How To Get Your 12-Speed SRAM Eagle MTB/Gravel Bike Onto a Smart Trainer

How To Get Your 12-Speed SRAM Eagle MTB/Gravel Bike Onto a Smart Trainer

All direct-drive smart trainers on the market today ship with a Shimano HG (hyperglide)-compatible freehub, because this meets the needs of many cyclists, especially roadies.

But what if you have a mountain or gravel bike using one of the increasingly popular 1x 12-speed SRAM Eagle groupsets? In that case, you have two options:

  • The more complex and expensive option: purchase an XD/XDR freehub body from your trainer manufacturer (here’s one for Wahoo KICKR, and here’s one for Tacx NEO), and install it. Then purchase and install a 12-speed cassette to mount on that new freehub body.
  • The simpler option: purchase and install a lower-spec cassette like the SRAM NX Eagle PG-1230 which can mount on your existing HG-compatible freehub. This lower-spec cassette is heavier than the high-end counterpart, but that doesn’t matter indoors. (It’s also worth noting that the smallest cog on the PG-12320 is 11 tooth instead of the 10-tooth of the higher-end cassettes, which may affect your ability to push hard in sprints or on descents in Zwift.)

Shane Miller, our favorite Zwifting Aussie, talks us through it:

Questions or Comments?

Are you running a 12-speed setup on your direct-drive trainer? How did you do it? Share below!

About The Author

Eric Schlange

Eric runs Zwift Insider in his spare time when he isn't on the bike or managing various business interests. He lives in Northern California with his beautiful wife, two kids and dog. Follow on Strava

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2 months ago

The problem with using a MTB on Zwift is the chainring size. You will spin out if you are not in ERG mode.

William Borglund
William Borglund
1 month ago
Reply to  Eric Schlange

Disappointing after they made such a fuss putting a MTB on display for their steering release a couple of years ago. MTBā€™s and CX bikes are basically u unusable on Zwift for everting but a workout.

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