Take the 2-minute tour ×
Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It's 100% free, no registration required.

I recently had a low speed spill on my bike leaving the brake lever rather bent. Can I bend it back (roughly) straight or it is likely to just break? Given that it is cast aluminium, I suspect is will fracture and break.

Any experiences out there with this?

If it is doable, how sould it be done? Vice+rubber mallet? Vice+pliers? Anvil+hammer?

share|improve this question

3 Answers 3

up vote 4 down vote accepted

It is possible that it would break. However i think that buying a new one shouldnt be expensive and is the best solution.

share|improve this answer
Cost is about $120 and I only replaced it a few months ago when someone tipped my bike. I might experiment with the old one and see what happens. –  dave Apr 6 '11 at 17:47
+1 on replacing the lever, even with the expense. Aluminum fatigues with even the slightest bending. I would not trust a severely bent lever for such an important task. Disclaimer: I am not a metallurgist. –  William Cline Apr 6 '11 at 21:39
@dave $120 for the lever alone?! Or including labor? You didn't mention the make and model of your bike, but I'm having a hard time finding anything in that price range. –  jensgram Apr 7 '11 at 12:39
Triumph + Australian prices = $120 :-( That being said, I have not looked around at 3rd party options. –  dave Apr 9 '11 at 18:48
Almost certainly going to break while bending it back. –  Brian Knoblauch Jun 2 '11 at 17:30

Applying Murphy's Law, yes, it will break and, worst, it will break when you most need your brakes. rimshot

Seriously, think of what would happen - in a bad situation, you're going to squeeze that lever as hard as you can. A fatigued part is most likely to fail under stress and the consequences in this case would be literally fatal.

I would never drive my car with a suspect brake pedal. I think you're dealing with a parallel case. Please get it replaced.

share|improve this answer

Don't try bending slowly with pliers - I've experience with levers bent in racing tumbles to tell me that cast aluminum doesn't like that.

What has been suggested to me is heat, multiple swift whacks with a heavy mallet, and don't try to get it perfect - get it close to where it was. I've done one or two that way, but not been happy with the result.

In the end I've always used a replacement and kept the bent in the spares bin.

share|improve this answer
I've had just the opposite experience with bending slowly. I used vice grips to make a bending-pivot-point on the hand grip and length of pipe to go over the lever for leverage. From what I hear it was just luck as they usually snap. Also depends on how far they've been bent and the quality of the lever. +1 for replacement when in doubt. –  jabolotai Nov 29 '11 at 3:18

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.