The drivetrain hasn't seen a really significant evolution since the advent of index shifting in the 1980's. IMHO. Well, maybe the brake/shift lever combo - but really, not since then. More gears, electronic movements but the things still basically attach and work the same as the old Nuevo Records that our dads rode, mechanically speaking. So I went to the SRAM Eagle XX premier party at Mellow Johnny's in ATX with a bit of skepticism - and curiosity. Dang. It's different! OK - two jocky wheels, and the slant parallelogram are still there - but the UDH (Universal Derailleur Hanger) is completely different, the adjustments are basically gone, the setup is easy - and super super strong! I talked with product developer Jason Blodgett about the evolution of bike transmission systems!

Please consider supporting B ...