The all new TR 309/289s XC wheelset from Reynolds is perfect for aggressive XC/Trail racing and riding. With a low profile and wide channel rim, riders will experience increased cornering speed, direct power transfer, and improved compliance. The Reynolds TRs MTN hubs provide quick power delivery with 5° engagement. Plus, the TSS/PR3 rim construction offers industry-leading impact resistance and durability with a lifetime warranty.The 309/289s XC wheelset features a 30mm internal width front rim and a 28mm internal width rear rim. Wider rims allow for lower pressure, increased traction, and more precise steering. The rear rim has been reduced to 21mm for improved compliance and comfort. With most of the rider weight and power on the rear of the bike, the 28mm wide rim and 28 spokes provide the ideal balance between strength, comfort, and performance.The front rim has been widened to 30mm to enhance steering precision and sidewall stiffness. To maintain a similar feel to the rear, the spoke count has been decreased to 24, adding compliance and reducing weight for better maneuverability in tight sections of the trail.The use of PR3 in Reynolds Allroads, TR S, and TR mountain wheels ensures a balance of structural requirements, performance, and value. These rims have unique fiber and resin schedules that optimize the overall rim profile, rim bead, and brake track areas. Trust Reynolds for top-tier performance and durability in your XC or trail rides.