Kb Performance

KB Performance #KB297.020 - Piston Kit - 3.498" +0.020" - 8.3:1 CR - 4.250" Stroke - 80" Big Twin

Piston Kit - 3.498" +0.020" - 8.3:1 CR - 4.250" Stroke - 80" Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined...

KB Performance #KB297.040 - Piston Kit - 3.498" +0.040" - 8.3:1 CR - 4.250" Stroke - 80" Big Twin

Piston Kit - 3.498" +0.040" - 8.3:1 CR - 4.250" Stroke - 80" Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined...

KB Performance #KB297.STD - Piston Kit - 3.498" Standard - 8.3:1 CR - 4.250" Stroke - 80" Big Twin

Piston Kit - 3.498" Standard - 8.3:1 CR - 4.250" Stroke - 80" Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons...

KB Performance #KB305.005 - Piston Kit - 3.498" +0.005" - 9.6:1 CR - 80" Evolution Big Twin

Piston Kit - 3.498" +0.005" - 9.6:1 CR - 80" Evolution Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons are held...

KB Performance #KB305.010 - Piston Kit - 3.498" +0.010" - 9.6:1 CR - 80" Evolution Big Twin

Piston Kit - 3.498" +0.010" - 9.6:1 CR - 80" Evolution Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons are held...

KB Performance #KB305.020 - Piston Kit - 3.498" +0.020" - 9.6:1 CR - 80" Evolution Big Twin

Piston Kit - 3.498" +0.020" - 9.6:1 CR - 80" Evolution Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons are held...

KB Performance #KB305.030 - Piston Kit - 3.498" +0.030" - 9.6:1 CR - 80" Evolution Big Twin

Piston Kit - 3.498" +0.030" - 9.6:1 CR - 80" Evolution Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons are held...

KB Performance #KB305.040 - Piston Kit - 3.498" +0.040" - 9.6:1 CR - 80" Evolution Big Twin

Piston Kit - 3.498" +0.040" - 9.6:1 CR - 80" Evolution Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons are held...

KB Performance #KB305.STD - Piston Kit - 3.498" Standard - 9.6:1 CR - 80" Evolution Big Twin

Piston Kit - 3.498" Standard - 9.6:1 CR - 80" Evolution Big TwinFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons are held to...

KB Performance #KB920C.005 - Piston Kit - 3.498" +0.005" - 9.5:1 CR - Evolution Big Twin

Piston Kit - 3.498" +0.005" - 9.5:1 CR - Evolution Big TwinFeaturesPistons forged from 4032 aluminum alloyOffset pin design for quiet operationNew superior coated skirtsEach kit contains two pistons, pins, spiral-lock pin clips and Hastings...

KB Performance #KB920C.010 - Piston Kit - 3.498" +0.010" - 9.5:1 CR - Evolution Big Twin

Piston Kit - 3.498" +0.010" - 9.5:1 CR - Evolution Big TwinFeaturesPistons forged from 4032 aluminum alloyOffset pin design for quiet operationNew superior coated skirtsEach kit contains two pistons, pins, spiral-lock pin clips and Hastings...

KB Performance #KB921C.005 - Piston Kit - 3.498" +0.005" - 10.5:1 CR - Evolution Big Twin

Piston Kit - 3.498" +0.005" - 10.5:1 CR - Evolution Big TwinFeaturesPistons forged from 4032 aluminum alloyOffset pin design for quiet operationNew superior coated skirtsEach kit contains two pistons, pins, spiral-lock pin clips and Hastings...

KB Performance #KB921C.010 - Piston Kit - 3.498" +0.010" - 10.5:1 CR - Evolution Big Twin

Piston Kit - 3.498" +0.010" - 10.5:1 CR - Evolution Big TwinFeaturesPistons forged from 4032 aluminum alloyOffset pin design for quiet operationNew superior coated skirtsEach kit contains two pistons, pins, spiral-lock pin clips and Hastings...

KB Performance #KB921C.020 - Piston - Evolution

Piston - EvolutionFeaturesPistons forged from 4032 aluminum alloyOffset pin design for quiet operationNew superior coated skirtsEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly ringsSpecsBore Size3.498"UnitsKitBore -...

KB Performance #RRN-81-4PK - Wrist Pin Lock Ring - '41-'99 Knucklehead/Panhead/Shovelhead/Sportster/EVO

Wrist Pin Lock Ring - '41-'99 Knucklehead/Panhead/Shovelhead/Sportster/EVOFeaturesReplacement piston lock rings for KB Performance Piston KitSpecsUnits4 PackProduct NameWrist PinApplicationPistonTypeLock RingRiding StyleStreet

Kb Performance KB292.010 - Piston Kit - XL

Hypereutectic Piston Kit Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy Allow a tighter fit and longer piston and ring life Diamond-machined pistons are held to plus or minus one gram weight and less than...

Kb Performance KB295.005 - Piston Kit - XL

Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy Allows a tighter fit and longer piston and ring life Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005")...

Kb Performance KB297.030 - Piston Kit

FeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (...