RockShox Deluxe Select MTB Rear ShockThis mountain bike (MTB) rear shock features a lightweight and highly tune-able Debonair air spring, which provides a coil-like consistent feel throughout its 55mm travel. Perfect for effortlessly soaking up even the smallest hits and tracking the slightest changes in the terrain, its air spring offers reliable performance wherever your trail riding adventure takes you. RockShox has also kitted out this model with external rebound adjustment, so you can easily fine-tune your rebound damping speed to match your riding style as well as the terrain conditions. Coming complete with Maxima Plush damping fluid that reduces friction and silences damper noise, this is an ideal choice of upgrade for smooth and consistent rear suspension performance.Features: Air Spring: Debonair Damper: External rebound adjustment Use: MTB Length: 210mm Travel: 55mm Max PSI: 325Technologies: Debonair: A lightweight, highly tune-able air spring designed to offer a coil-like consistent feel throughout the travel – effortlessly soaking up the smallest hits and tracking the slightest changes in the terrain. SAG Gradients: Measurement gradients indicating the current sag and travel settings are conveniently located on the upper tubes so that you always know how much travel you are running. You won’t find this anywhere else but RockShox. Maxima Plush Fluid: Developed with the world’s fastest racers, on the world’s toughest circuits. Maxima Plush Fluid is designed to protect from suspension wear, reduce friction, and silence damper noise while maintaining a consistent feel in all temperatures. MEGNEG: The MegNeg (aka Mega Negative) aftermarket air can provides better small bump compliance, reduces the amount of force it takes to get into your bike’s travel, and is harder to bottom out than the standard air can.Manufacturer’s Part Number: 5458-210 Black 210mm x 55mmBuy RockShox Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.