Is Surly Midnight Special a Good Choice? -[Surly Midnight Special Review]

Originally published August 25, 2023 · Last updated August 23, 2026

Short answer: the Surly Midnight Special 650b build discussed here is a steel road-plus bike for rough pavement, all-day road rides, gravel connectors, commuting, and light luggage. Its 4130 Chromoly frame and fork, 650×47 tires, Rival 1 drivetrain, thru-axles, and mechanical discs create a durable and adaptable package. It is less suitable for minimum-weight racing or technical trail riding.

This guide uses Surly’s official Midnight Special 650b complete build in Black as the matching reference for the published Rival 1 and WTB Horizon specifications. Surly lists a 4130 Chromoly frame and fork, Rival 1 40-tooth crank and shifter, SunRace 11-42 cassette, TRP Spyre brakes, 12mm thru-axles, and 650×47 tires. Colors and later 700c builds differ, so confirm the exact complete bike rather than applying one build sheet to every Midnight Special.

Who This Bike Suits

How the Midnight Special 650b Should Ride

Surly positions the Midnight Special as a road-plus bike for potholes, deteriorating pavement, gravel, and all-day rides. The steel frame and high-volume tires favor grip and composure over sharp race-bike response. It remains a drop-bar road platform, so it pedals efficiently on connectors without becoming a mountain bike.

Broken Pavement and Gravel Connectors

WTB Horizon 650×47 tires provide enough volume to lower pressure for rough roads while preserving a road-like overall diameter. They soften chatter and improve grip, but their relatively smooth tread is better for hard surfaces than deep mud or loose technical terrain.

Surly lists clearance for 650b x 50mm or 700c x 42mm without fenders, and 650b x 50mm or 700c x 38mm with fenders. Actual mounted width depends on rim and tire, so physical clearance must be checked.

Climbing, Speed, and Loaded Riding

The Rival 1 40-tooth crank and SunRace 11-42 cassette create a broad 1x range with simple controls. The easiest ratio supports ordinary mixed-surface climbs, while the largest gear is lower than a compact 2x road drivetrain at high speed.

Steel construction and wide tires add weight compared with a race bike. Light luggage suits the frame’s practical purpose, but cargo increases braking distance and wheel load, especially on long descents with mechanical discs.

Components That Matter

4130 Chromoly Frame and Fork

Surly uses 4130 Chromoly Natch tubing with a double-butted main triangle, TIG welds, and ED coating. The matching steel fork includes brazed fittings and supports the platform’s utility orientation.

Inspect the frame and fork for dents, bent tubes, cracked welds, corrosion, damaged threads, and poor repairs. Pay attention to the head tube, down tube, bottom bracket, chainstays, dropouts, rack fittings, and steerer.

SRAM Rival 1 Drivetrain

The official 650b Black build uses a Rival 1 rear derailleur, shifter, and 40-tooth crank with a SunRace 11-42 eleven-speed cassette and KMC X11 chain. A 1x system removes the front derailleur and keeps controls straightforward.

Check chain wear, cassette and chainring teeth, derailleur clutch, hanger alignment, bottom bracket, crank, freehub, and cable movement. Replacement cassette range and driver compatibility should be confirmed before upgrades.

TRP Spyre Mechanical Disc Brakes

TRP Spyre calipers use cable actuation and 160mm front and rear rotors. Their dual-piston mechanical design can provide useful control when pads, cables, housing, and rotors are correctly set.

Inspect pad thickness and clearance, rotor wear, cable friction, caliper centering, and lever travel. Loaded or wet descending requires more frequent checks and deliberate braking technique.

650b Tubeless-Ready Wheel Package

Alex Adventurer 2 tubeless-ready rims, Novatech thru-axle hubs, and WTB Horizon 650×47 tires form the matching complete-bike package. The front uses a 12mm axle and the rear a 142mm thru-axle arrangement.

Check rim condition, spoke tension, hub bearings, freehub, axle threads, tape, valves, sealant, tire casing, and wheel trueness. Verify whether the tires are currently tubed or tubeless before choosing pressure.

Fit, Comfort, and Everyday Use

Midnight Special sizing spans a wide range and cockpit parts vary by size. Check reach to hoods and drops, saddle height, shoulder relaxation, toe clearance, brake reach, stand-over, and safe seatpost insertion on the exact frame.

Wheel choice can affect toe overlap, bottom-bracket height, steering feel, and tire clearance. Do not install a 700c or larger 650b tire only because the frame family can support multiple formats; verify the exact combination and fender space.

Limitations to Consider

The Midnight Special is versatile, but a steel road-plus frame is not the lightest choice for racing and 47mm tires are not the fastest on smooth pavement. A second wheelset can broaden use, but it adds cost and compatibility work.

