hi, do vintage mx bikes have power valves like a modern mx bike?
Nevada Sixx Member May 3, 2001 #1 Joined Jan 14, 2000 Messages 1,033 Likes 0 May 3, 2001 #1 hi, do vintage mx bikes have power valves like a modern mx bike?
Sawblade Timmy Timmy Timmy! May 6, 2001 #3 Joined Sep 24, 2000 Messages 1,491 Likes 0 May 6, 2001 #3 Yamaha was the first to have a powervalve on a production bike. 1982 was the year.
