The Knuckle Box, or bell crank, is the core of our single-pivot four-bar suspension
platform. Optimally placed pivots equate to a low leverage ratio, and ultimately
to superior pedaling efficiency and small-bump compliance.
Placing the Knuckle Box low within the frame, situates the greatest weight of the
bike closer to the bottom bracket, which lowers the bike’s center of gravity and
allows it to better track and corner. Wheel-rate is one of the most significant
aspects of a suspension design.
Wheel-rate is the effective spring-rate when measured at the wheel. A benefit of
our four-bar linkage is increased control over the wheel-rate. Obtaining the spring-rate
curves in shocks from Fox is necessary to allowing us to determine the wheel-rate.
Working closely with Fox, we’re able to optimize the wheel-rate to be linear-to-slightly
progressive. This results in superb small-bump compliance, more perceived travel
and excellent bottom-out protection.