Review on 🔄 SRAM Unisex Spare Disc Brake Service Lever Internals Gen 2 Guide R/Re/Db5/Code R - Qty 1 Service & Spare Part, Black, One Size by Rodney Nelson

The piston (white item in the picture) had a documented poor first run. They tended to swell and get stuck in the brake housing. My two refused, but not at the same time. Replacement isn't too difficult, except that you can't remove the snap ring with the specially purchased snap ring pliers since the snap ring is internal to the brake housing. curved pick tool and put back the replacement part from the kit as the original got a bit damaged when removing it. You'll also need a bleed kit, which costs another $50. The remaining parts were not needed.