ROCKSHOX SID ULTIMATE 29 FORK B4WARP SPEEDSuspension has come a long way in the mountain biking world. From rigid forks to squishy forks to forks that are driven by science and years of testing. The RockShox SID Ultimate 29" Fork B4 is the world's most winningest XC fork. It is built for cross-country riders who strive for a spot on the podium. The SID comes with a new damper built for speed. The Charger 2 RLC damper has a 2-position lockout with a compression adjust. The 32mm chassis eliminates as much weight as possible, the DebonAir air spring offers a consistent feel throughout the travel, and Maxima Plush damping fluid reduces friction and silences damper noise. If you're looking for an excellent fork to help get you to the finish line faster, then you'll want the RockShox SID Ultimate.Features32mm chassis engineered to eliminate as much weight as possibleCharger 2 RLC Damper has a 2-position lockout with a compression adjustDebonAir air spring is highly tunable and offers a consistent feel throughout the travelSPECIFICATIONSTravel100mm, 120mmLockout2-Position, Remote (Optional)Axle Type15 x 110mm BoostSteer Tube Diameter1.5" TaperedStanchion Diameter32mmStanchion MaterialStraight Wall AluminumWheel Size29"Lower MaterialMagnesiumCrown MaterialForged, Hollow AluminumAxle To Crown Length531mmOffset51mmExternal AdjustmentsExternal Rebound, 2 Position Lockout, Compression AdjustInternal Adjustments-SpringDebonAirDamperCharge 2 RLCBrake CompatibilityPost Mount 160mmMax Rotor Size220mmIntended UseXC, TrailWeightTBD | RockShox SID Ultimate 29 Fork B4 Black, 120mm, 15X110mm, 51mm Offset, B4