SRAM X01 104 BCD GXP spacing spider
SRAM GX 104 BCD boost spacing spider
SRAM X01 104 BCD boost spacing spider
SRAM GX 104 BCD GXP spacing spider
SRAM X01 104 BCD BB30 spacing spider
SRAM GX 104 BCD BB30 spacing spider

1x 104 BCD Spider for SRAM Cranks

Regular price $80.00

Run smaller chainrings on your SRAM and Truvativ cranks with the NSB 1× 104 BCD Spider. It replaces the stock chainring spider so that you can run smaller rings on XX1, X01, X1, X0, X9, S2210, GX, and S1400 cranks.

They are designed to use any standard 104 BCD 9, 10, 11, or 12-speed chainring. There are no mounting holes for the granny ring, and the single ring’s position has been moved to give a better chainline throughout the entire gear range. The outside tabs accept any standard bash ring for DH or aggressive All Mountain bike applications.

The 104 BCD Boost spiders convert GXP cranks to Boost Compatible Frames.


  • Chainline
    • 50mm for GXP and BB30
    • 52mm for Boost
  • Weight: 65 grams
  • Machined from solid 6061 Aluminum
  • Anodized Black with Laser Etched Graphics
    Customer Reviews
    4.3 Based on 3 Reviews
    5 ★
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    A North Shore Billet Customer
    leslie d.
    Australia Australia
    I recommend this product

    Surface finish could have been better. Are you making the final machining cuts too deep perhaps?


    North Shore Billet

    Hi, Leslie. Thanks for the review and you’re keen eye. We’d like to clarify some things: 1) the spiders are made using 6061-T6 material. Our stems are also made from this. 2) We don’t put the spiders through the rigorous polishing process as we do with stems, chainrings and other parts. Not all parts are polished after machining, and given the spider’s position on the bike and use, we opt not to add the extra step to the manufacturing process.

    Norberto B.
    United States United States
    I recommend this product

    Spider for SRAM Crank

    Had a question before the purchase and Chris was quick to reply. Item was shipped out the same day with tracking updates and arrived as scheduled. Also, the quality and workmanship of the product is top shelf. It is how online shopping should be, overall excellent experience.


    North Shore Billet

    Thanks for the kind words, Norberto.

    Rick R.
    United States United States
    I recommend this product

    Spider 1x104 BCD - GXP, SRAM XO1 Single speed build

    Great!!! Chris was awesome and answered all my questions. I needed the right spider for my new crank to run Gates belt drive single speed. It fit great and to the exact factory measurement of 52mm chainline with the XO1 crankset. NSB is an awesome company and take pride in customer service.