surly preamble gravel bike Surly Preamble Drop Bar 2026 – Rouleur Cycles

surly preamble gravel bike Surly Preamble Drop Bar 2026 – Rouleur CyclesPreamble is a hard boiled, straightforward steel bike built for comfort, durability, and general buffoonery on mostly paved surfaces. KEY FEATURES 100% Surly Chromoly steel frame and fork Five easy to understand frame sizes to fit nearly every size of rider Clearance for 650b x 41mm tires (XS SM) and 700c x 41mm tires (MD XL) (with or without fenders) Frame Specifications Frame Construction 100% Surly Chromoly steel, Natch tubing, double butted main

Preamble is a hard-boiled, straightforward steel bike built for comfort, durability, and general buffoonery on mostly paved surfaces.

KEY FEATURES

• 100% Surly Chromoly steel frame and fork
• Five easy-to-understand frame sizes to fit nearly every size of rider
• Clearance for 650b x 41mm tires (XS/SM) and 700c x 41mm tires (MD-XL) (with or without fenders)

Frame Specifications
Frame Construction     100% Surly Chromoly steel, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
Fork Construction        100% Surly Chromoly Steel, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated
Rear Dropouts              Vertical
Rear Hub Spacing        "Gnot-Boost" 138mm; 10 x 135mm or 10 x 141mm
Front Hub Spacing        10 x 100mm
Front & Rear Brakes      Front Disc - 51mm I.S. (203mm max rotor); Rear Disc - 51mm I.S. (180mm max rotor)
Headset (S.H.I.S.)          EC34/30
Seatpost                        Ø27.2mm
Max Chainring               1x: 42t max; 2x: 46/36t max
Bottom Bracket              68mm BSA, Threaded
Wheel/Tire Sizes           XS-SM: 650b x 35; MD-XL: 700c x 35
Tire Clearance Frame   XS-SM: 650b x 41 (with or without fenders); MD-XL: 700c x 41 (with or without fenders)
Tire Clearance Fork      XS-SM: 650b x 42 (with or without fenders); MD-XL: 700c x 42 (with or without fenders)
Rigid Fork Spec            XS-SM: 380 x 47mm; MD-XL: 400 x 44mm

Component spec

Headset                        Cane Creek 40 OR FSA Orbit MX
Seatpost                        Kalloy 27.2 x 300mm, no offset
Stem                              TranzX JD-ST123A
Grips/Bar                       TapeVelo Black Cork
Saddle                           WTB Volt Medium
Handlebar                      TranzX JD-RA48A

Drivetrain
Rear Derailleur               Shimano CUES U6000 GS, Silver
Cassette                         Shimano CUES LG400, 11-48t, 10spd, Silver
Chain                              Shimano LG500
Crankset                         Shimano CUES U6030, 40T, Silver
Shifter                             Shimano CUES U3030, Silver
Brake Levers                  Shimano CUES U3030, Silver
Brake Calipers                Shimano RS305, Mechanical
Bottom Bracket               Shimano RS501 BSA
Rotors                             Shimano RT26, 160/160, 6-Bolt

Wheels
Tires                                Teravail Washburn 650b x 35, 30tpi, Wire Bead (XS-SM)Teravail Washburn 700c x 35, 30tpi, Wire Bead (MD-XL)
Front Hub                        Novatec QR x 100mm, 32h, 6-Bolt
Rear Hub                        Novatec QR x 141mm, 32h, 6-Bolt
Spoke                             14g Black
Rim                                 Shining DB-21, 32h
Weight Complete Bike    12.3kg (Medium)

Geometry chart HERE

*Specifications are subject to change without notice