I put an aftermarket throttle tube on an F4i racebike that converted it to a 1/5 turn throttle. The racer crashed and the tube was damaged and needs to be replaced. I originally got the tube in an ebay auction for a bunch of various parts. The tube is black in color and if you measure the width of the raised section of the tube it is approximately 7.35 mm wide from the inner part where the tube slides onto the clip on to the outer edge of the tube where the cables lie. I emailed Motion Pro and they said they could not help me. Does anyone know where I can get another one of these throttle tubes?
or try RC51 I have seen people put RC51 setups on all honda just throttle not all of that other switch crap. Not sure if the throw is any different. I have a 51 tube @ home I will measure tonight.
The RC-51 tube should be 4.5 mm. HRC doesn't list anything for the F4i. They do have something for the 1000 RR. I do not know about the RC-51 though.
