Say you need some fast parts with speed and reliability engineered into them? Wirtz Racing parts include Wirtz Oversize Handlebar Clamps, Wirtz Aluminum Throttle Tubes, Wirtz WR5 Progressive Diameter Bar, Wirtz Adjustable Pro Clutch Perch, Wirtz Shorty Brake Levers, Wirtz Shorty Clutch Levers, Wirtz Grip Flex Brake Levers, Wirtz Grip Clutch Levers, Wirtz MX Shift Levers, Wirtz Clutch Perches, Wirtz Hole Shot, Wirzt Aluminum Gas Stop Valves, Wirtz Fuel Mixture Screws, Wirtz Rear Axle Adjuster Blocks, Wirtz Rotator Clamps and Wirtz Factory OEM stock replacement levers.