Folding Clutch Lever with Perch for 50cc - 125cc Dirt Pit Bike Handlebars Ensure you of a perfect lever position and improve the performance of your Pitbike. The perch adjuster is designed for final assembly with an outside diameter of 8 mm. Easy mounting on all 22mm diameter handlebars. Made of anodized aluminum to improve stability and durability. Box contents: 1 clutch lever with perch. Specifications Material: Aluminum Color: Black ID: 8mm ID handlebar diameter: 22 mm Compatibility: For 50cc - 125cc Dirt Pit Bike with 22mm diameter handlebar.