KB542LCA.010 M8 114/117 to 120" big bore conv. piston set. +.010"

For those looking to push their Milwaukee-Eight 114 or 117 engine to a 120-inch displacement, this KB Performance forged piston set is a serious bit of kit. Sold as a set, these +.010" oversized pistons feature hard-anodized crowns and top ring grooves to combat heat and prevent micro-welding. What sets these apart is the Line2Line abradable coating, which allows for a zero-tolerance installation; the pistons actually establish their own perfect 0.003" clearance during the break-in period for a superior ring seal. These are designed for 2017 to 2024 114-inch M8 models where the cylinders are bored to 4.125". Because they match the OEM weight, no crankshaft rebalancing is required, and they work perfectly with the stock 4.500" stroke to achieve a 10.9:1 compression ratio.