Replaces the original trim ring

08-22 Softail

Note: See 903570 for 36-46 B

Note: Requires removal of stock rear fender

KB PERFORMANCE PISTON SET +.020 Tändkablar Replaces the original trim ringDescription Forged piston set. 9. 5: 1 CR with 80cc head. Piston weight 365gr. Piston pin weight 97gr. Piston pin dia. . 792" offset. Head type: Dome with 8. 5cc. Compression height 1. 375". Bore 3. 4980". Stroke 4. 250". Rod length 7. 440". Cyl. length 5. 550". All KB forged pistons are made from 4032 alloy, a 11% silicon alloy that is formed in a forging press. Forging aluminum gives a superior strength and structural integrity on a molecular level,