The H3 has propelled more Grand Tour riders to the podium than any other wheel. Year after year, it is independently chosen by the top riders in the world - when every second counts. TheGT3 is the next evolution of that iconic wheel.
Why change? It's not that the H3 got slower - it's that the riders began choosing wider tires. Gone are the days of 18 and 19 mm tires for time trials; riders now embrace the comfort and rolling speed advantages of wider rubber. The GT3 features a super-wide 26.5 mm rim, optimized for use with modern 21 and 23 mm tires.
The GT3 is a fantastic wheel for time trials and triathlons. Its solid one piece carbon construction makes it a top choice for athletes with busy travel schedules (and exposure to airline baggage handlers). There are no spokes to break, and the wheel can handle a lot of abuse. It's time for a new era of fast.
The GT3 tubular wheels are equipped with the durable and sleek engineered HED. Sonic H3 hubs.