Originally Posted by jhautz

No the kyosh spur doesnt fit the xray diffs. The screw hole locations are off and the OD of the diff cup iw way to small. It provides no allignment on the spur. I supposed you could get it to work somehow with some modification, but I wouldnt do it. Just run the steel spur. Its more durable that way anyway. Get it out on the track with the nitros and I guarnatee you wont even hear you gears. LOL