Surly

Subtropic Algae Straggler Frameset

The Surly Straggler Frameset in Subtropic Algae is a gravel bike frame designed for unpaved terrain, day trips, and light bikepacking. It features a 4130 Chromoly frame with Natch tubing and a double-butted main triangle, paired with a 1-1/8" threadless Chromoly fork with brazed lugs. Available in 650b (46-52cm) and 700c (54-64cm) wheel sizes for optimized fit. It includes rack and fender mounts, two standard and one three-pack bottle mounts, updated thru-axle dropouts (12 x 100mm front, 12 x 142mm rear), flat-mount brakes, internal dropper routing, and a 44mm headtube. Tire clearance is 650b x 50mm (no fenders) or 650b x 47mm (with fenders) for 46-52cm, and 700c x 50mm (no fenders) or 700c x 47mm (with fenders) for 54-64cm. Weight is ~9 lb 1 oz (56cm) with axles and seat collar.
Key Features:

• Chromoly Frame: 4130 Natch tubing, double-butted for strength
• Versatile Fork: 1-1/8" threadless Chromoly with brazed lugs
• Mounting Points: Rack, fender, and bottle mounts
• Thru-Axle Dropouts: 12 x 100mm front, 12 x 142mm rear for stiffness
• Disc Brakes: Flat-mount for reliable stopping
• Tire Clearance: 650b x 50mm (no fenders) or 47mm (with fenders) for 46-52cm; 700c x 50mm (no fenders) or 47mm (with fenders) for 54-64cm
• 44mm Head Tube: Fits modern headsets
• Internal Dropper Routing: For dropper post compatibility