The original Crest rim helped introduce XC racers everywhere to the performance advantages of tubeless. With fast engagement and simple Today’s Crest MK3 is wider and even more versatile, while keeping all the characteristics that make Crest rims so fast on the course. Though wider, the Crest MK3 rim is even lighter than previous versions to accelerate quicker and attack the climbs. WideRight 23mm internal width improves stability with wider tires for more control on even the most technical sections of trail. Unlike many rims that have become too wide to work with 2.25” tires, the Crest MK3’s 23mm internal width maintains razor-sharp handling at speed. Inspired by our carbon technology, the Crest MK3 rim shape adds strength and virtually eliminates the chance of a tire pinch flat, allowing you to run the perfect tire pressure for any condition. That means better handling, less rolling resistance, and more traction. Refined over the past 15 years, our Bead Socket Technology offers the most trusted tubeless seal in the business, making the Crest MK3 the best choice for lightweight, tubeless XC performance.