SER-500352 Top-shaft set 21T stock SRX2500352 Top-shaft set 21T stock SRX2
500353 Top-shaft 21T stock SRX2

Serpent introduce for the Spyder SRX-2 series cars a special top-shaft set for use in the stock-class.
One as set with adaptor and one just the top-shaft .

Easton: The entire stock racing spur gear adapter, including nut, is only 9 grams.. I want to say the stock unit with pads,plates, screw, is well over 20grams.. So you can cut that rotating mass in half... Chances are you can go up a gear down the main straight and still have more low end power.. Granted, it will be a little harder on your ball differential, since there is no longer a slipper.. If your using a gear diff, you have nothing to worry about.. If your feeling frisky, or want to deliver a venomous bite to your competition, give them a try.