Validating Derailleur Hanger Alignment Within 0.5mm Tolerance
Hanger alignment off by just 0.3mm can ruin precision shifting—discover why your derailleur isn’t tracking true and what critical step most riders skip.
B-Tension Screw Adjustment: SRAM & Shimano Di2 6mm Gap Guide
Use a 5mm hex key to set B-tension: 6mm gap for SRAM and Shimano Di2 12-speed (11-34T/11-36T) via the GG gauge. Fix chain slap and slow shifts now.
