XC racers!- drop that chain at any time and how many positions are you going to lose?  Our test riders won the California 2003 Amateur cup championship and the 2003 state championship in the 35-39 and 40-44 expert class..

Black Diamond (Free riders) - you're flying through a rock garden and you come up to a ledge. You pick your line and mash on the pedals for a wheelie drop and there's nothing there. Endo!

If you like running a 2 or 3 ring setup so you can get "out there", but have a problem dropping your chain just when you need it most.

Check out AJ's Frame Guard.  It's simple and it works! Made in the U.S.A

aj's bike parts   chain guide   mountain bike   frameguard

 The Skinny on AJ's FrameGuard

  • Prevents chain drop (over shifting of granny gear)

  • Guards BB shell from chain damage

  • CNC machined 6061 T6   wt. 52 grams

  • XC racer / Black Diamond Tested Tough

Disclaimer - this part not for use with E-type derailer