Fulcrum Red Metal 1 XL 6-Bolt MTB Front Wheel As with all Fulcrum® products in designing the Red Metal TM 1 XL three important factors were taken into consideration: weight reduction, increased performance & durability. The Red Metal TM 1 XL is built to stand up to all of the abuse that the trail can put in front of it while maintaining its heightened performance in all conditions & over all types of terrain. A race ready wheelset ready to climb hills, overcome obstacles & descend with the best. Ultra-Fit™ Tubeless: Imagine the rim & tyre as a single unit composed of two materials. This is what we wanted to achieve conceptually with Ultra-Fit™ Tubeless technology. The rim was developed during the design stage to obtain perfect adherence with the tyre. The consequent elimination of friction makes it possible to improve performance considerably. Energy dispersion is drastically reduced by the tubeless tyre. The advantages are indisputable even in terms of practicality. Fitting the