KB, 107" to 124" M8 Std Big Bore Piston Conversion Kit for Harley-Davidson

Forged Super Duty Series for the Milwaukee Eight engine.
With hard anodized crown and top ring groove to reflect heat and prevent "micro-welding" between the ring and groove.
The Line2Line abrasive self-lubricating powder coating technique allows for zero-tolerance installation; the final tolerance will be 0.003".
The piston creates its own perfect tolerance during break-in; the coating automatically provides the tightest and most perfect fit possible between the piston and cylinder to prevent piston wobble and achieve the best possible ring seal.
Note: Fits 107" M8 engines.
Works with stock, unmodified 4.375" stroke cylinder heads.
4.25" bore replacement cylinders are required.
- 11.4:1 CR
- Piston weight: OEM
- Engine displacement: 124"
- Inner diameter: 4.25"
- Stroke: 4.375" (107" stock engine)
- Segment package: 1.5mm, 1.5mm, 3.0mm
- Top land: 0.230
- Pin number: 0.9270x2.250x0.180-SCR415H
- Pin type: Floating
- Pin diameter: 0.927"
- Compression height: 1.155"
- Crown Type: Dome
- Crown (cc): -2cc
- Alloy: Forged 4032 Alloy

Compatible with: > 17-24 M8 with 107" engines