I have a 97 rock hopper that came with a 50mm fork. A couple of years ago I u
Graded to a marlzoochi ms pro, a 100mm fork. The geometry changed but was still very rideable. Ymmv. I'm not the most aggressive rider so I don't think I was stressing the head tube.
If you have a recent bike with 50mm travel fork, I suspect it' maybe a department store special, in that case I would not try the upgrade but instead save for a quality rig instead.
It would cause handling issues as well as stress the frame in ways it is not designed for, most likely causing it to crack and eventually fail completely. Bikepedia shows your bike costing 250 bucks brand new, So I would save your money and get an entry level mountain bike that comes stock with a 100mm fork and a frame and components that are made more for off road riding.
Even if your bike frame does not crack, break, or otherwise self destruct from too much fork up front, you'd still be wasting money on upgrading a bargain bicycle. It's a vicious cycle - you start with a fork, and you'll end up upgrading every other component. Trust me, and pretty much everyone else this forum, when we say just buy a new bike.
Just not worth doing as everyone else has already said. You're trying to make this bike into something it was never meant to be. Always easier to get something a little burlier and overengineered (as long as the budget allows) then you currently need than throw hard-earned coin at a cheap ride with a noodle fork.
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