24-06-13, 04:38 PM
You can make your own out of some plastic plumbing pipe, done it on a few bikes.
Take off the throttle tube, and cut a piece of plastic pipe as wide as the cable track, trim it to size, glue it on, and voilla, roughly 1/4 turn throttle.
Take off the throttle tube, and cut a piece of plastic pipe as wide as the cable track, trim it to size, glue it on, and voilla, roughly 1/4 turn throttle.