900-1090 | Rocker Arm Shaft Set for 2017-Up M8 Models Vest Extenders '11-Earlier Dyna

'11-Earlier Dyna

appropriate camshafts

Magic Spots - 2-5/16" - Amber - Chrome

Fitment 2021-2022 Harley-Davidson Sportster S RH1250S

900-1090 | Rocker Arm Shaft Set for 2017-Up M8 Models Vest Extenders '11-Earlier DynaS&S Cycle 900 1090 Big lift cams can open up the high rpm potential of the M8 powerplant, but they can also cause their own issues due to the extra stresses and stock valvetrain geometry. Excessive valve thrust and valvetrain wear drove S&S engineers to design stronger, more durable components that will help you get the most out of your M8. S&S Forged Roller Rocker arms for M8 models are stronger, more durable and easier on the rest of your