900-1090 | Rocker Arm Shaft Set for 2017-Up M8 Models Vest Extenders Drag Specialties 1204-0113

Drag Specialties 1204-0113

Spread Spectrum Technology

2022 Harley-Davidson Touring FLTRX Road Glide

'11-Earlier Dyna

900-1090 | Rocker Arm Shaft Set for 2017-Up M8 Models Vest Extenders Drag Specialties 1204-0113S&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