TC Bros 7/8 Single Cable Throttle Tube Assembly Honda / Yamaha TC Bros. 7/8 throttles are the perfect solution for eliminating the bulky throttle/switch housings on your vintage Honda or Yamaha motorcycle. The minimalist design features an investment cast aluminum housing with classic good looks. Features: Billet aluminum throttle tube CNC machined with a knurled finish to accept a huge variety of aftermarket rubber grips Available in polished aluminum or black finishes