What Our Gearhead® Experts Are Saying:"The Hydra2 Grade-S MX 29/27. 5in Wheelset gives me the best of both worlds. The 29in front keeps things stable at high speeds, while the 27. 5in rear adds maneuverability on tight lines. With Hydra2 hubs for instant engagement and a bombproof alloy build, these wheels handle anything from big mountain descents to enduro racing."For riders who thrive on speed and agility, the Hydra2 Grade-S MX 29/27. 5in Wheelset brings the best of both wheel sizes into one unstoppable setup. The 29-inch front wheel smooths out rough terrain and enhances control, while the 27. 5-inch rear wheel keeps handling responsive and playful in tight corners. At the heart of the wheelset, Hydra2 hubs provide 0. 41° engagement, ensuring instant power transfer when accelerating out of berms or hammering through rock gardens. The 31mm internal width supports modern enduro tires for maximum grip and control, and the 32-spoke construction reinforces durability for repeated big hits. Designed for Boost spacing (15x110mm front / 12x148mm rear) and available with XD and HG freehub options, this wheelset is ready for aggressive enduro and downhill riding.