Specialized Tarmac SL8 Carbon Frame Kit

Specialised Tarmac SL8 carbon frame kit - unbeatably fast

The Tarmac SL8 is the most aerodynamic frame Specialized has ever built. With its tapered head tube front, the so-called Speed Sniffer, and the super narrow seat post, it promotes a constant air flow and ensures less air turbulence. That's why the Tarmac SL8 is even more aerodynamic than the legendary Venge and 16.6 seconds faster over 40 kilometres than its predecessor, the SL7.
Of course, the aero performance does not come at the expense of weight: the frame weighs just 780 grams and even with a full aero setup you are close to the UCI weight limit. Thanks to more efficient load distribution on the down tube, seat tube and rear, the SL8 has less carbon layers, making it 15 % lighter than the SL7. This means riding fun not only in the mountains.
Acceleration and comfort go hand in hand with the Tarmac: the stiffness-to-weight ratio has been improved by 33%, which ensures perfect handling and direct response behaviour. The frame is stiffer at the bottom bracket, more precise in the steering and 6 % more compliant at the seat tube, exactly what you want in competition. In keeping with the Specialized Rider First Engineered philosophy, attention was also paid to the optimal carbon layup for each individual frame size. Naturally, the geometry of the Tarmac SL8 is equally suitable for men and women and was developed with feedback from Tour de France winner Demi Vollering and world champion Remco Evenepoel.

Specifications:

Application:

Road

Wheel Size:

28"

Size:

49 cm, 52 cm, 54 cm, 56 cm, 58 cm, 61 cm

Frame Material:

carbon (10r)

Fork Material:

carbon (10r)

Technical Information - Frame:

Wheel Standard:

12 x 142 mm (standard)

Axle Type:

12 mm thru-axle

Seatpost (Ø):

D-shaped

Seatpost Clamp(Ø):

integrated

Headset:

Specialized S162500005 (49,5 x 40,5 x 6,5 mm, 45°)

Bottom Bracket Standard:

BSA

Shell Width:

68 mm

Brake Mount:

flat mount

Front Derailleur Mount:

braze-on

Cable Routing:

internal, electronic

Bottle Cage Mounts:

2

Technical Information - Fork:

Steerer Tube:

1 1/8"

Wheel Standard:

12 x 100 mm (standard)

Axle Type:

12 mm thru-axle

Brake Mount:

flat mount

Offset:

47 mm, 44 mm

Trail:

71 mm, 63 mm, 58 mm, 55 mm

Axle to Crown:

370 mm

Over Locknut Dimension:

100 mm

Steerer Tube Material:

carbon

Blade Material:

carbon

Approved For:

Weight Limit:

109 kg (rider + gear)

Rotor Size (max.):

160 mm

Tyre Size (max.):

32 mm x 700c

Chainrings:

2x, 1x

Chainring Size (max.):

2x 42-55 t, 1x 52 t

Features:

• extremely aerodynamic carbon racing bike frame for competition use
• Speed Sniffer: revised, tapered head tube design for more constant airflow
• very narrow, aerodynamic seatpost for less air turbulence
• 16.6 seconds faster on 40 km than the predecessor model Tarmac SL7
• developed on the basis of the Aethos
• 15% lighter than SL7: optimised weight on down tube, seat tube and rear for better load distribution
• this makes it possible to save on carbon layers without sacrificing rigidity
• lightning-fast acceleration with more comfort thanks to the improved stiffness-to-weight ratio (33% better than the SL7)
• excellent handling and aggressive response behaviour
• stiffer at the bottom bracket, more precise in the steering and 6 % more compliant in the seat area, ideal for racing use
• riding fun in the mountains and comfort for long distances
• Rider-First concept and gender neutrality to optimise the geometry depending on the frame size
• developed with feedback from Remco Evenepoel and Demi Vollering
• generous tyre clearance up to 32 mm
• integrated Tarmac seat clamp
• intended use category 1: intended for driving on paved roads only

Technology:

FACT
FACT is an acronym for " Functional Advanced Composite Technology" and summarises all the know-how that Specialized has in the use of carbon fibre. It is a holistic approach, which primarily concerns the bike frames, but is found in many components such as handlebars, stems, saddles etc. The starting point is always the awareness for the needs of riders and the capability to fulfil them. Next, the selection of fibres, resins and fabric layers takes place; in this process the quality of the carbon and the arrangement of the fibre layers play an important role. It is important to find the right set-up for the project at hand and the intended location or rather the area of application. It is often necessary to differentiate from model to model at several points. In the final step, attention is paid to processing the material in a way that allows the desired advantages in terms of low weight, rigidity and stability to be achieved.

