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2025 Surly

Lowside

A 650b steel frame hipster bike with modest components and tektro hydraulic disc brakes.

Manufacturer Price

1 799 $US(1 547 €)
FrameSteel
SuspensionRigid
ForkSteel
Wheels650b Aluminum
DrivetrainSingle-speed
GroupsetNX Eagle
BrakesTektro Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

25 km/h

Lowside

43 km/h

Similar Bikes

Highest gear

(descending)

Sizing
XS

142cm – 151cm

SM

152cm – 164cm

MD

165cm – 174cm

LG

175cm – 184cm

Rider Fit Notes

None yet.

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Price History
Geometry
Specs
Build
Frame

Surly Lowside - 4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, E.D. coated

BB StandardBSA, 73mm, Threaded

Fork

Surly Lowside - 4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated

Bottom Bracket

73mm threaded (1.37" x 24TPI)

Headset

FSA Orbit ITA, Silver

Stem

Sunday Freeze Stem Top-Load, Silver

Handlebar

Surly Sunset (Painted to match frame)

Saddle

WTB Volt Medium, silver rails

Seatpost

Ø30.9mm

TypeRigid

Groupset
Rear Derailleur

N/A

Front Derailleur

N/A

Crank

SRAM NX Eagle, 32t

Shifters

N/A

Cassette

Surly 17T Cog w/ Spacer Kit, silver

Chain

KMC X9

Brakes

Tektro HD-M275/276, 2-piston

TypeTektro Hydraulic Disc

Brake Levers

Tektro HD-M275/276

Wheels
Rims

WTB ST i35 TCS 2.0 27.5", 32h

Front Hub

Novatec 15 x 110mm, silver

Rear Hub

Novatec 12 x 148mm, silver

Tires

Front: Maxxis Rekon+ 27.5" x 2.8", 60 TPI, tan sidewalls, tubeless-ready, WTB TCS Sealant included, Rear: Maxxis Rekon+ 27.5" x 2.8", 60 TPI, tan sidewalls, tubeless-ready, WTB TCS Sealant included

Disc Rotors

Disc - 51mm I.S. (203mm max rotor)

Rider Notes
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First added 18 avril

Last updated 30 mai