How to Bleed Disk Brakes on a Mountain Bike for Optimal Performance
To bleed disk brakes on a mountain bike, you’ll need a syringe and a bleeding kit. Fill the syringe with brake fluid and attach it to the bleeder valve on the brake caliper. Loosen the bleeder valve and push the brake lever to force new fluid into the system and push out any air bubbles. Repeat this process until all air bubbles are removed and the brake lever feels firm. Finally, tighten the bleeder valve and wipe away any excess fluid.