Frame has been ergonomically engineered to promote contact with the helmet during impact – including rear support edge that fits closer to the body and raised chest to avoid hyper-flexion injuries - thus providing a solid surface which instantly channels damaging

so will sit around the knee if not a touch lower

depth information

Spindle seal x 2

E-Thirteen Helix R Guidering Direct Mount Chainring - E-Thirteen Direct Mount - 32T - 52-55mm Flip - Round - 12-Speed - Eggplant Alloy PLP|Largest Cog Frame has been ergonomically engineeredAccording to E*Thirteen, the Helix R Direct Mount Chainring is a game changer. With proven Sram and Shimano 11 or 12 speed cross compatibility applied to an ultra lightweight, durable AL 7075 t6 Chainring and a highly CNCD technical finish. Combine with the chain, derailleur shifter of choice without a change in chain retention quality. Build a dream rig with more freedom and spec creatively. One of the strongest and most durable alloys available, AL