Exhaust valve “Black Diamond Kibblewhite” Honda XR500 XR600 XL600

Exhaust valve from KIbblewhite Honda XR500R ’83-’84 XR600R ’84-’00 XR650 L , NX650 , XL600 R / RM / LM GB500 clubman XBR500.

• Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel
• Lightweight, strong, one piece forging with profiles that provide excellent flow characteristics
• Valve is infused by a special German process to a depth of .002, with a surface build up of .0002 which improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating
• Each valve is designed using Finite Element Analysis (F.E.A) software, and profiles are tested on a computerized flow bench
• Stems are coated with black nitroneg
• Made in the USA