HomeProduct MPNRD8139000 RD8139000 ★ Expert Choice"Shop RD8139000 products designed for performance, comfort and movement." Filter Showing the single result Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Random Sort by editor review Cycling SRAM XX1 Eagle 12 Speed Rear Derailleur £284.99 View Deal