S&S CYCLE Roller Rocker Arms 900-4098A

Stock rocker arms are the weak link in high-revving Shovelhead engines—they flex under load, lose valve timing precision, and wear prematurely. S&S Cycle's Roller Rocker Arms replace that compromise with forged steel construction and 50% larger bushings, delivering consistent valve actuation and dramatically extended service life. If you're serious about reliable power, these are the foundation you need.

The .750" bushing diameter is the critical difference here. It spreads loads across significantly more surface area than stock .500" bushings, reducing wear rates and maintaining tighter clearances over thousands of miles. Combined with the 1.5:1 rocker ratio, you get improved valve lift and more aggressive cam ramp profiles without sacrificing stability.

Installation is straightforward on S&S billet rocker boxes. Stock boxes may require minor clearancing, but the bolt-on design means no exotic fabrication work. Pair these with S&S Shovelhead-style tappet guides and pushrods, and you can oil everything through the pushrod passages—eliminating external lines and simplifying your top-end.

• 4140 forged steel construction
• Heat treated for strength
• .750" diameter bushings
• 1.5:1 rocker ratio
• Fits stock/S&S rocker boxes
• Roller rocker design
• Set of four arms
• Made in U.S.A.
• Bolt-on installation
• Compatible with S&S tappet guides