Experience rear suspension performance with the RockShox SIDLuxe Ultimate Rear Shock - engineered for XC racers and trail riders seeking lightweight durability, exceptional adjustability, and optimized climbing and descending efficiency. Designed for 190 x 40 mm frames, this high-performance shock features advanced engineering and innovative technology to elevate your ride. Materials & Construction: Built with , lightweight aluminum components, the RockShox SIDLuxe Ultimate maximizes strength-to-weight ratio. Its durable anodized finish ensures longevity and resistance to harsh trail conditions, making it ideal for aggressive riding environments. Performance & Engineering: The SIDLuxe Ultimate offers unmatched damping precision with its adjustable Rebound and Lockout Threshold, allowing riders to fine-tune the suspension for climbing efficiency or downhill control. The 2-Position damper features a rock-solid Lock mode and an open setting for maximum traction and control on variable terrains. Its SoloAir positive spring mechanism ensures responsive, consistent support with minimal weight. Components & Technology: Equipped with a 2P damper system sporting high-speed compression blow-off for a smooth Open position, this shock maintains optimal performance during rapid impacts. Compatibility with TwistLoc and OneLoc remote lockout (sold separately) provides seamless integration with control systems, enhancing riding versatility. The external rebound damping adjustment offers quick, precise tuning to match trail conditions. Style & Use Case: Designed for cross-country, trail, and marathon riders, the SIDLuxe Ultimate's sleek, lightweight profile enhances bike handling without adding unnecessary bulk. Its external adjustments enable riders to adapt quickly to changing trail conditions, making it ideal for aggressive climbs and high-speed descents. This shock complements the feel and performance of full-suspension bikes equipped with SID and SID SL for