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Features & Benefits:-Designed with strength in mind, with over double the strength of the factory & or our competitors shafts. Precision ground from 4140HT steel, gas nitrited & final surface treated.Custom tooling was created to provide a countersink relief for the bolt/nut head verses machining aw...

Features & Benefits:-Designed with strength in mind, with over double the strength of the factory & or our competitors shafts. Precision ground from 4140HT steel, gas nitrited & final surface treated.Recommended for all Twin Cam engines and especially for engines running higher lift camshafts and he...

Features & Benefits:-Designed with strength in mind, with over double the strength of the factory & or our competitors shafts. Precision ground from 4140HT steel, gas nitrited & final surface treated.Custom tooling was created to provide a countersink relief for the bolt/nut head verses machining aw...

Features & Benefits:-Kit Includes Upper Rocker Cover OEM #’s 17503-84 & 17528-84Kit Includes Middle Rocker Cover OEM #’s 17510-84 & 17529-84Kit Includes Lower Rocker Cover OEM #’s 17521-84 & 17530-84Kit Includes Gaskets.Sold as a Pair.

Features & Benefits:-Fits Sportster 1986up.Fits Evolution Big Twin 1984-1999.Fits Twin Cam 1999-2017.Replaces OEM #’s 17360-83 & 17375-83.Proudly Made in the USA by S&S Cycle

Features & BenefitsOEM-style rocker box.Hardware Included.Sold as a Pair.Uses OEM rocker arm support and gasketsReplaces OEM # 17572-99 & 17573-99People who Buy this Product also Purchase:-Rocker Cover Gasket Kit # JGI-17033-99 or # CG-C9588

Features & BenefitsOEM-style rocker box.Hardware Included.Sold as a Pair.Uses OEM rocker arm support and gasketsReplaces OEM # 17572-99 & 17573-99People who Buy this Product also Purchase:-Rocker Cover Gasket Kit # JGI-17033-99 or # CG-C9588

Features & Benefits:-Kit Includes Upper Rocker Cover OEM # 17528-92Kit Includes Middle Rocker Cover OEM # 17529-92Kit Includes Lower Rocker Cover OEM #17530-92Kit Includes Gaskets.Sold as a Pair.

Features & Benefits:-Top End Guardian Kit has S&S proven performance parts to eliminate weak points in your M8 top endEverything you need in one convenient kit!Rocker arm shafts are more durable than stockRocker arm stud kit extends the life of your cylinder heads by preventing damage to the rocker...

Features & Benefits:-Polished FinishFor all shovelheads 1966-1984.Includes two rocker cover stud spacers for both the 1966-1981 (short stud) and 1982-1984 (long stud) applications.Suggested Additional Purchase:Rocker Cover Gaskets # JGI-17540-99-XReplaces OEM # 17516-77BReplaces OEM # 17517-77BRepla...

Features & Benefits:-Forged Roller Rockers.Engine builder MUST check rocker arm to rocker cover clearance.Clearancing may be required.S&S roller rockers are forged from 8620 steel & heat-treated.Our rockers also utilize 3/4″ long bronze bushings, compared to the more common 1/2″ long bushings or...

Features & Benefits:-Sold as a Kit.Tech Tips:-SS90-4351 Rocker Shafts are required if using the S&S Shovel Rocker Covers.OEM Rocker shafts can be re-used if running OEM Rocker Covers.Proudly Made in the USA by S&S Cycle

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 t...

Features & Benefits:-Machined from billet 6061 aluminum with square surfaces, promoting excellent umbrella valve sealing, longer main breather exit nipples with dual O-rings to promote better breather system sealing.Properly sized breather inlets and location for optimum engine breathing.Unique desi...

Features & Benefits:-Kit Includes Upper Rocker Cover OEM # 17501-86 / 17551-96Kit Includes Middle Rocker Cover OEM # 17533-86 / 17538-96Kit Includes Lower Rocker Cover OEM #17532-86 / 17537-96Sold as a Pair.

The crew here at S&S Cycle have been working on our new Billet Head Breathers, crafted from premium 6061 aluminum and anodized in the iconic S&S Blue. Our new breathers feature a dual O-ring design, ensuring a superior seal in the head, minimizing leaks, and maximizing performance. We also developed...

Crafted from premium 6061 aluminum and anodized in the iconic S&S blue, they look good and perform even better. Inside you will find our proprietary Labyrinth design to significantly reduce oil pass-through, keeping your engine running cleaner.6061 Aluminum for Increased durability over stockUnique...

Features & Benefits:-Machined 6061-T6 billet aluminum constructionHelps oil drain more efficiently into the rockerReduces oil misting coming from the engine breathersMade in the U.S.A.

Features & Benefits:-Optimises Engine Breathing on Twin Cam EnginesProperly sized breather holes provide enhanced breather performanceMachined from billet 6061 aluminium with square surfaces promoting excellent gasket and breather system sealing.Includes billet breather housings, gaskets, breather f...

Use on all Big Twin 1984-2017 (Note: Fits Twin Cam)Use on Sportster 1986-2021.Use on Buell (except 1125R)These bushings are manufactured from solid billet bearing bronze bar stock. I.D. is.557″. Intended for hone only. Install bushings with JIMS# Tool No.2357.Sold as a Pack (8).Replaces OEM # 1742...

Features & BenefitsOEM-style rocker box.Hardware Included.Sold as a Pair.Uses OEM rocker arm support and gasketsReplaces OEM # 17707-11 & 17709-11People who Buy this Product also Purchase:-Rocker Cover Gasket Kit # JGI-17033-99 or # CG-C9588

Features & Benefits:-Std. O.D. on big end is.937″, smaller end is.434″.This rocker shaft replaces H-D# No. 17611-66BSold each – 4 Required Per BikeProudly Made in the USA by JIMS

Features & Benefits:-Replaces OEM # 17360-66Suggested Additional Purchase:Rocker Shaft: BAI-04-0986 or JM-17611-66B

Features & Benefits:-Replaces OEM # 17375-66Suggested Additional Purchase:Rocker Shaft: BAI-04-0986 or JM-17611-66B