Outfit your semi with Expertise Built In with reliable air brake performance, with the OTR 12.25" / 16.5" Full Brake Camshaft Repair Kit. Due to its multitude of components that tighten and seal the internal brake drum, this repair kit allows the camshaft to spread the brake shoes apart and slow a vehicle. Constructed with precisely-engineered accessories to defend against wear and provide long-term dependability. FleetPride is your First Click in Heavy Duty .