WE TWEAKED THE DESIGN OF OUR UBER POPULAR "DNA" SPIDER AND MADE IT STRONGER, STIFFER AND BETTER LOOKS AND FUNCTION. THE OLD DESIGN HAD RELIEF CUTS ON THE FRONT SIDE, NEVER USED.  WE ELIMINTAED THE CUTS AND MADE A SLEEKER FLUSH MOUNT SYSTEM THAT MAKES FOR A PERFECT CHAINLINE. 
 
THE PRO DRIVE 104 DRIVETRAIN SYSTEM COMES WITH:
 
NEW 2025 DNA SPIDER 104 BCD 19MM ID MOUNTING
NEW BULLSEYE PRO DRIVE CHAINRING 8MM THICK AND TRUE AS EVER.
NEW BULLSEYE CHAINRING BOLTS FROM HARDENED 7075 ALLLOY
 
ONE OF THE ELITE COMBOS YOU CAN RUN ON YOUR WHIP. COMPARE ANY OTHER SPROCKET
AND SPIDER COMBOS ON EARTH. NOTHING IS EVEN CLOSE. IF YOU WANT THE BEST, BUY THE BEST,
 
100% DESIGNED AND MANUFACTURED IN TEMPE ARIZONA USA.