2021 RockShox SID SL Ultimate BRAIN DebonAir 29" 100mm 15x110 Boost 1.5 Tapered 44mm Gloss Black Fork
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.
*This is the exact fork that Specialized will be using on the new S-Works Epic and Epic Hardtail.*
Follow on from previous review: Have ridden the Specialized Brain suspension for 14 years dating back to the Fox Terralogic in '03/'04 I crossed over to RS Sid Brain in 2012. The 2011-2018 forks were great. In 2019 the fork's small bump sensitivity changed (IMO for the worst). I owned a 2019 Sid brain which came standard on my S Epic which was TERRIBLE and a big deterioration from the earlier forks, really ruined my bike's handling; much noisier, lack of lock out and in general a big disappointment. I was in the checkout page on a Fox 32 when I found Pro Bikes offering of the 2021 Brain and decided to give them a try. Living in the UK I was unable to source the new 2021 RS SID Brain SL in the secondary market so I purchased from Pro Bike Supply US. What a pleasure, the purchase was seamless efficient and shipped quickly. Even after having to pay 20% import duty the total cost of the fork was less than most competitor forks sourced locally (Fox 32 as an eg.) Having ridden the new fork for 2 months now, I can honestly say it is the best suspension fork (cross country/ marathon race specific) I have ever ridden. The inertia-valve lock out is PERFECT, smooth transition to firming up, small bump sensitivity is spot on and just enough whilst the plushness of the fork is second to none. I think a lot of this has to do with the new Maxima oil the for is built with. It is superb. Thanks Pro Bike for solving a problem that has enhanced my riding endlessly.
Brilliant fork from RS, unavailable aftermarket in the UK. Pro Bike shipped quickly and efficiently product arrived as described brand new and in original packing.
I really can recommend this store to everyone around the world!