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Chainring guard

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made for 53T, 130 mm BCD, 5 bolt, but model is easily modified for other parameters

Updated at source: Sep 21, 2026

Model information

based on Litepro 53T chainring with integrated chainring guard
integrated spacer of 1.5 mm, plus an ordinary chainring stacks to about 5 mm spacing between the closest wall of the guard & the outboard face of the chainring
- this, plus my presumed 39 mm chainline meant that I wouldn't get rub in either extreme of a 10 speed cassette on the chainring guard features, on either side with the chain at a diagonal
  - this also coincides with the chain not derailing off the chainring (this naturally gets worse as the chainring wears)
tested fit with this chainring adapter

don't bother printing R2 because you'll have a hard time fitting bolt to nut – it just barely works
- R3 has a 2 mm deeper CBORE, which should greatly help with this
- I didn't measure my chainring bolts & nuts, but I suspect they're the size for a typical road/mountain double ring setup

better visualization added of common, perhaps even standard chainring bolts
the CBORE depth is tied to these dimensions to avoid fitment issues encountered in R2

model adjusted for this strange 13.3 mm threaded length extra long chainring bolts I found