Best road bike wheels 2025: Aero options for a faster ride; American Classic will add 27.5"/650b variants to its three most popular mountain bike wheelsets: the All Mountain, the Race, and the ...

The RD 27 Series ride-on roller is offered in two models — the RD 27-100, with a 39.4-inch drum width, and the RD 27-120, with a 47.2-inch drum width. Each model has two vibration frequencies.

My first impression was that the Kleos RD 50 are pretty unexciting wheels. There's no extreme low weight to get excited about, or any groundbreaking technologies to pin this review on.