When we are looking for a quaility set of carbon fiber rims we can always trust Reserve for a top-quality product. The Reserve 30 MX DT 350 29/27. 5in Boost Wheelset is a premium carbon wheelset that gives us uncompromising performance. These rims are made from premium carbon fiber and built and tested to the highest standards to ensure a top-tier wheelset. The Reserve 30 rims have a reinforced rim profile which includes offset spoke holes for easier tubeless installation and external reinforcements around the spokes offer additional durability. An asymmetrical design makes for a stiffer, stronger, and more reliable wheel so we can be confident sending it down chunky descents These rims are paired with DT Swiss's 350 hub, which features 36 points of engagement for race-worthy performance. This wheelset is a mixed-wheel configuration, giving us a 29-inch wheel up front and a 27. 5-inch wheel in the rear.