Shaft Mounted 1:1 Ratio Rocker Arms for GX390, 420 OHV, and 460cc
- These are the famous "Champion" HD shaft rockers for GX390 and 420 OHV engines. They are arguably the best bang for your buck when it comes to valve train stability.
- A shaft rocker eliminates the need for a guide plate and prevents the rocker arms from walking side to side. Further, they have considerably more rigidity than stud rockers, so they rarely need adjustment once set.
- Studs and nuts included (Studs may require tools to install = to tight to turn by hand)
- Fits GX390 and 420 OHV engines. Will not fit GX270s.
