Shimano Altus MTB Rear Derailleur RD-M310 7–8 Speed 3x7 3x8 Bicycle Bike Derailleur

The Shimano Altus RD M310 is a reliable and budget friendly rear derailleur designed for 7 and 8 speed MTB drivetrains. Featuring a Smart Cage long cage design with oversized 13 and 15 tooth pulleys, it delivers quieter operation, reduced wear, and smoother, more precise shifting. With a wide link construction for added stiffness and durability, it supports up to a 34T cassette and offers a generous 43 tooth total capacity, making it ideal for everyday trail riding and commuting.