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OneUp Components
Underbash Guard

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Why We Like The Underbash Guard

The OneUp Underbash Guard mounts to our mountain bike's ISCG-05 tabs and protects our chainring and bike frame from impact damage. It's designed for frames with a 2-bolt ISCG-05 mount such as Evil and Rocky Mountain. If your frame has a 3-bolt ISCG-05 mount, OneUp recommends contacting your frame manufacturer to see if it's compatible.


  • Mountain bike bash guard to protect chainrings and frames
  • Includes 3 different sizes of bash plate to fit 38 - 36t chainrings
  • Easy installation doesn't require crankset removal
  • Compatible with round and oval chainrings
  • Item #OUC001G
aluminum, glass-reinforced thermoplastic
Mount Type
ISCG 05 (2-bolt only)
Chainring Sizes
28 - 36t
Claimed Weight
2.4oz (68g)
downhill, enduro, trail