We like Reserve because it's a brand that continuously produces quality wheelsets. Their carbon rims are stiff and speedy, and their mountain biking wheelsets are something to write home about. The E-MX Boost Wheelset comes from the Reserve mountain biking series, and it stands out as a wheelset that's tough and reliable on the trail. This wheelset uses a Reserve 30 with 28 spokes in the front for top-quality trail feel while the DH 31 in the rear is built stiffer and burlier for the biggest on-trail impacts. The rim's wide internal width supports a 2. 3-2. 6 inch tire and the thick rim beads won't protest when you speed through rough, rocky terrain. Riding down sharp terrain with steep drops and harsh rocks the Reserve 30 and DH rim combo is a final stop to handle all sorts of on-trail abuse. It's a highly durable wheelset that's also of great quality, and it's lightweight considering that it was designed with aggressive trail riding in mind. They're stiff, but they offer precise handling so we're always feeling good on our rides.