Pro Circuit Billet Throttle Tube - TTR110 Bore Kits - 18T/67T Primary gears that

- 18T/67T Primary gears that make first gear more useful than stock gears (some other kits do not include this nice option)

- All aluminum ceramic plated 64mm cylinder with skirt- NEW We increased the skirt height and size on the lightweight high compression 64mm piston with rings

All ATC TRX CL SL & XL 70's

KX80/85 88-04

Pro Circuit Billet Throttle Tube - TTR110 Bore Kits - 18T/67T Primary gears thatFits The Following Bikes: ALL Yamaha TTR110's 1 4 Turn (90 degrees) Throttle Tube Description: Pro Circuit throttle tubes are CNC machined out of aluminum, and are Teflon coated on the inside to reduce friction which gives you a smoother twist of the throttle.