Mechanical brakes and 1x gearing suit simplicity, not every rider. Those wanting lower loaded-climbing gears, closer road steps, or hydraulic lever feel should compare alternative builds before buying and upgrading later.

Frameset versatility can also make a used example difficult to identify. Record the installed wheel diameter, rim width, axle hardware, cassette driver, brake mounts, crank and bottom bracket before ordering parts; a model name alone is not a compatibility specification.

• Confirm the 650b complete build, frame size, color, and installed drivetrain.
• Inspect steel frame and fork for dents, cracks, corrosion, and damaged mounts.
• Measure chain wear and test Rival shifting, clutch, cassette, and freehub.
• Check TRP brakes, pads, rotors, cables, thru-axles, hubs, and spokes.
• Verify tire size, tubeless condition, frame clearance, and rack or fender hardware.

Specifications for the Model Discussed

Reference build	Surly Midnight Special 650b complete, Black
Frame and fork	4130 Chromoly, TIG-welded and ED-coated
Drivetrain	SRAM Rival 1 1×11; 40T; SunRace 11-42
Brakes	TRP Spyre mechanical discs; 160mm front and rear
Wheels and tires	Alex Adventurer 2; WTB Horizon 650×47
Axles	12mm front; 142mm rear thru-axle
Maximum listed tire	650b x 50 or 700c x 42 without fenders
With fenders	650b x 50 or 700c x 38

2026 Surly Midnight Special Lineup: 700c and 650b Choices

Surly’s current Midnight Special collection shows a broader range than the 650b Rival 1 bike discussed here. Multiple complete 700c builds now sit alongside a 650b Black complete and several frameset colors, so the name alone no longer identifies one wheel, drivetrain, or brake package.

Area	650b Rival 1 build discussed here	Current lineup	Buying effect
Wheel emphasis	650b road-plus complete	Several 700c completes plus a 650b complete	Buyers can prioritize faster road response or higher-volume 650b comfort.
Drivetrain	SRAM Rival 1	Varies by color and complete build	Verify shifters, cassette, crank, and freehub instead of assuming every bike matches an older review.
Brakes	TRP Spyre mechanical discs	Varies by complete build; flat-mount standard remains	Lever feel and maintenance needs depend on the exact specification.
Frame utility	4130 chromoly, rack and fender mounts	Steel frame and fork, rack and fender mounts	The durable, adaptable road-plus identity remains central.
Tire room	High-volume 650b setup	Up to 700c x 42mm or high-volume 650b depending on build, with less room under fenders	The same platform can be tuned for pavement, broken roads, or light gravel.

Which Wheel Size Should You Choose?

Choose 700c for predominantly paved rides, quicker tire response, and easier access to fast road and all-road tires. Choose 650b when large tire volume, lower pressures, and comfort on damaged surfaces matter more than a crisp road feel. Frame size and toe clearance should also influence the decision, particularly for smaller riders.

A used Rival 1/Spyre bike can still be excellent value, but price it according to its actual equipment and condition. Inspect the steel frame and fork for corrosion, check thru-axles and wheel bearings, measure chain wear, test both calipers, and confirm the tire and fender combination fits safely. A frameset build offers more control over parts, yet total cost can exceed a complete bike quickly once wheels, brakes, drivetrain, cockpit, and labor are included.

Value and Alternatives

The Midnight Special is valuable when its durable frameset, wide tire options, and practical fittings match the rider’s long-term plans. Include tires, tubeless service, chain, cassette, brake cables, pads, rotors, bearings, and racks in a used-bike budget. The existing links below lead to offers and alternatives; verify exact build, condition, price, and warranty.

• Surly Midnight Special
• Click View
• Click View
• Click View
• Click View
• What Makes The Trek 520 Such A Powerful Gravel Road Bike

FAQ

Is the Midnight Special a gravel bike?

It is a road-plus bike that handles rough pavement and suitable gravel. It is not a suspension-equipped technical trail bike.

Can it use 700c wheels?

Yes, Surly lists 700c tire clearance, but the complete wheel, tire, fender, and frame-size combination must be checked.

Are the TRP Spyre brakes hydraulic?

No. They are cable-operated mechanical disc brakes with dual moving pads.

Is the steel frame maintenance-free?

No. Inspect for corrosion and damage, protect exposed areas, keep fittings serviced, and address paint chips appropriately.

Final Verdict

The Surly Midnight Special 650b is a durable and adaptable road-plus bike for rough pavement, gravel connectors, all-day rides, commuting, and light luggage. Its steel frame, 47mm tires, thru-axles, Rival 1 gearing, and mounts create real versatility. Choose it for mixed-surface utility; choose a race bike for low weight or a mountain bike for technical terrain.