What Our Gearhead(R) Experts Are Saying:"These are hands down the stiffest and most efficient gravel shoes I've ridden. The Pontoon system really locks you in for better power transfer, but they're still surprisingly walkable for hike-a-bike sections. Add dual BOA dials and it's the perfect mix of race-day speed and real-world comfort."The RX910 S-PHYRE brings Shimano's highest performance pedigree to the gravel scene. Designed for racers and riders chasing podiums, this pro-level shoe blends raw efficiency with real-world versatility. The stiff, lightweight TPU outsole and low stack height ensure every watt is transferred into forward motion, while Shimano's new Pontoon Cleat System stabilizes the pedal interface for unmatched power delivery. Off the bike, a curved sole profile improves balance and traction for hike-a-bike moments, and dual drain holes help keep feet dry in wet conditions or cool on hot days. Dual BOA(R) Li2 dials allow micro-adjustments mid-ride, while an anti-twist heel cup locks the foot securely in place. With replaceable pontoons to extend longevity and multiple colorways to match your kit, the RX910 is built for gravel riders who demand the very best.