I got the 22 tooth today and all I can say is wow! I am using a 22T 32P 5MM pinion on a Tekin Pro4 and RSX. It was really amazing seeing how fast it was going. I plan to race this weekend and feeling very confident.

I struggled with the steering being to fast and yanked the Futaba out, and put in a JR Z9000T servo in it.It is slow but feels great and now very predictable. I also was able to turn up the servo speed to 100% on the radio. Took the front shafts out, and sure enough the right side was bent. Took a hammer to it and good as new. A friend (Zach Noia)showed me how to move the rear camber linkage to the outside and readjust the camber. It was night and day in performance, way more stable.

To the outside? What exactly did you do to the rear link?

Here you go

This will add a a lot of stability to the rear end.

I use a 540 4600 Pro 4 motor and 22 works great for some reason. I had a 24 in there but it ran too hot and everything got to warm, plus it had no acceleration at all. The 22 seems to have the best going for it. The 21 had faster acceleration, but I want more top end. The 24 was a tight fit also, not good, but worth a try. I have to remover the bottom motor mount slider screw to install the pinion. I also had to do some dremel work to the motor mount to get to the pinion set screw.

Tell me about it. I don't remember anyone posting about this issue. I thought I was the only one.

You can fit a wrench into the pinion screw, at a certain angle. There is a notch. It is about from the Pan, up to the Pinion. Sometimes I put the pinion on, before I slide the motor bracket in.

Interesting. I went the opposite route by flipping the hubs and running the shortest link possible.

Try it, it works really well and fun to drive fast.

I'll test it but my times only went faster the short I went. Currently sitting 1st in our series race at our track with it, should have a good setup sheet in a few more races for indoor clay tracks.

Can someone please tell me the O.D. of the shock piston with a digital caliper? Please and thank you in advance.

For those wanting to use the SCT wheels and still have a wider stance like ST wheels provide then check out Exotek +3mm hexes. They also have a +2mm version.