As low as $54.42/mo with or . (Pay in 4 interest-free payments)
KB PERFORMANCE Hypereutectic Piston Kit (3.875" Standard, 10.0:1) Upgrade your Twin Cam performance with the KB PERFORMANCE Hypereutectic Piston Kit, engineered for tight fit, consistent wear, and improved ring sealing on 103" and 96" Twin Cam Big Bore applications. Built from premium T-5 heat-treated 390 hypereutectic aluminum , these pistons are designed to enhance durability while helping maintain stable performance under heat. Key Features Manufactured from high-strength T-5 heat-treated 390 hypereutectic aluminum Allows a tighter fit for longer piston and ring life Diamond-machined pistons held to ±1 gram weight tolerance and less than .0005" piston-to-piston consistency Kit includes two pistons, pins, spiral-lock pin clips , and Hastings moly rings Rings sold separately for replacement needs KB pistons install tighter than many competitors to reduce piston rock and improve ring seal (follow included clearance instructions) Due to piston design/thermal properties, pay special attention to top ring end gap during installation Specifications Bore Size: 3.875" (Standard) Compression Ratio: 10.0:1 Piston Head Shape: Flat Top Stroke Length: 4.375" Ring Material: Moly Coated Displacement: 103" (102/103 configuration dependent) Riding Style: Street Product Type: Piston Kit (Units: Kit) Weight: 2.6 lbs | Dimensions: 6.29" x 6.09" x 5.78"
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") tolerances from piston to piston
Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
Replacement piston rings sold separately
KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.
Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
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