BikesSurlyMidnight Special 700c

Surly Midnight Special 700c (2026 revision) geometry

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Height178 cm · 5 ft 10 in

Inseam auto85 cm · 33.5 in

Size 54cm

Render Align Overlay50%

Geometry

Size	40cm	46cm	50cm	54cm	56cm	58cm	60cm	64cm
Stack mm	533	539	546	562	581	600	621	642
Reach mm	360	363	376	386	392	402	409	421
Head tube angle °	70.7	71.2	71.7	72.2	73.0	73.0	73.5	73.9
Seat tube angle °	75.2	73.7	73.2	73.2	73.0	73.0	72.5	72.4
Head tube length mm	95	100	110	125	140	160	180	200
Seat tube mm	400	460	500	540	560	580	600	640
Chainstay mm	425	425	425	425	425	425	425	425
BB drop mm	68	68	63	63	65	65	65	65
Fork rake mm	50	50	50	50	50	50	50	50
Stack to reach	1.48	1.48	1.45	1.46	1.48	1.49	1.52	1.52
Effective top tube mmi	501	521	541	556	570	585	605	625
Wheelbase mmi	995	996	1009	1019	1022	1038	1046	1060

Size54cmkey specs

Stack-to-reach (size 54cm)1.46

More aggressive (lower and longer) than 74% of gravel frames in the database at comparable sizes.

Closest geometry matches (size 54cm)

Matched by stack, reach and head tube angle.

BMC Roadmachine X2022–2354 · 562 / 386 KHS Grit 220 / 110alloy, 2025M/55 · 563 / 386 KOGA Colmaro AllroadCurrentM · 562 / 385 Masi CXR Comp / CXR Expertalloy, 201755 · 564 / 387 Foundry CamrockundatedM · 562.33 / 383.43 Foundry ValmontundatedM · 562.33 / 383.43

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Compare with another frame

Surly geometry chart · Frame stack and reach to the head tube top · Size finder assumes a 100mm stem on 20mm spacers · Report an error