KB Performance 120" Big Bore +.030" Super Duty Forged Piston Kit Harley 17-20 M8

Designer: KB Performance

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SKU KB542LCA.030
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Part # KB542LCA.030

KB Performance 120" Big Bore Super-Duty Forged Piston Kit for 114"/117" M8 Engines

Fits Harley 2017+ M-Eight 114"/117" Models

+0.030" Bore

Super Duty Series includes:

Anondized top ring groove and crown

New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder

Skity coating eliminates piston rock for the best possible ring seal with no piston slap noise
Round wire locks

Steel nitride top ring with a Ductile Napier second

Forced wrist pin oiling

Flat Top 1.2cc design with oversized valve pockets to accept 1mm larger valves

Compression Height 1.083"

Factory 117" Cylinders can safely be bored to 4.125" through 4.165"

Bore Size: 104,77 mm / 104.77 mm

Piston Size: +0.030

Displacement: 117"

Stroke Length: 4-1/2" / 4-1/2"

Compression Ratio: 11:0:1 / 11:0:1