Description
Rocker Box Performance Kit with Feuling Gorilla Kit for 1999-2017 Harley Twin Cam Models
CSR Billet Rocker Arm Supports
- Machined from 7075 billet aluminum
- Heavy-duty construction eliminates flexing when using high-lift cams and springs
- Replaces factory cast part perfectly
- Made in USA to our specifications
CSR Billet Crankcase Breathers
- Made out of billet aluminum
- Uses the updated style umbrella valves to accurately and instantly release crankcase pressure while preventing outside atmosphere to be pulled back into the engine
- Lighter and stronger than the stock steel crankcase breathers
S&S Forged Roller Rocker Arm Kit 900-4065A
- Constructed from forged 4140 steel that has been heat-treated then shot-peened to provide added strength and protection
- Rocker arms feature 3/4 in. long bushings instead of 1/2 in. long bushings normally found on most other rocker arms
- The modified lubrication system provides unrestricted roller oiling
- Adjustable pushrods must be used; sold separately
- Its recommended that new rocker shafts be used when installing roller rocker arms; also sold separately
- Made in the U.S.A.
Feuling Gorilla Rocker Shafts & Bolt Kit 1237
- Gas nitrided and final surface treated
- Kit includes the shafts and our ARP bolts
- Recommended for all Twin Cam engines and especially for engines running higher lift camshafts and heavier valve spring pressures
