Description
The Surly Lowside Frameset in Medium features a 27.5″ steel frame finished in Blue Monday. Built with 100% Surly 4130 Chromoly steel, the main triangle is double-butted for strength, paired with a 1-1/8″ threadless Chromoly fork. This rigid frame is designed for singlespeed riding, featuring a derailleur hanger without Trip Guides and internal routing for a dropper seatpost with a 30.9mm seat tube diameter. It offers Boost rear spacing with 12mm x 145mm thru-axles front and rear, including a 15mm x 110mm front axle. The frame accommodates 26″ x 3″ or 27.5″ x 2.8″ tires and uses disc brakes. The effective top tube length is 610mm.
- Surly Lowside Frameset features a 27.5″ wheel size with compatibility for 26″ wheels as well.
- Constructed from 100% Surly 4130 double-butted Chromoly steel for durability.
- Includes a 1-1/8″ threadless Chromoly rigid fork for strength and control.
- Designed for singlespeed riding with a derailleur hanger but no Trip Guides.
- Offers internal routing for a dropper seatpost with a 30.9mm seat tube ID.





