RockShox Specialized SID SL Ultimate BRAIN, Gloss Black/Polar Grey Foil, 100X44M. The RockShox SID SL Ultimate BRAIN incorporates a race-tuned Brain Inertia Valve with Position-Sensitive technology into the all-new RockShox SID SL chassis. New Position-Sensitive Brain technology provides more platform support while maintaining small bump compliance and chassis balance, making this the most efficient BRAIN yet. Position-Sensitive technology allows riders to sag into the fork 15mm for a balanced ride, providing supple small bump compliance and a firm pedaling platform without the need for a remote lockout or levers to flip. All new SID SL Ultimate Chassis features a machined alloy crown to shed even more weight while increasing stiffness.New Position-Sensitive tune provides an increase in platform support. New SID SL Ultimate chassis features increased stiffness, lighter weight, and reduced friction. Torque cap compatible for stiff dropout/hub interface. 100mm travel, 44mm offset, 110mmx15mm hub spacing. The item "RockShox Specialized SID SL Ultimate BRAIN, Gloss Black/Polar Grey Foil, 100X44M" is in sale since Monday, December 27, 2021. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Forks". The seller is "witr_7540" and is located in Decatur, Georgia. This item can be shipped to United States.