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.
