Introducing the OChain | E, a revolutionary active spider that transforms your riding experience and elevates your e-bike's performance. OChain enables the chainring to rotate backward, effectively disconnecting the transmission from the suspension. The result? A smoother, more efficient ride that enhances your biking adventures. Chainring bolts sold separately TECH INFO Customizable Setup: OChain will come with a 9 degrees set up, with the possibility to switch between 4°, 6°, 9° and 12° setups, buying the dedicated Elastomer kit, tailoring your ride to your preferences. Chainrings Compatibility: BCD 104 mm chainrings from 30T ( NOT INCLUDED) Chainring Offset: +3mm virtual chainring offset (add +3mm or +4,5mm, with the OChain adjust kit) Sleek Finish: Black or Silver hard anodization Material: Crafted from high-quality Alloy 7075 T6 Weight: 140 grams (depending on the version) Dimensions: 93 mm x 93 mm x 13 mm Weight Limit: Rider and bike max 120kg COMPATIBILITY OChain is a active spider made for the direct mount cranks OChain can not guarantee the compatibility with all the chainguide on the market OChain chainring with OChain nuts is the only chainring guaranteed to be compatible OChain can not guarantee the compatibility with all the E-bikes on the market. OChain is not compatible with Turbolevo gen4 OChain | E Bosch is compatible with Bosch gen5 BDU38. Spacers are included in the box to match the original chainline just for the OChain | E bosch Chainring bolts sold separately OChain E Active EP8 Crank Spider UPC: 739988404035 MPN: EPSH52