Yamaha Exhaust Valve Swingarm Guard 9 grade bolts are quenched

9 grade bolts are quenched and tempered to ensure durability

and crankshaft webs

Excellent traction off-road and good stability on dry and wet roads

NBR has excellent resistance to the ethanol used in today's fuels

Lightweight design that is more heat resistant than any OEM rotor

Yamaha Exhaust Valve Swingarm Guard 9 grade bolts are quenchedKibblewhite Black Diamond valves are CNC machined from one piece forgings of EV8 stainless steel, impregnated by a special German process to a depth of . 002 in. with a surface buildup of . 0002 in. This proprietary, multi stage process reduces friction and provides superior resistance to wear and corrosion over traditional chrome and nickel electrolysis plating processes. These valves go through an oxiding and polishing process that creates an