As we said earlier, we’ve been lucky enough to have three different bikes show up with SID forks in the last several months. Each bike had color matched decals on the fork which is a nice OEM touch we did not have to go searching for later. While these were short travel bikes, we took them on all our normal test tracks around the PNW and were quite impressed with their capabilities.
The first impression we took away from the SID was how rigid it is both laterally and fore-aft. We did not expect a 1,500g XC fork to be able to hold a line the way the SID does. While it is no replacement for 140mm of travel, it isn’t a lack of stiffness that will hold you back. Gone are the days of noodley forks that twist and bend at the mention of rock gardens, jumps or heavy braking into catch ruts.
If you had to have one option for travel on a cross country trail bike, 120mm is not a bad place to start. Especially when that travel is controlled by the new Race Day Damper. With two tokens installed, we were putting the SID down all but the rockiest of gardens and gapping our favorite jumps without issue. While we were impressed with the damper and control, there is a limit to what 120mm can do. To put it simply, the fork is bad ass and will allow you to charge 100-120mm terrain more aggressively, and it’ll even let you charge harder than your old 120 or even 130mm fork could handle, but if you need more travel, there’s no replacement for squish. When we took our XC bikes on aggressive trail bike trails, we found the limit, as expected. That limit was surprisingly different than we expected based on our experiences on earlier XC forks.
We had no major issues with either of our forks during testing and found they rode very consistent once set up. We tried Rockshox’s TrailHead app, which recommends initial setup and tuning and it had us pretty happy right out of the box.
If you are looking for a dedicated cross country mountain bike fork, the Rockshox SID ultimate offers huge amounts of control and stiffness in a lightweight package. From blasting up singletrack to jumps and rocks on the way down, the SID achieves a new level for the lineage of the fork. Throw a few tokens in and see what 120mm can do.