Rockshox Sid Ultimate4/25/2021
Theyre designed around 160mm (SID SL) and 180mm (SID) minimum front brake rotor sizes.And it does that without compromising stiffness or giving up features.
Rockshox Sid Ultimate Plus A NewOh, and theres (finally) a new 120mm SID Ultimate that can hold its own on modern lightweight trail bikes, plus a new SID Luxe rear shock thatll work for either setup.Even the damper is new, which is where most of the weight savings came from, so lets start there. The low speed compression circuit moved to the bottom, near the rebound circuit, and a non-adjustable high-speed compression circuit sits higher up. Its the same for the lever and remote versions, and they say it has the stiffest lockout to date. Why limit the user controls They say XC riding typically doesnt need as much fine tuning options, so they optimized the damping tune for the discipline and shed the extraneous options in favor of reduced weight. Because theres no middle setting, they could focus all of the tuning on a single open mode, letting them give it a softer, lighter tune thats more reliant on the spring rate than on physical damping. The smaller circumference of the thinner piston tubes mean less friction, too. The cartridges damping, valving and performance are functionally the same, but they are made differently. So, if you wanted to switch, youd have to replace the entire cartridge. ![]() To accomplish that, they notched the lower legs to fit around the brake caliper and give the hub and spokes a little breathing room. Rockshox says they were able to get to the weight and stiffness they wanted without carbon. Which means an easier-to-manufacture part thats also less expensive. The Ultimate models, shown here, get additional machining to shave more grams, then are anodized to a polished black finish. ![]() As soon as you put weight on the fork and get into your sagged position, the chambers are closed off from each other. Rockshox Sid Ultimate Full Use OfThe goal To make full use of the shorter travel by not wasting so much in sag. Dont feel bad. The Pike and Revelation are designed for longer travel and much more aggressive ridingyou wouldnt want the Race Day damper in them anyway. Drop the SL moniker and you gain bigger 35mm stanchions and more travel. So, if youre a bigger rider but only needwant 100mm travel, get the regular SID because the 35mm stanchions will offer more stiffness and strength. Or if youre building up a lightweight trail bike or like to get rowdy on your XC rig, get the 120mm version. Lets be real though, once you start riding 120mm, youre probably not going back to 100mm of travel on that bike. The forks also share the same design philosophy, with similarly machined alloy crowns and chiseled lowers, just a bit bigger and burlier.
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