FEATURES
- rocker arm CNC machined from 7000 series alloy
- low rotational inertia due to lightweight arm design
- bearing grade bronze bushings reduce rotational friction
- precision ground and hardened alloy steel roller tip provides ultra smooth rotation
- precision ground and hardened alloy steel rocker shaft design eliminates valve train deflection
- 5/16" tool steel cupped lash adjusters with ARP 12 point nut

These billet aluminum roller rocker arms will fit Honda GX340/GX390 or Clone 340 / 390!
These have a rocker ratio of 1.3:1 (1mm more valve lift).

NOTE: for the roller rocker arms assembly, the valve cover spacer number 1677 is required!
This spacer will give the roller rockers enough room to clear when installed on a Honda GX340 / GX390 or clone engine.