Re: Shifter Kit from www.sickbikeparts.com
I believe it is either a 12-28 or a 12-30. You can shift pretty quick once you get the timing down. One thing that people should understand is that due to the multiple chains and freewheels there is a little slack in the drive. That allows the engine to free rev for a split second after a shift until the slack in the drive is taken up. If you are not gentle when reapplying the throttle it will jerk the rear cassette. To do it right is all a matter of how fast you shift and how little you get off the throttle for a shift and how quickly you get back on the throttle. I just barely crack the throttle, wait for the cassette to go from 1st to 3rd and then back on the throttle. Like you said it can be done pretty quickly once you get the timing down.