Given the industry's latest trend toward all mountain everything, RockShox's Pike fork line has been getting a lot more attention than its XC oriented cousin, the SID. But when it comes to 29ers, forks like the SID RCT3 Solo Air 120 Fork prove that 4 12in of travel and 32mm stanchions are more than enough for serious speed on a chassis with enough rear travel that it occasionally crosses over into terrain that pure XC bikes would avoid. The Solo Air spring features an easy to tune design with a single Schrader valve that controls air adjustment for both chambers. The feel of the spring is customizable in a snap with RockShox's Bottomless Tokens that adjust the chamber volume to dial in the compression curve and meet individual ramp up preferences. While the Solo Air spring lets you adjust the fork for more trail oriented terrain, the Power Bulges on the lower bushings ensure the SID is always ready to do what 29ers do best: hammer. Power Bulge reduces deformation under load, so the fork tracks truer and puts more watts into the trail during climbs and locked out sprints. The damper leg features the Motion Control DNA damping system, which fights off gravity with external rebound to reduce jarring and provide a controlled, smooth ride across rocky trails. The Integrated Dual Flow technology boasts separate circuits for low and high speed compression as well as beginning and end stroke rebound damping for high riding sensitivity over consecutive bumps and larger impacts. Pairing all this with a Rapid Recovery valve that rebounds quickly after full impacts to prep for the next hit means you can rest assured that the ride will feel smooth and in control, no matter the terrain.