Velopedia Bicycle Archive

2012 Surly Pacer

Original specifications.

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At a glance

Archive #5055569
Model year
2012
Category
Road
Original MSRP
$1,400.00
Sizes
42cm, 46cm, 50cm, 52cm, 54cm, 56cm, 58cm, 60cm, 62cm
Colors
Sparkleboogie Blue
In this record
17 specifications · archived image · original MSRP
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Original buildSurly 4130 CroMoly steel

Manufacturer catalog

Published sizes and colors

9 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

42cm46cm50cm52cm54cm56cm58cm60cm62cm

Published colors

Sparkleboogie Blue

Frameset

Frame MaterialSurly 4130 CroMoly steel
ForkSurly 4130 CroMoly steel

Drivetrain

ShiftersShimano Tiagra 10spd
Front DerailleurShimano Tiagra
Rear DerailleurShimano Tiagra
CranksetAndel RSC2 34/50t
Bottom BracketShimano UN-54
CassetteShimano Tiagra 10spd 12-28t
ChainSRAM PC-1071

Brakes

BrakesTektro R358 Alloy Dual Pivot

Cockpit & Contact Points

HeadsetCane Creek Forty Series
HandlebarSalsa Short & Shallow
StemKalloy AS-008
SaddleWTB SST Comp
SeatpostKalloy SP-342

Wheels & Tires

HubsShimano Tiagra Shimano Tiagra
Front TireConti Ultrasport 700 X 28c

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

All published sizes50/34T · 12–28T · 10-speed
Lowest1.21:1 Highest4.17:1 Total range343%

Speed unavailable: wheel or tire size is missing or unclear.

Add your rear tire size to calculate speed
How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Your gearing setup
Gears

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Gear, dimension and cadence changes update results automatically.

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
SRAM PC-1071
Retailer offers
Front tire · Original
Conti Ultrasport 700 X 28c
Retailer offers
Other replacement options (2)
Cassette · Original
Shimano Tiagra 10spd 12-28t
More parts (11)Fewer parts
Brake pads · Original
Tektro R358 Alloy Dual Pivot
Bottom bracket · Original
Shimano UN-54
Saddle · Original
WTB SST Comp
Front derailleur · Original
Shimano Tiagra
Rear derailleur · Original
Shimano Tiagra
Shifters · Original
Shimano Tiagra 10spd
Handlebar · Original
Salsa Short & Shallow
Stem · Original
Kalloy AS-008
Seatpost · Original
Kalloy SP-342
Headset · Original
Cane Creek Forty Series
Hubs · Original
Shimano Tiagra Shimano Tiagra

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Service essentialsQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Front tire
Conti Ultrasport 700 X 28cCheck: Verify the fitted tire’s size marking and rim type.
Drivetrain
10-speedCheck: Match the installed drivetrain family, not just its speed count.
Bottom bracket / shell
Shimano UN-54Check: Verify shell type and width, crank interface, and spindle length or spacers.

Not confirmed in this record: Rear tire · Seatpost diameter. Check the fitted parts for these details.

Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
0 of 19 checked Progress stays in this browser for this record.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2012 Surly Pacer · Road · Published sizes: 42cm, 46cm, 50cm, 52cm, 54cm, 56cm, 58cm, 60cm, 62cm

Archived: Frame: Surly 4130 CroMoly steel · Fork: Surly 4130 CroMoly steel

Archived: Shifters: Shimano Tiagra 10spd · Front derailleur: Shimano Tiagra · Rear derailleur: Shimano Tiagra · Crankset: Andel RSC2 34/50t · Bottom bracket: Shimano UN-54 · Cassette: Shimano Tiagra 10spd 12-28t · Chain: SRAM PC-1071

Archived: Brakes: Tektro R358 Alloy Dual Pivot

Archived: Hubs: Shimano Tiagra Shimano Tiagra · Front tire: Conti Ultrasport 700 X 28c

Controls and contact points

Archived: Headset: Cane Creek Forty Series · Handlebar: Salsa Short & Shallow · Stem: Kalloy AS-008 · Seatpost: Kalloy SP-342 · Saddle: WTB SST Comp

Before and during the test ride

Follow the full used-bike inspection order →

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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