Part Number: 11-0227 Application: 1978-1984 FL1978-1984 FX1979-1983 FLT1982-1983 FXR Details:Replica 3-1/2 bore piston set has a 8:1 compression ratio and is .010 oversize. Piston set includes Hasting rings 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast. **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.UOM: KIT Country of Origin: TAIWAN