Specialized Tarmac Compact

2012 RoadRace Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 10 34–50t / 12–28t
Gear range: 343%
Frame: Carbon
Brakes: Rim brake

Rider height by size (cm)

Size guide

49cm 155–163
52cm 161–169
54cm 166–175
56cm 172–181
58cm 178–186
61cm 183–191

Components

15 of 19 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Specialized FACT 8r carbon, FACT IS construction, compact race design, 1-1/2"" lower bearing, threaded BB Not identified

Suspension

1 part

Fork
- Specialized

Drivetrain

7 parts

Bottom bracket

BSA, 68mm, threaded Not identified
Cassette
- Shimano CS-4600 12–28t
CS-4600
Chain
- Shimano Tiagra
Crankset
- Shimano Tiagra
Front derailleur
- Shimano Tiagra
Rear derailleur
- Shimano Tiagra
Shifters
- Shimano Tiagra

Brakes

2 parts

Wheels and tires

2 parts

Rims

Front: DT Axis 2.0, Rear: DT Axis 2.0 Not identified
Tires
- Specialized

Cockpit and contact points

6 parts

Handlebar
- Specialized
Headset
- Cane Creek Headset Bearings
Pedals

Nylon flat test ride, loose ball, w/ reflectors Not identified
Saddle
- Ritchey Comp
Seatpost
- Specialized
Stem
- Specialized

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 387mm

Stack 543mm

Wheelbase 981mm

Head angle 73.0°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	386	386	387	395	402	408
Stackmm	504	526	543	564	591	612
Top tube lengthmm	518	537	548	565	582	600
Seat tube lengthmm	460	490	510	530	550	580
Head tube lengthmm	100	120	145	170	205	230
Head tube angle	72.25°	73°	73°	73.5°	73.5°	74°
Seat tube angle	75.5°	74°	73.5°	73.25°	73°	72.5°
Chainstay lengthmm	405	405	405	405	407	410
Wheelbasemm	970	970	981	989	1007	1019
Front centermm	576	576	586	594	610	618
Bottom bracket dropmm	71.5	71.5	69	69	67.5	67.5
Bottom bracket heightmm	264	264	267	267	268	268
Standover heightmm	730	755	775	795	826	850
Fork rakemm	45	45	45	43	43	43
Trailmm	62	57	57	56	56	53
Stack/reach ratio	1.31	1.36	1.40	1.43	1.47	1.50
Suspension and parts
Crank lengthmm	170	170	172.5	172.5	175	175
Handlebar widthmm	400	420	420	420	440	440
Stem lengthmm	75	90	100	100	110	110

Not published by the manufacturer: Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 10
Smallest sprocket: 12
Largest sprocket: 28
Lowest gear: 35.2 in
Highest gear: 120.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire width: 23c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

35.2 gear inches

This value is within the central range for this class.

Cohort: Road / Race Model year: 2012
Sample: 134 bicycles with this information
Coverage: 99.2% of the class

Highest gear

120.8 gear inches

This value is within the central range for this class.

Cohort: Road / Race Model year: 2012
Sample: 134 bicycles with this information
Coverage: 99.2% of the class

Shifting

Mechanical

14 of 135 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2012
Sample: 135 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.5 km/h
Highest gear: 46.3 km/h

Total gear range 343%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 35.2–120.8 gear inches
Class reference (p10–p90): 32.9–139.7 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Race Model year: 2012
Lowest gear: 134 bicycles with this information, 99.2% of the class
Highest gear: 134 bicycles with this information, 99.2% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2012 builds

Differences across 2012 builds
Specification	This bicycle Specialized Tarmac Compact	Specialized S-Works Tarmac SL4	Specialized S-Works Tarmac SL4 Black	Specialized S-Works Tarmac SL4 Di2	Specialized S-Works Tarmac SL4 SRAM Red	Specialized Tarmac Mid-Compact Apex
Drivetrain
Smallest chainring	34	39	39	39	39	36
Largest chainring	50	53	53	53	53	52
Smallest sprocket	12	11	11	11	11	11
Largest sprocket	28	25	25	25	25	28
Lowest gear	35.2 in	45.2 in	45.2 in	45.2 in	45.2 in	37.3 in
Highest gear	120.8 in	139.7 in	139.7 in	139.7 in	139.7 in	137.1 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Electronic	Mechanical	Mechanical
Other specifications
Bottom bracket standard	BSA	Not informed	BB30	Not informed	Not informed	BSA
Wheel material	Aluminum	Aluminum	Carbon	Aluminum	Aluminum	Aluminum