HomeProduct SPECIFICATIONSBlack 12-speed Black 12-speed ★ Expert Choice"Shop Black 12-speed products designed for performance, comfort and movement." Filter Showing all 2 results 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 Shimano Dura Ace Di2 R9250 12 Speed Rear Derailleur £449.00 View Deal Cycling Shimano Dura Ace R9250 Di2 STI Levers £699.99 View Deal