UMA Racing Crankcase Breather/Bypass Plug - Yamaha/Honda/Universal
Bypass valves are used to relieve blowback pressure in engine crankcase area, especially useful for modified engines. These UMA racing ones are made from high quality CNC machined alloy for high strength and durability. For use with 10mm tubes.
Available with 45 or 90 Degree valve head for Honda/Yamaha.