Surly Midnight Special Frame Set 2026
Description
Surly Midnight Special – Road-Plus bike for tarmac, gravel and rough roads
4130 chromoly steel • 650b & 700c compatible • Flat-mount brakes
The Surly Midnight Special frameset is the ideal basis for a versatile all-road or endurance bike. With generous tyre clearance, robust chromoly steel and modern standards, it offers maximum flexibility for tarmac, gravel and long tours.
Size: 58 in stock: Delivery in 3–6 days
Sizes: 650b/700c – 40cm, 46cm, 50cm, 54cm, 56cm, 58cm, 60cm, 64cm
Colour: cherry fizz
Current delivery date: 50, 54, 56, 64 – July 2027
Please enquire about the current delivery date for your size.
Specifications:
Tyre & wheel compatibility
Design size:
• 650b × 50 mm
Alternative sizes:
• 700c × 42 mm
Maximum tyre clearance (frame):
• 27.5 × 2.35" without mudguards
• 700c × 42 mm without mudguards
• 650b × 50 mm with mudguards
• 700c × 38 mm with mudguards
Maximum tyre clearance (fork):
• 27.5 × 2.35" without mudguards
• 700c × 42 mm without mudguards
• 650b × 50 mm with mudguards
• 700c × 38 mm with mudguards
Frame & Fork
Frame:
• 4130 chromoly, Surly Natch Tubing
• Double-butted main triangle
• TIG-welded
• ED-coated (corrosion protection)
Fork:
• 4130 chromoly, Natch tubing
• TIG-welded, brazed lugs
• ED-coated
• Rigid fork, length:
• 400 × 50 mm (sizes 40–54 cm)
• 400 × 40 mm (sizes 56–64 cm)
• Axle-to-crown: 400 mm
Axles & mounting widths
• 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)
Brake standard
• Front: Flat-Mount 140 mm (max. 160 mm)
• Rear: Flat-Mount 140 mm (max. 160 mm), 25 mm thick mount
Headset & steerer tube
• Top tube: ZS44/28.6
• Bottom tube: EC44/30
• Steerer tube: 1 1/8" (Ø 28.6 mm)
• Crown race: Ø 30 mm
Seatpost & clamping
• Seatpost: Ø 27.2 mm
• Dropper post: not compatible
• Seat clamp: Ø 30 mm
Drivetrain & Bottom Bracket
• Front derailleur: Bottom-pull, Ø 28.6 mm
• Bottom bracket: 68 mm BSA (1.37" × 24 TPI)
• Maximum chainring sizes:
• 1× Road: up to 44 teeth
• 2× Road: 34/50 teeth
• 3× Road: 30/39/50 teeth
Mounting points & accessories
• Shift cable bosses on the down tube (cable stops not included)
• 3 bottle cage positions
• Fork with:
• Luggage rack eyelets (top, bottom, mid-blade)
• Front and rear mudguard mounts
The Surly Midnight Special is a true Road-Plus bike for riders who don’t want to rely on perfect tarmac. It feels just as at home on rough, cracked road surfaces as it does on long gravel sections. The steel frame absorbs vibrations, smooths out potholes and ensures a smooth, controlled ride – that’s exactly what the Midnight Special was built for.
When you’re out on a road bike, you often just want to pop a few snacks in your bag and see where the road takes you. And that road is rarely just smooth tarmac. The Midnight Special loves varied terrain: from good roads to fine gravel right through to really rough surfaces. It rides comfortably, stably and surprisingly fast wherever you go.