. 7 Shovelhead 80ci Kb926 Forged Hemi -47.4cc /16, 1-3/16 pg. 11 Shovelhead 80ci Kb927 Forged Hemi -58cc /16, 1-3/16 pg. 11 Shovelhead 80ci to 98ci Kb294 hyper Hemi -42.3cc /16, 1-3/16 pg. 7 Shovelhead 80ci to 98ci Kb928 Forged Hemi -42.3cc /16, 1-3/16 pg. 11 Shovelhead 80ci to 98ci Kb929 Forged Hemi -53.6cc /16, 1-3/16 pg. 11 Shovelhead 80ci to 98ci Kb930 Forged Hemi -58.2cc /16, 1-3/16 pg. 11 Sportster 54ci Kb408C hyper FT +1.2cc m, 1-2.8m pg. 5 Sportster Ironhead Kb292 hyper Dome -48.9cc /16, 1-3/16 pg. 5 Sportster XR1200 Kb414 hyper Dome -1.0cc /16, 1-3/16 pg. 6 Twin Cam 88 (88ci) Kb339 hyper FT +1cc /16, 1-5/32 pg. 8 Twin Cam 88 (88ci) Kb343 hyper Dome -16.8cc /16, 1-5/32 pg. 8 Twin Cam 88 (95ci) Kb348 hyper FT +1cc /16, 1-3/16 pg. 8 Twin Cam 88 (95ci) Kb411 hyper Dome -11.1cc /16, 1-3/16 pg. 8 Twin Cam 88 (95ci) Kb904C Forged Dome -1.0cc m, 1-2.5m pg. 12 Twin Cam 88 (95ci) Kb905C Forged Dome -6.7cc m, 1-2.5m pg. 12 Twin Cam 88 (95ci) Kb906C Forged Dome -11.3cc m, 1-2.5m pg. 12 Twin Cam 88 (107ci) Kb910C Forged Dish +9.4cc m, 1-3.0m pg. 12 Twin Cam 88 (107ci) Kb911C Forged Dish +3.6cc m, 1-3.0m pg. 12 Twin Cam 88 (107ci) Kb912C Forged Dome -1.5cc m, 1-3.0m pg. 12 Twin Cam 96 (103ci) Kb409C hyper FT +1.9cc m, 1-2.5m pg. 9 Twin Cam 96 (103ci) Kb907C Forged Dish +6.9cc m, 1-2.5m pg. 13 Twin Cam 96 (103ci) Kb908C Forged Dish +1.9cc m, 1-2.5m pg. 13 Twin Cam 96 (103ci) Kb909C Forged Dome -3.6cc m, 1-2.5m pg. 13 Twin Cam 96 (110ci) Kb913C Forged Dish +13.3cc m, 1-2.5m pg. 13 Twin Cam 96 (110ci) Kb914C Forged Dish +7.1cc m, 1-2.5m pg. 13 Twin Cam 96 (110ci) Kb915C Forged Dish +1.8cc m, 1-2.5m pg. 13 Twin Cam 96 (117ci) Kb916C Forged Dish +19.0cc m, 1-3.0m pg. 13 Twin Cam 96 (117ci) Kb917C Forged Dish +12.8cc m, 1-3.0m pg. 13 Twin Cam 96 (117ci) Kb918C Forged Dish +7.2cc m, 1-3.0m pg KB Pistons

17 Numerical Listing Application Type Head Type Ring Type Page # Kb258 Evolution 80ci hyper FT +.8cc /16, 1-3/16 pg. 6 Kb263 Knuckle, Pan, Shovel hyper Hemi -42.3cc /16, 1-3/16 pg. 7 Kb264 Evo-Sportster 1100/1200 hyper FT +.8cc /16, 1-3/16 pg. 5 Kb266 Evolution 80ci hyper Dome -16.5cc /16, 1-3/16 pg. 6 Kb272 Evo-Sportster 883 to 1200 hyper Dish +10cc /16, 1-3/16 pg. 6 Kb288 Shovelhead 80ci hyper Hemi -29.3cc /16, 1-3/16 pg. 7 Kb292 Sportster Ironhead hyper Dome -48.9cc /16, 1-3/16 pg. 5 Kb294 Shovelhead 80ci to 98ci hyper Hemi -42.3cc /16, 1-3/16 pg. 7 Kb295 Evo-Sportster 1100/1200 hyper FT +1.6cc /16, 1-3/16 pg. 5 Kb297 Shovelhead 80ci hyper Hemi -45.4cc /16, 1-3/16 pg. 7 Kb305 Evolution 80ci hyper Dome -9cc /16, 1-3/16 pg. 6 Kb339 Twin Cam 88 (88ci) hyper FT +1cc /16, 1-5/32 pg. 8 Kb343 Twin Cam 88 (88ci) hyper Dome -16.8cc /16, 1-5/32 pg. 8 Kb348 Twin Cam 88 (95ci) hyper FT +1cc /16, 1-3/16 pg. 8 Kb408C Sportster 54ci hyper FT +1.2cc m, 1-2.8m pg. 5 Kb409C Twin Cam 96 (103ci) hyper FT +1.9cc m, 1-2.5m pg. 9 Kb410 Evo-Sportster 883 to 1200 