The new 240 MTB series featuring new EXP ratchet technology (rear only) The new 240 MTB series featuring new EXP ratchet technology (rear only) Newly redesigned press-fit end caps allow easy tool-free maintenance and conversion Contact free seals and high precision build guarantee smooth bearings Rear hubs feature 36T ratchet mechanism with 10? engagement angle for instant transfer Large surface contact area of ratchet provide improved durability and reliability