883cc Conversion Piston Set Standard 3.498 for Harley Sportster

Description

Sifton piston kit includes reverse domed pistons and Hasting rings.Piston set has a 9.5:1 compression. Piston to cylinder wall clearance is .0015 minimum to .0022 maximum, with .002 preferred. No head work is necessary on this Big Bore kit. **Note:Run engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears, in order to properly break-in new pistons and rings.