Shaft Mounted Roller Rocker Arms for GX390 - 1.2 Ratio
- Super strong, economical alternative to the aluminum rollers
- Fits GX340/390s and non-Hemi 13/15hp "Clones". Will not fit 240/270s.
*May need to modify valve cover bolt boss for clearance during assembly. Arms require shorter pushrods (typically 5.160 or 5.110, depending on camshaft and head milling).