Detail
MRPs Bang Up To Date System 3 Chain Device. Using Lightweight Anti-friction Guides On The Alloy Back Boomerang Instead Of A Total Inner Plate And A Tough As You Like, 5mm Thick Alloy Outer Plate. System 3 Is MRP/s Most Versitile Design And Fits Most Mtb Frame Designs. 36-40t Sizing. 4 Bolt 104BCD C-ring Fixing. Lightweight Alloy Boomerang. BB, ISCG Or ISCG-05 Mounting