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Ochain E Chainring Spider (B1)

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916218238000-OCHAIN-E-BOSCH-BDU38-OEMC-3Q
Ochain N and E Exploded View
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916218238000-OCHAIN-E-BOSCH-BDU38-OEMC-S.png?VersionId=D.o5DrIoO3 916218238000-OCHAIN-E-BOSCH-BDU38-OEMC-3Q Ochain N and E Exploded View.png?VersionId=pE7U0N8RbBXxOBObAYauRQIIZ9 Ochain Compatibility
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Ochain
Where To Buy
Free U.S. shipping on everything.
International shipping available. Some exclusions apply.
Free shipping on orders over $49 (continental U.S. only).
International shipping available. Some exclusions apply.
Free shipping on orders over $50 (continental U.S. only).
International shipping available. Some exclusions apply.

Specifications

Product
Ochain E Chainring Spider (B1)
Intended Use
E-Bike
Chainring Type
Other: Spider
Speeds
1x
Tooth Count
(Chainring sold separately – compatible SRAM chainrings with a 104 BCD are available in 32, 34, and 36 tooth options)
Hole Pattern
Bosch BDU38 (CX Gen 5) motor interface (part no: 00.6118.795.000)
Materials
Premium-grade aluminum
Colors
Black
Weight
 
Miscellaneous
  • Generation: B1 | Available: April 2026 | Model year designation: 2027
  • Model code: DS-OCHAIN-E-B1
  • For e-bikes, featuring an internally adjustable Travel Chip system
  • Re-engineered impact resistance and enhanced sealing for better contamination resistance and longevity
  • Internal Travel Chip system: 9° factory setting
  • Aftermarket Internal Travel Chip for 12° are available separately (6° travel chip not compatible with Ochain E)
  • 104mm BCD chainring compatibility only; chainring and hardware not included
  • Upgradeable to Ochain S using the Ochain External Travel Adjust Upgrade Kit (part number 11.6118.083.004)
  • Note: Upgrading Ochain E to Ochain S may affect compatibility with non-SRAM cranks due to the External Travel Adjust knob dimensions
  • Includes: spider
  • Elastomer replacement interval: 100 riding hours
  • Full service interval: 200 riding hours
  • Updated models are marked "B1" on the back; earlier models carry a numerical model code (01–05)
  • 2-year warranty
    • Price
    $285.00
    More Info

    Ochain is a 1x 104mm bolt-circle diameter (BCD) spider damper that replaces the current spider on the crank or a direct-mount chainring.

    Ochain allows the chainring to rotate rearward to disengage the transmission from the rider and chassis, improving the riding experience and bicycle performance by reducing noise and pedal feedback, allowing for greater chassis stability and fewer distractions.

    Ochain website

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    Where To Buy
    Free U.S. shipping on everything.
    International shipping available. Some exclusions apply.
    Free shipping on orders over $49 (continental U.S. only).
    International shipping available. Some exclusions apply.
    Free shipping on orders over $50 (continental U.S. only).
    International shipping available. Some exclusions apply.
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