Are you looking to replace the nerf bars on your 300EX? There are a number of aftermarket and stock options available, but it can be hard to know exactly what will fit.

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This article will provide a walkthrough on how to determine which nerf bar options will work for your 300EX and what you need to do in order to mount them.

Important thing to remember when replacing the nerf bars on your 300EX

If you’re considering replacing the nerf bars on your 300EX, there are a few important things to keep in mind. The first is that while they share many of the same parts, they are not identical. 

For example, both models use the same front brake calipers and rotors; however, the 400EX also uses a different rear brake setup than its smaller counterpart.

If they don’t line up, you may have to drill new ones

If they don’t line up, you may have to drill new ones. If your aftermarket nerf bars have larger bolt holes than the stock ones, simply enlarge the holes in the chassis to match. 

You could also widen the spacing of your aftermarket nerfs by using longer bolts and washers if they are too tight with the stock setup.

You cannot mount 400ex nerf bars on a 300ex 

Unless you modify mounting bolts and replace rear wheels and suspension, You can mount 400EX nerf bars on a 300EX, but you will need to replace the rear wheels and suspension.

You can replace them with either stock or aftermarket 400EX nerf bars, but it’s worth doing a little research before you make your purchase.

Conclusion

If you’re looking to put 400EX nerf bars on your 300EX, then the first thing you’ll need to do is replace the rear wheels and suspension.

Then, you can either leave the stock nerf bars in place or replace them with aftermarket versions that fit your needs better. If you’re worried about compatibility issues, it’s worth doing a little research ahead of time so that you don’t end up having to drill new holes into your frame when installing the new parts.