chain rollers
 

Why the hell are they so expensive, and why is upper one blowing off when you drive loaded?
Any alternarive like hard bearinged ones like on enduro bikes?

Cheers

Matt

I found an orange hard plastic one with bearings in an off-road bike-shop in France. Works fine.

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Fred, XTZ660, Holland.

After it kept falling off through Egypt and Northern Sudan, I just removed the top chain roller, cutting off the spline which it sits on.
That was 20 000km ago and there has been no damage to anything.