The Lowdown: RockShox RS-1 suspension fork
It's expensive, proprietary, and hard to mount a front wheel onto, but based purely on performance, no other XC-oriented fork I've ridden can match the RockShox RS-1. Featuring an inverted design and new Accelerator Damper, the RS-1 is exceptionally sensitive and active, swallowing up bumps that other suspension forks don't even bother with, and its steering precision is as sharp and immediate as any rigid carbon fork. But is the performance gain of the RS-1 over a traditional fork worth the $2,000-plus price of admission? Only your wallet knows for sure.