E-Bike Chainring Spider for Bosch Gen 4 50mm
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The Ultimate E-bike chainring Spider designed for Bosch Gen 4 motors with 50mm chainline (non boost). Super light and durable design. The spider is only compatible with absoluteBLACK Super Steel chainrings. Spider comes with 5 titanium mounting bolts. Chainring sold separately.
How to choose the correct e-bike chainring assembly :
1. Choose your chainring spider – Depending on the mid-engine your e-bike uses, first choose the correct mounting interface (Shimano, Specialized, etc.) then, if required, choose the correct offset (Boost 53/52.5mm or non-Boost 50mm). Lastly, choose the colour of the spider and add it to the cart.
2. Choose Super Steel chainring’s tooth profile and size – Depending on the chain that your e-bike uses, choose between 10/11/12 speed or Shimano 12 speed HG+ versions. Lastly, choose the size of the chainring and add it to the cart
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Mass (+/-1g): |
32g |
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Color |
Black |
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Compatibility |
All Bosch Gen 4 motors with 50mm chainline. Compatible only with absoluteBLACK Super Steel chainrings (proprietary bcd) |
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Material |
cnc machined 7075 Txxx Aluminum |
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Finish |
type II anodizing |
How to assemble our Super Steel chainring with our e-bike spider
Please refer to the below diagram to correctly assemble both parts. Bolts should be tightened to 5-6Nm using Torx T-25 key.
How to mount absoluteBLACK e-bike spider to Bosch Gen 4 motor
For correct assembly of the spider to the motor please follow the instructions provided in the link below (Page 116 in the pdf)
Designed in UK. Manufactured in Poland (EU).