Roubaix SL8 Sport Shimano 105
OverviewAbout the Specialized Roubaix SL8 Sport Shimano 105
The Specialized Roubaix SL8 Sport Shimano 105 is a road bike, built on a carbon frame, listed at $5,400. A drop-bar bike built for sealed roads, speed and distance.
SizingWhat size Roubaix SL8 Sport Shimano 105 do I need?
Enter your height to see the size we would start with.
| Size | Rider height | In feet |
|---|---|---|
| XS48 to 50 cm frame | 152 to 160 cm | 5 ft 0 in to 5 ft 3 in |
| S51 to 52 cm frame | 160 to 167 cm | 5 ft 3 in to 5 ft 6 in |
| M53 to 54 cm frame | 167 to 174 cm | 5 ft 6 in to 5 ft 9 in |
| ML55 to 56 cm frame | 174 to 181 cm | 5 ft 9 in to 5 ft 11 in |
| L57 to 58 cm frame | 181 to 188 cm | 5 ft 11 in to 6 ft 2 in |
| XL59 to 61 cm frame | 188 to 196 cm | 6 ft 2 in to 6 ft 5 in |
Height is a starting point: arm and leg length, flexibility and riding style all matter, so a test ride beats any chart. How bike sizing works.
SpecificationsWhat we know
- Brand
- Specialized
- Model year
- 2026
- Category
- Road
- Frame
- Carbon
- Wheel size
- 700c
- Drivetrain
- Shimano 105 2x12
- Brakes
- Disc
- Frame sizes
- 44, 49, 52, 54, 56, 58, 61
- Price
- $5,400, RRP AUD (Specialized Australia, checked 17 Oct 2026)
Specs and pricing are listed in AUD and sourced from Australian retail listings. Confirm the current details and availability with the seller before purchase.
GeometrySize 56
- Stack
- 605 mm
- Reach
- 389 mm
- Stack/reach
- 1.56
- Head angle
- 73 deg
- Seat angle
- 73.5 deg
- Wheelbase
- 1012 mm
- Chainstay
- 420 mm
- BB drop
- 78 mm
- Standover
- 787 mm
- Fork rake
- 47 mm
GearingRatios
Ratios are derived from the chainrings and cassette. They describe the gearing, not any rider's ability.
Drivetrain & buildFull specification
- Groupset
- Shimano 105
- Shifting
- Mechanical
- Drive
- 2x
- Speeds
- 12
- Crank
- Shimano 105, 12-speed 50/34t
- Chainrings
- 50/34
- Cassette
- Shimano 105 R7100, 12-speed 11-36t
- Rear derailleur
- Shimnao 105 R7100, 12-speed
- Brakes
- Shimano 105 Hydraulic Brake
- Wheelset
- DT Swiss G540 rim, 24mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples
- Rim internal width
- 24 mm
- Stock tyre
- 700x32c
- Tubeless
- Yes
- Fork material
- Carbon
- BB standard
- Shimano Threaded BSA BB
- Cockpit
- Future Stem, Comp / Specialized Hover Comp, Alloy, 125mm Drop, 75mm Reach w/Di2 Hole
- Saddle
- Body Geometry Power Sport, steel rails
Bike DNAWhat the numbers say
- Position
- Stack-to-reach 1.56 gives an upright, comfort-oriented riding position.
- Steering
- A 73 deg head angle points to balanced steering.
- Climbing
- Lowest ratio 0.94 is a low climbing gear that still handles steep pitches.
Derived from the published geometry and gearing above. It describes the numbers, not a ride test.
BikeFinder Data Profile: geometry and specification researched from published sources (Specialized Australia product page 4221828 (spec list and geometry chart)), verified 2026-10-17. This is a specification analysis, not a physical ride review.
Where to buyStockist
BikeFinder is an independent directory. We link to retailers; prices and stock are set by the seller and shown as at the date checked.
