Tuned stiffness characteristics for optimum ride feel- 1K outer fabric has greater abrasion resistance and a unique aesthetic- Replaceable pedal thread insert- Foam core helps to absorb impacts and dampen vibrations- Proven self-extracting axle/arm interface, inherited from Evo cranks- 30mm oversized 7075 aluminum axle- Weight: from 422g (arms, axle and 34 tooth spiderless ring)