Motion Pro Push-Pull Throttle Perfect for smoothbore carburetor conversions on street and race bikes Designed to open up to 38mm carburetors Universal cables fit all bikes with Mikuni Smoothbore carbs (measures 39.5 long) Racing cables fit Yamaha FZR1000 91-92 with Keihin CR carbs Die-cast aluminum housing with high-grade steel Allen-head bolts, available with chrome or black epoxy finish