Brand New
Part # KB542LCA.STD
KB Performance 120″ Big Bore Super-Duty Forged Piston Kit for 117″ M8 Engines
Fits Harley 2017+ M-Eight 117″ Models
4.125″ 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: Standard
Displacement: 117″
Stroke Length: 4-1/2″ / 4-1/2″
Compression Ratio: 11,0:1 / 11.0:1