Flex-stay suspension uses a flexing frame element in the rear triangle instead of the pivot typically found near or at the rear axle. We’ve used this technique in several linkage-driven single pivot designs over the years; this design features seatstays shaped and tuned to flex along their length, making up the difference that a pivot normally would as the suspension moves.

Flex-stay makes for a lighter and simpler frame with fewer pivots to service; compared to our Split Pivot design, flex-stay sheds 48 grams of bearing and pivot hardware and can save additional weight in the rear triangle itself, depending on material and construction. The flex-stay design has pedaling and leverage rate characteristics similar to Split Pivot, but it sacrifices the ability to fine-tune suspension performance under braking to the same degree.