hyper FT +.05cc /16, 1-3/16 pg. 6 Kb411 Twin Cam 88 (95ci) hyper Dome -11.1cc /16, 1-3/16 pg. 8 Kb412 Indian Power Plus 100ci hyper FT+2.9cc /16, 1-3/16 pg. 9 Kb414 Sportster XR1200 hyper Dome -1.0cc /16, 1-3/16 pg. 6 Kb904C Twin Cam 88 (95ci) Forged Dome -1.0cc m, 1-2.5m pg. 12 Kb905C Twin Cam 88 (95ci) Forged Dome -6.7cc m, 1-2.5m pg. 12 Kb906C Twin Cam 88 (95ci) Forged Dome -11.3cc m, 1-2.5m pg. 12 Kb907C Twin Cam 96 (103ci) Forged Dish +6.9cc m, 1-2.5m pg. 13 Kb908C Twin Cam 96 (103ci) Forged Dish +1.9cc m, 1-2.5m pg. 13 Kb909C Twin Cam 96 (103ci) Forged Dome -3.6cc m, 1-2.5m pg. 13 Kb910C Twin Cam 88 (107ci) Forged Dish +9.4cc m, 1-3.0m pg. 12 Kb911C Twin Cam 88 (107ci) Forged Dish +3.6cc m, 1-3.0m pg. 12 Kb912C Twin Cam 88 (107ci) Forged Dome -1.5cc m, 1-3.0m pg. 12 Kb913C Twin Cam 96 (110ci) Forged Dish +13.3cc m, 1-2.5m pg. 13 Kb914C Twin Cam 96 (110ci) Forged Dish +7.1cc m, 1-2.5m pg. 13 Kb915C Twin Cam 96 (110ci) Forged Dish +1.8cc m, 1-2.5m pg. 13 Kb916C Twin Cam 96 (117ci) Forged Dish +19.0cc m, 1-3.0m pg. 13 Kb917C Twin Cam 96 (117ci) Forged Dish +12.8cc m, 1-3.0m pg. 13 Kb918C Twin Cam 96 (117ci) Forged Dish +7.2cc m, 1-3.0m pg. 13 Kb919 Evolution 80ci Forged Dish +2.1cc /16, 1-3/16 pg. 10 Kb920 Evolution 80ci Forged Dome -8.5cc /16, 1-3/16 pg. 10 Kb921 Evolution 80ci Forged Dome -16.7cc /16, 1-3/16 pg. 10 Kb922C Evo-Sportster 883 to 1200 Forged Dish +18.1cc /16, 1-3/16 pg. 10 Kb923C Evo-Sportster 883 to 1200 Forged Dish +13.7cc /16, 1-3/16 pg. 10 Kb924C Evo-Sportster 883 to 1200 Forged Dish +9.8cc /16, 1-3/16 pg. 10 Kb925C Evo-Sportster 883 to 1200 Forged Dish +6.3cc /16, 1-3/16 pg. 10 Kb926 Shovelhead 80ci Forged Hemi -47.4cc /16, 1-3/16 pg. 11 Kb927 Shovelhead 80ci Forged Hemi -58cc /16, 1-3/16 pg. 11 Kb928 Shovelhead 80ci to 98ci Forged Hemi -42.3cc /16, 1-3/16 pg. 11 Kb929 Shovelhead 80ci to 98ci Forged Hemi -53.6cc /16, 1-3/16 pg. 11 Kb930 Shovelhead 80ci to 98ci Forged Hemi -58.2cc /16, 1-3/16 pg. 11 Kb931 Knuckle, Pan, Shovel Forged Hemi -47.6cc /16, 1-3/16 pg. 11 Kb932 Knuckle, Pan, Shovel Forged Hemi -52.7cc /16, 1-3/16 pg. 11 United Engine & Machine,

18 Diametrical Listing Bore Comp. Hgt. Application Type Head Type Page # Kb408C Sportster 54ci hyper FT +1.2cc pg Kb292 Sportster Ironhead hyper Dome -48.9cc pg Kb263 Knuckle, Pan, Shovel hyper Hemi -42.3cc pg Kb931 Knuckle, Pan, Shovel Forged Hemi -47.6cc pg Kb932 Knuckle, Pan, Shovel Forged Hemi -52.7cc pg Kb410 Evo-Sportster 883 to 1200 hyper FT +.05cc pg Kb922C Evo-Sportster 883 to 1200 Forged Dish +18.1cc pg Kb923C Evo-Sportster 883 to 1200 Forged Dish +13.7cc pg Kb924C Evo-Sportster 883 to 1200 Forged Dish +9.8cc pg Kb925C Evo-Sportster 883 to 1200 Forged Dish +6.3cc pg Kb264 Evo-Sportster 1100/1200 hyper FT +.8cc pg Kb272 Evo-Sportster 883 to 1200 hyper Dish +10cc pg Kb295 Evo-Sportster 1100/1200 hyper FT +1.6cc pg Kb414 Sportster XR1200 hyper Dome -1.0cc pg Kb305 Evolution 80ci hyper Dome -9cc pg Kb288 Shovelhead 80ci hyper Hemi -29.3cc pg Kb297 Shovelhead 80ci hyper Hemi -45.4cc pg Kb926 Shovelhead 80ci Forged Hemi -47.4cc pg Kb927 Shovelhead 80ci Forged Hemi -58cc pg Kb258 Evolution 80ci hyper FT +.8cc pg Kb266 Evolution 80ci hyper Dome -16.5cc pg Kb919 Evolution 80ci Forged Dish +2.1cc pg Kb920 Evolution 80ci Forged Dome -8.5cc pg Kb921 Evolution 80ci Forged Dome -16.7cc pg Kb294 Shovelhead 80ci to 98ci hyper Hemi -42.3cc pg Kb928 Shovelhead 80ci to 98ci Forged Hemi -42.3cc pg Kb929 Shovelhead 80ci to 98ci Forged Hemi -53.6cc pg Kb930 Shovelhead 80ci to 98ci Forged Hemi -58.2cc pg Kb339 Twin Cam 88 (88ci) hyper FT +1cc pg Kb343 Twin Cam 88 (88ci) hyper Dome -16.8cc pg Kb409C Twin Cam 96 (103ci) hyper FT +1.9cc pg Kb907C Twin Cam 96 (103ci) Forged Dish +6.9cc pg Kb908C Twin Cam 96 (103ci) Forged Dish +1.9cc pg Kb909C Twin Cam 96 (103ci) Forged Dome -3.6cc pg Kb904C Twin Cam 88 (95ci) Forged Dome -1.0cc pg Kb905C Twin Cam 88 (95ci) Forged Dome -6.7cc pg Kb906C Twin Cam 88 (95ci) Forged Dome -11.3cc pg Kb348 Twin Cam 88 (95ci) hyper FT +1cc pg Kb411 Twin Cam 88 (95ci) hyper Dome -11.1cc pg Kb412 Indian Power Plus 100ci hyper FT+2.9cc pg Kb913C Twin Cam 96 (110ci) Forged Dish +13.3cc pg Kb914C Twin Cam 96 (110ci) Forged Dish +7.1cc pg Kb915C Twin Cam 96 (110ci) Forged Dish +1.8cc pg Kb916C Twin Cam 96 (117ci) Forged Dish +19.0cc pg Kb917C Twin Cam 96 (117ci) Forged Dish +12.8cc pg Kb918C Twin Cam 96 (117ci) Forged Dish +7.2cc pg Kb910C Twin Cam 88 (107ci) Forged Dish +9.4cc pg Kb911C Twin Cam 88 (107ci) Forged Dish +3.6cc pg Kb912C Twin Cam 88 (107ci) Forged Dome -1.5cc pg KB Pistons

19 KB Pistons from United Engine and Machine are crafted featuring a variety of superior design elements, technical engineering differences and specialty manufacturing processes that make it clear KB should be your piston of choice: Valve-to-piston developed in concert with major engine builders for maximum compression and performance Pin fitted from our factory featuring precision pinhole diameter and finish for maximum pin oiling at higher RPM s Unique KB skirt designs Call or us today for professional advice from our high-performance specialists: Tech Questions to: tech@uempistons.com KB s in-house manufacturing capabilities enable the complete development and manufacture of your forged piston needs, ensuring a precision balance, finish and concentricity. KB Pistons are designed and manufactured by UEM, the largest piston maker in North America. Since our founding in 1922, UEM pistons has been a leader in piston design, engineering and manufacturing and we strive to build the very finest pistons for your particular application.

20 United Engine and Machine Company 1040 Corbett Street Carson City, Nevada PHONE: TOLL FREE: USA FAX ORDERS TO: Tech Support: United Engine and Machine Printed in USA