I have dainty wrists. I’ve been using carbon bars for about 20 years with no failures. I’m a big boy and all my alloy rear 29er wheels detension after about 3 months. I’ve cracked carbon, but no catastrophic failures.Rims and handlebars are the other places where I wouldn't touch carbon with a flagpole, they're simply not worth it safety wise.
Spending a fortune to save a few grams in a component that won't tolerate forces for which it wasn't designed (impacts, mainly) on a mountain bike, seems like a joke to me.
My current mountain bike is one year old. I have not fallen even once with it, however, cranks already have some impacts from hitting rocks when climbing technical sections, and from flying rocks sent by the front wheel. The frame and rims also have a few impacts from gravel and rocks thrown by the tires.
I'd be comfortable on a carbon road bike, but not on a MTB. In any case, I still think it's not worth it even on the road.
My endurance road bike cost me 1099€. The only carbon parts it has are the fork and seatpost, and it weights 8.5kg even with hydraulic disc brakes. Meanwhile, a Canyon Endurace CF SL Disc 7.0 weights 8.39kg and costs 2099€ while being similarly equipped (105 vs Rival, DT Swiss E 1850 vs Mavic Ksyriums). Almost double the price. It's just a scam.
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