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05-16-25 | 12:35 PM

#3

maddog34

Senior Member

Joined: Jul 2015

Posts: 7,413

Likes: 3,253

From: NW Oregon

Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike

watch out for Chain ring hitting the chain stay of the frame....

Chain rings up to 52t can be found for 104BCD on Ebay... my Sirrus gravel bike has a Shimano 48-36-26t triple on it, 104BCD...
Origin8 has a wide selection of short crank arms and configurations. I'd up the length in advance of his pending growth surge...

https://origin8.bike/

Last edited by maddog34; 05-16-25 at 12:55 PM.

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