Xt power meter bodge?

Hi folks,
I’ve recently purchased a used left arm xt m8000 power meter (4iiii) for my new Vitus Rapide fs crx which has xt m8100 chainset.

I assumed the crank would fit the same as the oem crank. This is where I’ve gone wrong! The newer m8100 crank is much slimmer at the bb.

The gap between the spindle and the end on the m8000 pm crank is so big the ‘arm fixing bolt’ wont reach the thread on the spindle.

Now I’ve tried using a much longer road ‘arm fixing bolt’ and the crank has been tightened up just fine. The safety tab even fits in the guide hole.

My question is, is this safe to ride or will this less than perfect fitting cause premature wear or even damage to the cranks?

Any advice or insight would be appreciated. Please help!

As you can see fr

Bite the bullet and take it to a shop and get a mechanic to take a look at it. It’s hard to see what’s going on from those pictures. If the crank isn’t on the spindle correctly the pinch bolts won’t be able to be properly torqued.

I’d say get the correct crank. There doesn’t appear to be adequate purchase on the spindle, if the plastic tab doesn’t fall into the spindle hole that’s also an indicator that it won’t play correctly.

Thanks guys. I think I’m going to go with my gut here, it doesnt look secure to me either. And even if a mechanic says it’ll ‘probably’ be fine it’s not great peace of mind for such a crucial component.

Think I’m best just waiting and getting the correct one. The seller has very kindly agreed to let me return it for a refund.

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