JIMS

Made in the U.S.A.

The lightest rocker arm available, but still has superior strength characteristics due to its designThe strength of 660 bronze bushings and bearing-grade steel for the roller tipExtensively tested...

In an effort to perfect Milwaukee-Eight® engine valve train geometry, while improving durability, JIMS® has developed performance rocker shafts and proprietary hardwareThe rocker arm shafts are...

4130 stud and nut kit replaces the stock hardware used to secure the rocker shaftsCompared to a stock “bolt”, these JIMS manufactured studs allow the technician the assembly finesse required when...

Cast from 4340 heat-treated chromoly steelReduce friction in the valve train, providing more horsepower and less heat in the top endInclude 660 bronze bushing fit to .0007" - .0012" for the best wear...

Made from the highest grade materials and heat-treated to JIMS strict standardsFeature a 10?? lock angleWork well with JIMS titanium valve spring retainersMade in the U.S.A. Harley-Davidson --...

Incorporate an interference double-spring design with damper to control harmonicsEngineered for maximum performance in severe applications such as high compression and big-inch street motors.600"...

Made from 52100 bearing materialIncludes 4340 chromoly axleMade in the U.S.A.

Micro-finish bore allows a running fit of .0002"Big Axle? rollers are designed around three working partsThe outer wheel/roller has a 27% greater wall size - less harmonic distortion for better...

These tappets will run in cast iron or aluminum tappet blocksRecommend fitting the tappets to the blocks with a clearance of .0007" to .0012"Produced from billet bearing steelA true center-line for...

These tappets will run in cast iron or aluminum tappet blocksRecommend fitting the tappets to the blocks with a clearance of .0007" to .0012"Produced from billet bearing steelA true center-line for...

These tappets will run in cast iron or aluminum tappet blocksRecommend fitting the tappets to the blocks with a clearance of .0007" to .0012"Produced from billet bearing steelA true center-line for...