YT Jeffsy Bike Chain Guide
thingiverse
This upper chain guide fits perfectly on a first-generation YT Jeffsy 27.5 frame (pre-2019 models). While I'm unsure if it will work on the 29" version of second-generation frames (2019+), it's worth a try. To install, simply bolt it up to the E-type front derailleur holes. I designed this chain guide with a 28t chain ring in mind, but it should clear at least a 30t or possibly even a 32t ring. If you need to accommodate a larger ring, consider adjusting the model or scaling it slightly. The design is an original creation, inspired by similar models but entirely reimagined from scratch. It's been printed with SLS nylon, but FFF could also work well for this design.
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