SPUTHE ROCKER BOX ASSEMBLY
Part #3300F Rocker Box with Standard Rocker Spindle Support
Part #3300G Rocker Box with Eccentric Rocker Spindle Support
Sputhe Engineering’s billet rocker boxes and covers for Evolution Big-Twins and Sportsters, CNC machined from solid 6061-T6 billet aluminum and show polished. An angled parting line and easy access counter-sunk hold down screws makes for easier, in-frame removal. One Neoprene O-ring replaces three leak-prone gaskets in the stock sets. These rocker boxes come with an improved air/oil separator PVC system for high performance 5-speed Sportster and 1993 and up Evo Big Twins. Sputhe rocker boxes are much more rigid than stock units. Can also be used to upgrade earlier engines to top end breathing.
Part #3315 Rocker Cover Gasket – Right
Part #3316 Rocker Cover Gasket – Left
Part #3318 Rocker Box “O” Ring
|Part #3303B Eccentric Rocker Spindle Assembly
Originally adapted from the XR-750 racing engine for use on the 60º Sputhe Spectre, our design has proven itself during 12 seasons of drag racing, road racing and street riding. Eccentric rocker spindles allow the use of lighter and stronger non-adjustable pushrods. A must for any engine with mechanical lifters. CNC machined and anodized billet aluminum rocker pedestals are clearanced for any cam lift and can be used with or without OEM Breather assemblies. Fits all Harley-Davidson TC rocker boxes. Sold in sets.
|Part #3303 Rocker Spindle Supports
The same strength and rigidity as our eccentric spindle supports except designed for conventional rocker spindles. Fits all Harley-Davidson TC rocker boxes. Sold in sets.
Rocker SpindlesInterchanges with H-D part #16622-83. Fits all TC’s Evolution Big Twins, Sportsters and Buells. 4340 chrome-moly case hardened to 62-64 Rockwell C. Set of 4.
Rocker Spindles for Eccentric Rocker Box
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Grass Valley CA 95945
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