Surly Midnight Special Frame Set 2027

Endurance Road & Light Gravel Frameset 2027

The Surly Midnight Special is a versatile road and light gravel frameset designed for rough roads, potholes and long gravel sections. High-volume 650b or 700c tyres ensure comfort, control and excellent traction on varied terrain. Modern features such as flat-mount disc brakes, 12 mm thru-axles and a 44 mm head tube ensure the frame set is future-proof.

With tyre clearance of 650b x 50 mm or 700c x 42 mm (without mudguards), the Midnight Special offers maximum flexibility for tarmac, gravel and rough roads. Perfect for long tours, all-road adventures and comfort-oriented riders.

Available in two new colours for 2027: Abandoned Fishtank (dark green) and Mermaid Tears (turquoise blue).

Sizes: 40, 46, 50, 54, 56, 58, 60 and 64 cm

No photos are currently available; pre-orders are open and production slots are selling out rapidly.

Technical Specifications

Frame & Fork Tyre clearance

Without mudguards:

• 27.5 × 2.35"
• 700c × 42 mm

With mudguards:

• 650b × 50 mm
• 700c × 38 mm

Frame construction

• 4130 chromoly, Surly Natch Tubing
• Double-butted main triangle
• TIG-welded
• E.D. coating

Fork construction

• 4130 Chromoly, Natch tubing
• TIG-welded, brazed lugs
• E.D. coating
• Axle-to-crown: 400 mm
• Length: 400 × 50 mm (40–54 cm), 400 × 40 mm (56–64 cm)

Axles & Standards

• Front: 12 × 100 mm (Surly thru-axle included)
• Rear: 12 × 142 mm (Surly thru-axle included)
• Optional: 10 × 135 mm with Surly 10/12 adapter washers (not included)

Brakes

• Flat-mount 140 mm (max. 160 mm rotor)
• Rear mount 25 mm thick

Head tube / headset

• Top: ZS44/28.6
• Bottom: EC44/30
• Steerer tube: 1 1/8" (Ø28.6 mm)
• Crown race: Ø30 mm

Seat area

• Seat post: Ø27.2 mm
• Seat clamp: Ø30 mm
• Dropper seatpost: not compatible

Bottom bracket

• 68 mm BSA (1.37" × 24 TPI)

Drivetrain compatibility

• 1× Road: max. 44T
• 2× Road: 34/50T
• 3× Road: 30/39/50T
• Front derailleur: Bottom-pull, Ø28.6 mm

Mounting points

• 3 bottle cages
• Shift cable bosses on the down tube (cable stops not included)
• Fork: upper, lower and mid-blade rack mounts
• Front and rear mudguard mounts