Surly MidNight Special Frame Fork Set

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Midnight Special is a road plus bike designed to provide comfort and speed on those all-day rides that extend well beyond fresh pavement.

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Surly MidNight Special Frame Fork Set

Road Plus Bike That Tackles Pavement & Gravel

Midnight Special shines on pot-holed, deteriorating pavement and the occasional long stretch of gravel. Its 650b road plus tires eat up road chatter and absorb all the bumps in the road like the champion it was designed to be.

When it comes to road bikes, we just want to toss a few bananas into our pockets and see where the road takes us. We seek out varied surfaces on our rides and frequently go from pavement to gravel to shittier pavement. Midnight Special allows us to accomplish all of that quite comfortably.

  • Higher volume tires allow better fine-tuning of tire pressure on varying surfaces and create a wider contact patch for increased traction
  • Modern road standards like flat-mount disc brakes, 12mm front and rear thru-axles, and a 44mm head tube
  • Clearance for 650b x 60mm or 700c x 42mm tires without fenders (650b x 50mm or 700c x 38mm with fenders)
Frame Construction
4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, ED coated
Fork Construction
4130 Chromoly, Natch tubing, TIG welded, brazed lugs, ED coated
Rear Dropout Configuration
Rear Hub Spacing
12 x 142mm  (Surly axle included)

10 x 135mm with Surly 10/12 Adapter Washers (not included)

Front Hub Spacing
12 x 100mm (Surly axle included)
Rear Brake
Disc – Flat Mount (160mm max rotor) – 25mm thick mount / 32mm bolt length
Front Brake
Disc – Flat Mount (160mm max rotor) – Use Brake Manufacturer’s Front Flat Mount Adapter and Supplied Bolts
Head Tube
Steerer Tube
Ø28.6mm (1-1/8″)
Crown Race
Ø30mm (1-1/8″)
Stock Headset Upper (S.H.I.S.)
Stock Headset Lower (S.H.I.S.)
Seat Collar
Front Derailleur (Clamp)
Bottom-pull (Ø28.6mm)
Max Chainring (CL)[3]
1x (Road): 44T

2x (Road): 34/50T

3x (Road): 30/39/50T

Bottom Bracket
68mm threaded (1.37″ x 24TPI)
Tire Clearance Frame [1]/[2]
27.5 x 2.35″  (w/o fenders)

700c x 42mm (w/o fenders)

650b x 50 (w/ fenders)

700c x 38mm (w/ fenders)

Tire Clearance Fork [1]
27.5 x 2.35″ (w/o fenders)

700c x 42mm (w/o fenders)

650b x 50 (w/ fenders) 700c x 38mm (w/ fenders)

Rigid Fork Spec
400 x 50mm (40 – 54cm)

400 x 40mm (56 – 64cm)

Max Suspension Fork Length [4]
Bottle Mounts Frame
3 Standard
Bottle Mounts Fork
Rack Mounts Frame
Yes (upper and lower threaded)
Rack Mounts Fork
Yes (upper, lower, and mid-blade threaded)
Fender Mounts Frame
Fender Mounts Fork
Other Features
Downtube mounted shifter bosses (cable housing stops not included with frameset)

Manufacturer website


Surly Bicycles

Surly steel bicycles

Offers range of bikes, from fat bikes to travel bikes and fixed gears. Unique tubing for each model and size. Shipping in Europe.
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Additional information

Weight N/A


Wheel size

650B, 700C