Help!!! Noisy Wahoo V5 with SRAM rival 12spd cassette

Hi everyone,

I’m hoping for some support or advice on a new trainer setup that is driving me crazy.

The Equipment:

• Bike: Trek Emonda SL6 (SRAM Rival AXS 12-speed)

• Trainer: Wahoo Kickr v5

• Freehub: Wahoo XDR Freehub body (new install)

• Cassette: Brand new SRAM Rival XG-1250 (10-36t) – same size as my outdoor wheel.

The Issue:

My bike shifts perfectly and runs silently on the road. However, as soon as I mount it to the Kickr, the alignment feels completely off.

• There is a constant, loud rumbling/rubbing noise when pedaling forward (it sounds mechanical/metal-on-metal).

• It struggles to shift cleanly through the gears.

• When backpedaling, it is almost completely silent, so the trainer internals seem fine.

What I have already checked/tried:

• Micro-Adjust: I spent ages in the SRAM AXS app trying to trim the gears. While some settings change the pitch, the grinding never goes away.

• Chain: My chain shows zero wear (measured exactly 12”). Routing through the derailleur cage is correct (under the tab).

• Lubrication: Chain is freshly lubed.

Has anyone experienced this specific issue with Rival AXS and the Kickr v5? It feels like a physical spacing issue rather than just a derailleur trim problem.

I have attached a video of the noise. If it would be helpful for me to share any additional photos or videos please let me know!