Shimano Altus SL-M315 8 Speed Rapidfire ShiftersEngineered for intense MTB rides, these shifters offer smooth and reliable shifting operation on mixed terrain conditions. They feature a slim main lever body with an optical gear display that’s positioned below your handlebar. This means you’ll be able to view which gear position you’ve selected while riding your mountain bike. 8 Speed MTB Shifters with Rapidfire PlusDeveloped for light shifting operation, these trail-ready MTB shifters are kitted out with Rapidfire Plus technology. A winning choice for a wide range of riders from XC racers to freeriders, this technology is specifically suited for quick shifting. As a result, you’ll benefit by being able to downshift three gears in one stroke and keep your momentum flowing across the mountain bike trails.Weather-Resistant MTB ShiftersPrepared for all-weather conditions, Shimano has equipped these shifters with Optislick cables which feature an electrically coated outer layer. This means you won’t have to worry about damaging them in wet conditions. Whether you’re riding with your friends after work or competing in an event, the Shimano Altus SL-M315 8 Speed Rapidfire Shifters are designed for maximum performance. Features:Use: BMXSpeed: Front Option: 3 speed; Rear Option: 8 speedOptical Gear Display: YesPair or Single: SingleShifter Type: Rapidfire PlusTechnologies:Optislick: Optislick cables feature a minimal and uniform electrically coated layer that improves cable routing efficiency and provides excellent corrosion resistance.Optical Gear Display: The optical gear display tells you which gear position is selected while riding your bike. You can see how many gears you can select either on the low side or top side, which makes shifting control easier.Rapidfire Plus: Mountain bikers have used RAPIDFIRE PLUS since 1985. RAPIDFIRE PLUS is still a winning choice from a wide range of riders from XC racers to freeriders. RAPIDFIRE PLUS is suited to quick shifting, giving riders the ability to downshift three gears in one stroke. RAPIDFIRE PLUS shifters from DEORE to XTR all feature 2WAY-RELEASE, which means release shifts by pull of the index finger or push of the thumb.Manufacturer Part Numbers:Front 3 speed: SLM315LRear 8 Speed: SLM3158R A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.