Hi Mike - Thanks for reaching out. It's amazing to hear that your son loves mountain biking so much. It sounds like he is already building up quite a biking resume!

Your local REI Field Team will be in the best place to answer this question. The Southeast region's team can be contacted at 877-819-3813 or at atlanta-os@rei.com.

Hopefully this helps!

At REI, we believe time outside is fundamental to a life well lived.