lowering kit/ wideing kit

im not big on money will the wheel spacers hold up on jumps and which ones are better my buddy has a wicked track and alot off off road courses
 
thank you wifesblaster that is great was kind of scared to buy crap ones and wipe out bad which have already done wrapped around a tree in fourth gear
 
thank you wifesblaster that is great was kind of scared to buy crap ones and wipe out bad which have already done wrapped around a tree in fourth gear

That sucks. I run them on all my bikes. I do not jump that high though. Other members on here use them on mx tracks and get some air though. I have never seen or heard of them breaking. I think it's an affordable way to get a wider stance. I was really skeptical at first too. So far so good.