UPGRADE YOUR MOUNTAIN BIKE WITH THE SHIMANO RAPIDFIRE PLUS MOUNTAIN BIKE SL-M310 8-SPEED SHIFTER (RIGHT).Adjust your speed to the demands of the ride. Rapidly shift between 8 speeds on your bike's rear cassette with the smooth shifting Shimano Rapidfire Plus Mountain Bike SL-M310 8-Speed Shifter. Compatible with most mountain/hybrid bike styles with flat handle bars, the shifter offers an ergonomic design and an indexed speed indicator for ease of use. FEATURESWide Optical Gear DisplaySmooth an light action shifting performanceIncludes cables and housingRD/Shifter Compatibility: 8-Speed