Geometry Comparisons SURLY 1x1 (2011-2016 Models) - ComGeo (Bike Frame Geometry Comparison Site)

Model

SURLY / 1x1

Updated Last : April 21, 2025

Color

Key Features

Dig the 1x1, a singlespeed mountain bike. It was designed for 26˝ wheels, big tires (clearance for 2.75˝), and single cog and ring drivetrains. Run it with a freewheel, a fixed cog or if you like with an internal gear hub. The 1x1 is made of 4130 CroMoly tubing of our own design, with a custom double-butted main triangle and triple-butted fork blades for a tough yet responsive, lively ride. The geometry is pretty straightforward… it rides like a mountain bike. Chainstays are heat-treated for durability. It’s got 51mm I.S. disc caliper mounts for braking satisfaction. The fork can be replaced with a 100mm-travel suspension fork, but we’ve maintained good standover clearance, Clarence.

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1 Square = 10cm

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Size Chart

Size	XS	SM	MD	LG	XL	XS	SM	MD	LG	XL	XS	SM	MD	LG	XL
SeatTube Center To Top	379(None)	429(None)	481(None)	532(None)	582(None)	379(None)	429(None)	480(None)	531(None)	582(None)	379(None)	429(None)	480(None)	531(None)	582(None)
SeatTube Center To Center	295(None)	345(None)	397(None)	448(None)	498(None)	341(None)	391(None)	442(None)	493(None)	544(None)	341(None)	391(None)	442(None)	493(None)	544(None)
SeatTube Angle	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)	73(73)
Effective TopTube	546(546)	571(571)	596(596)	616(616)	631(631)	545(545)	565(565)	585(585)	600(600)	615(615)	545(545)	565(565)	585(585)	600(600)	615(615)
TopTube*	528(532)	547(549)	570(570)	592(590)	611(608)	521(521)	543(542)	568(569)	591(587)	614(608)	521(521)	542(542)	567(566)	588(587)	609(608)
HeadTube	90(90)	100(100)	110(110)	125(125)	145(145)	89(89)	89(89)	102(102)	114(114)	134(134)	89(89)	102(102)	114(114)	134(134)	159(159)
HeadTube Angle	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)	71(71)
Fork	453(453)	453(453)	453(453)	453(453)	453(453)	421(421)	421(421)	421(421)	421(421)	421(421)	413(413)	413(413)	413(413)	413(413)	413(413)
Fork Rake	40(40)	40(40)	40(40)	40(40)	40(40)	45(45)	45(45)	45(45)	45(45)	45(45)	45(45)	45(45)	45(45)	45(45)	45(45)
ChainStay	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)	419(419)
BB Drop	40(40)	40(40)	40(40)	40(40)	40(40)	43(43)	43(43)	43(43)	43(43)	43(43)	43(43)	43(43)	43(43)	43(43)	43(43)
BB Height*	306(None)	306(None)	306(None)	306(None)	306(None)	303(None)	303(None)	303(None)	303(None)	303(None)	303(None)	303(None)	303(None)	303(None)	303(None)
Reach*	378(None)	400(None)	422(None)	438(None)	447(None)	386(None)	406(None)	422(None)	434(None)	443(None)	388(None)	405(None)	421(None)	430(None)	438(None)
Stack*	550(None)	559(None)	569(None)	583(None)	602(None)	520(None)	520(None)	532(None)	544(None)	563(None)	512(None)	525(None)	536(None)	555(None)	579(None)
Stand Over*	721(717)	750(745)	779(774)	811(804)	844(838)	725(704)	749(737)	780(768)	810(798)	844(830)	722(715)	752(743)	782(774)	815(807)	852(842)
Front Center*	597(None)	622(None)	648(None)	668(None)	684(None)	599(None)	619(None)	640(None)	655(None)	671(None)	599(None)	620(None)	640(None)	656(None)	671(None)
Wheel Base*	1013(1012)	1038(1037)	1064(1063)	1084(1083)	1100(1099)	1015(1014)	1035(1019)	1055(1054)	1071(1067)	1086(1085)	1014(1014)	1035(1034)	1055(1054)	1071(1070)	1087(1086)
Tire Clearance	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()	26x2.75()

: reference values

: measured values

* : calculated values( ) : official values Details

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SURLY / 1x1

Model

SURLY / 1x1

Color

Key Features

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