5145-6093 PERFORMANCE HYPEREUTECTIC PISTON KIT COMP. RATIO 10,5:1 BORE 3,750″+0,005″ FOR 99-06 88″ TWIN CAM

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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
Use lock rings Part #5148-0001 (4-pk)

BORE SIZE
3,750″

COMPRESSION RATIO
10,5:1

UNITS
Kit

PRODUCT NAME
Piston Kit

PISTON MATERIAL
Hypereutectic Alloy

COMPRESSION RATIO IMPERIAL
10.5:1

BORE OVERSIZE – IMPERIAL
+0.005″

BORE – OVERSIZE
+0.005″