Specialized Tarmac SL8 Expert

Name: Specialized Tarmac SL8 Expert
Brand: Specialized

2025 RoadRace Manufacturer page

Specialized Tarmac SL8 Expert, color Satin Champagne / Black Pearl

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 35–48t / 10–36t
Gear range: 494%
Weight: 7.77 kg 17.1 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

44cm
49cm
52cm
54cm
56cm
58cm
61cm

The manufacturer did not publish rider heights for these sizes.

Components

13 of 17 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

Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc Not identified

Suspension

1 part

Fork

Tarmac SL8 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc Not identified

Drivetrain

8 parts

Brakes

1 part

Brakes
- SRAM Rival

Wheels and tires

2 parts

Cockpit and contact points

4 parts

Handlebar
- Specialized
Saddle

Body Geometry Power Expert Not identified
Seatpost
- S-Works
Stem

Tarmac integrated stem, 6-degree Not identified

Sizes and geometry

7 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 54cm

Table

Reach 384mm

Stack 544mm

Wheelbase 978mm

Head angle 73.0°

Seat angle 74.0°

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 Reach Stack

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	366	375	380	384	395	402	408
Stackmm	501	514	527	544	565	591	612
Top tube lengthmm	496	509	531	541	563	577	595
Seat tube lengthmm	433	445	456	473	494	515	545
Head tube lengthmm	99	109	120	137	157	184	204
Head tube angle	70.5°	71.75°	72.5°	73°	73.5°	73.5°	74°
Seat tube angle	75.5°	75.5°	74°	74°	73.5°	73.5°	73°
Chainstay lengthmm	410	410	410	410	410	410	410
Wheelbasemm	970	973	975	978	991	1006	1013
Front centermm	572	574	577	579	592	606	613
Bottom bracket dropmm	74	74	74	72	72	72	72
Bottom bracket heightmm	266	266	266	268	268	268	268
Standover heightmm	723	735	746	768	786	808	834
Fork rakemm	47	47	47	44	44	44	44
Trailmm	71	63	58	58	55	55	52
Stack/reach ratio	1.37	1.37	1.39	1.42	1.43	1.47	1.50
Suspension and parts
Crank lengthmm	165	165	170	172.5	172.5	175	175
Handlebar widthmm	360	380	400	420	420	440	440
Stem lengthmm	70	80	90	100	100	110	110
Seatpost lengthmm	300	300	300	380	380	380	380

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon
Bicycle weight: 7.77 kg

17.1 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 35
Largest chainring: 48
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 36
Lowest gear: 28.2 in
Highest gear: 139.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BSA
Power meter: SRAM Rival with Power Meter, 48/35T
Additional specification: Model display: Rival AXS
Additional specification: Model id: rival-axs
Tire clearance: Maximum tire width: 32c
Tire width: 26c
Wheel material: Carbon
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

28.2 gear inches

This value is below the central range for this class.

Cohort: Road / Race Model year: 2025
Sample: 762 bicycles with this information
Coverage: 78.1% of the class

Highest gear

139.2 gear inches

This value is above the central range for this class.

Cohort: Road / Race Model year: 2025
Sample: 762 bicycles with this information
Coverage: 78.1% of the class

Shifting

Electronic

643 of 969 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2025
Sample: 969 bicycles with this information
Coverage: 99.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.8 km/h
Highest gear: 53.3 km/h

Total gear range 494%

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: 28.2–139.2 gear inches
Class reference (p10–p90): 28.2–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Race Model year: 2025
Lowest gear: 762 bicycles with this information, 78.1% of the class
Highest gear: 762 bicycles with this information, 78.1% 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 2025 builds
Specification	This bicycle Specialized Tarmac SL8 Expert	Specialized S-Works Tarmac SL8 - Forward 50 LTD	Specialized S-Works Tarmac SL8 LTD	Specialized S-Works Tarmac SL8 LTD - Forward 50 Collection	Specialized S-Works Tarmac SL8 LTD: Bull - Bora - hansgrohe Edition Red	Specialized S-Works Tarmac SL8 LTD - Remco's ‘Golden Season’
Frame
Bicycle weight	7.77 kg	6.65 kg	6.66 kg	6.65 kg	6.66 kg	6.7 kg
Drivetrain
Smallest chainring	35	Not informed	35	36	35	36
Largest chainring	48	Not informed	48	52	48	52
Smallest sprocket	10	11	10	11	10	11
Largest sprocket	36	30	33	30	33	30
Lowest gear	28.2 in	Not informed	30.8 in	34.8 in	30.8 in	34.8 in
Highest gear	139.2 in	Not informed	139.2 in	137.1 in	139.2 in	137.1 in
Other specifications
Power meter	SRAM Rival with Power Meter, 48/35TAdditional specification: Model display: Rival AXSAdditional specification: Model id: rival-axs	Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii PRECISION 3+ Powermeter Dual-SidedAdditional specification: Model display: PrecisionAdditional specification: Model id: precision	NEW SRAM RED AXS Power Meter, LTD, 48/35Additional specification: Model display: Red AXSAdditional specification: Model id: red-axs	Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii PRECISION 3+ Powermeter Dual-Sided, 52/36TAdditional specification: Model display: PrecisionAdditional specification: Model id: precision	NEW SRAM RED AXS Power Meter, LTD, 48/35Additional specification: Model display: Red AXSAdditional specification: Model id: red-axs	Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision 3+ Pro dual-sided powermeter, 52/36TAdditional specification: Model display: Precision ProAdditional specification: Model id: precision-pro
Tire clearance	Maximum tire width: 32c	Not informed	Maximum tire width: 32c	Maximum tire width: 32c	Maximum tire width: 32c	Not informed
Wheel material	Carbon	Not informed	Aluminum	Aluminum	Aluminum	Carbon