Advantages TDR Pulley Assy: - Pulley Assy design with special angle improved rotation of belt - Made with high quality material makes roller easy to move and increase acceleration Advantages of TDR CVT Sport Clutch Set: - Weight Clutch using high quality friction lining material producing maximum friction at Clutch Housing (Clutch Bell) that will increase acceleration. - Clutch Housing design with hole to easy release heat and more durable. - PNP (Plug and Play). - Suitable for daily use and modification.