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Onyx 4 Bolt Chain Ring

4 Bolt Chain Ring from Onyx.  CNC Machined from the highest quality Aluminium with an anodized finish.  Available in a range of sizes and includes 5 Chain ring bolts.

Only Compatiable with Onyx chain ring bolts, which are included. 

  • CNC Machined Aluminium
  • Includes 5 Chain Ring Bolts
  • Fits 4 Bolt Cranks