RD-M5100 Rear derailleur deore shadow+ 11-speed 51t maximum 1x11

Shimano's RD-M5100 Deore Shadow+ rear derailleur delivers precise 11-speed shifting for demanding trail riders. Designed specifically for 1x11 drivetrains with a long cage accommodating cassettes up to 51T, this derailleur combines Shimano's reliable Shadow+ technology for reduced chain slap with the durability and performance that Deore components are known for. Ideal for technical terrain where smooth, consistent shifting is essential.