Biggest chain ring - SRAM Eagle AXS rear derailleur?

Discuss light weight issues concerning mountain bikes & parts.

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MartinCzernik
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Joined: Tue Nov 27, 2018 3:08 pm
Location: Lidingö
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by MartinCzernik

Does anybody have any info on how big front ring I could run on a SRAM Eagle AXS rear derailleur with the 10-50T cassette?

SRAM has a 38T on the site, AbsoluteBlack go all the way to 48T....
Martin Czernik
Stockholm Sweden

2019 Litespeed Gravel eTap AXS
2018 TREK Top Fuel 9.8 SL AXS
2017 S-Works Stumpjumper FSR AXS

by Weenie


mattr
Posts: 4673
Joined: Fri May 25, 2007 6:43 pm
Location: The Grim North.

by mattr

As big as you want. The rear mech/cassette won't be able to tell anyway.

Just need to make sure your chain is the right length.

1llum4
Posts: 88
Joined: Thu Jul 12, 2018 6:00 am

by 1llum4

The limit won't be the chainring maker, the derailleur setup but the chainstay space for the chainring. A 40T chainring on most all-mountain/enduro/trail bike frame will rub on the drivetrain chainstay. Some cross-country frame might accept bigger than a 36T but it is a case by case depending on the frame you have.

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