Radar
March 17, 2026

Surly‘s newest bike is a throwback to the first mountain bikes. Lowside is a rigid 27.5 MTB with vintage cruiser vibes. Call it a singletrack saint or a pub bike sinner, this stripped-down single-speed is a celebration of the days of klunkin’.
Singlespeeding has been a part of Surly’s brand since day one, when it launched the 1×1 Rat Ride. Lowside picks up right where the 1×1 left off.
Specs:
- Three colors
- Three builds
- Five sizes
- Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles
- Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though)
- Spec’d with 27.5 x 2.8” Maxxis Rekon+ tires; also capable of running 26 x 3″ tires
- Color-matched Surly Sunset handlebar with silver components
See more at Surly.
