What Our Gearhead(R) Experts Are Saying:"This mixed-wheel setup is perfect for riders who want the confidence of a 29in front wheel with the maneuverability of a 27. 5in rear. The Hydra2 hubs keep engagement instant, and the wide rims provide great tire support. Whether navigating techy climbs or hammering descents, this wheelset delivers."A mixed-wheel setup brings out the best in a long-travel bike, and the Hydra2 Enduro-S MX 29/27. 5in Wheelset is tuned for fast, technical riding. The 29-inch front wheel smooths out rough terrain and maintains speed, while the 27. 5-inch rear adds agility for quick line changes and playful handling. Built for aggressive enduro trails, this wheelset features 30mm internal width rims to optimize tire support and traction in loose, rocky conditions. Hydra2 hubs provide nearly instantaneous 0. 41deg engagement, making sure every pedal stroke counts. Designed for Boost spacing (15x110mm front / 12x148mm rear) and available in MS, XD, and HG freehub options, it's a ready-to-rip upgrade for any serious rider.