This kit meets or exceeds OEM specifications. Rear Brake Master Cylinder Rebuild Kit for 5/8” bore master cylinder. Fits 2008+ Harley Street Glide, Electra Glide, Road Glide, Road King (Touring Models) Comes with Metal Plunger/Piston, Seals, Spring, Washer & Snap Ring. Replaces HD# 429320-08A