Surly Preamble Frameset

Nothing More is Needed. Nothing Less Will Do.

The Surly Preamble Frameset is just the beginning for your custom steel commuter built for comfort, durability, and buffoonery on pavement and gravel.

Preamble can run racks and fenders and carry a couple water bottles. Smooth and efficient on asphalt, Preamble’s double-butted main triangle provides a resplendent ride feel and withstands abuse from life’s inevitable potholes. On the road to steel euphoria, Preamble is the gateway drug.

Features:

• Geometry tuned for flat or drop bars
• Easy T-Shirt sizing to fit nearly every rider (XS,S,M,L,XL)
• Sloping top tubes on XS and Small frames for improved standover and comfort
• 650b wheelsets recommended for XS and S while M–XL are optimized for 700c
• Custom-cast single-position vertical dropout

Specs:

• Frame Construction: 100% Surly Chromoly steel, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
• Fork Construction: Surly Preamble, 100% Chromoly steel fork, Disc Only
• Rear Dropout Configuration: Vertical
• Rear Hub Spacing: 10 x 138mm Surly Gnot Boost QR
• Front Hub Spacing: 10 x 100mm
• Rear Brake: 51mm IS (160-180)
• Front Brake: 51mm IS (140-180)
• Headtube: ∅34mm
• Steerer Tube: &empty28.6mm
• Crown Race: 30mm (1-1/8″)
• Stock Headset Upper (S.H.I.S): EC34
• Stock Headset Lower (S.H.I.S): EC34
• Seat Collar ∅30.0mm
• Seatpost: ∅27.2mm
• Front Derailleur (Clamp): Bottom Pull (∅28.6)
• Max Chainring (CL): 1x: 42t / 2x: 46/36t max
• Bottom Bracket: 68mm BSA, threaded
• Tire Clearance Frame: XS-SM frames: 650b x 41mm (with or without fenders) / MD-XL frames: 700c x 41mm (with or without fenders)
• Tire Clearance Fork: 650b x 47mm or 700c x 44mm
• Rigid Fork Spec: 650b: 380 x 47mm; 700c: 400 x 44mm
• Bottle Mounts Frame: 2: Standard
• Rack Mounts Frame: Yes
• Rack Mounts Fork: Fork crown and mid-blade rack mounts and fender mounts
• Fender Mounts Frame: Yes
• Fender Mounts Fork: Fork crown and mid-blade rack mounts and fender mounts