Rider-First Engineered
Rider-First Engineered describes the design approach used by Specialized to precisely match each frame size to the target group. Simply put, smaller frames for smaller riders are built in a different way than larger frames for larger riders. This is done on the basis of performance parameters determined in practical tests, taking into account the forces acting on different areas of the bike when riders of different sizes ride it. Based on this analysis, the optimum tube dimensions and the appropriate carbon fibre covering for the respective frame size are determined. This way you can be sure that no matter what your height is, you will receive a bike that delivers optimal and controllable performance suited to your size.

Aerodynamic Expertise from Specialized
" Aero is everything" is not an empty slogan at Specialized. Their engineers rely on decades of experience in aero design, and use a variety of state-of-the-art methods in the developing top aero racing machines. Central to this, of course, is the wind tunnel (" Win Tunnel" ) at the company's headquarters in California, which is available for round-the-clock testing. It is specially designed to meet the requirements of cyclists and typical situations in road cycling, such as team time trials or riding in a group. The development process always begins with the FreeFoil Shape Library, a collection of countless tube shapes and structures which helps engineers figure out the most interesting configurations for wind tunnel testing. But one does not always have to analyse actual objects. There is also Computational Fluid Dynamics (CFD), which uses computer simulations to experiment with aerodynamic properties. Specialized also makes use of the Data Acquisition System (DAQ), which collects data such as a rider's power, speed, riding position and wind angle of incidence during practical tests on the road or in the velodrome. In turn, conclusions can be drawn from all this information for use in bike fittings and fine tuning.

Geometry:

49 cm:

Recommended Height:

155 - 163 cm

Stack:

514 mm

Reach:

375 mm

Seat Tube Length:

445 mm

Effective Top Tube Length:

509 mm

Head Tube Length:

109 mm

Chainstay Length:

410 mm

Wheelbase:

973 mm

Bottom Bracket Height:

266 mm

BB Drop:

74 mm

Seat Tube Angle:

75.5°

Head Tube Angle:

71.75°

Standover Height:

735 mm

Fork Offset:

47 mm

Trail:

63 mm

Stem Length:

80 mm

Seatpost length:

300 mm

52 cm:

Recommended Height:

163 - 170 cm

Stack:

527 mm

Reach:

380 mm

Seat Tube Length:

456 mm

Effective Top Tube Length:

531 mm

Head Tube Length:

120 mm

Chainstay Length:

410 mm

Wheelbase:

975 mm

Bottom Bracket Height:

266 mm

BB Drop:

74 mm

Seat Tube Angle:

74°

Head Tube Angle:

72.5°

Standover Height:

746 mm

Fork Offset:

47 mm

Trail:

58 mm

Stem Length:

90 mm

Seatpost length:

300 mm

54 cm:

Recommended Height:

170 - 175 cm

Stack:

544 mm

Reach:

384 mm

Seat Tube Length:

473 mm

Effective Top Tube Length:

541 mm

Head Tube Length:

137 mm

Chainstay Length:

410 mm

Wheelbase:

978 mm

Bottom Bracket Height:

268 mm

BB Drop:

72 mm

Seat Tube Angle:

74°

Head Tube Angle:

73°

Standover Height:

768 mm

Fork Offset:

44 mm

Trail:

58 mm

Stem Length:

100 mm

Seatpost length:

380 mm

56 cm:

Recommended Height:

175 - 180 cm

Stack:

565 mm

Reach:

395 mm

Seat Tube Length:

494 mm

Effective Top Tube Length:

563 mm

Head Tube Length:

157 mm

Chainstay Length:

410 mm

Wheelbase:

991 mm

Bottom Bracket Height:

268 mm

BB Drop:

72 mm

Seat Tube Angle:

73.5°

Head Tube Angle:

73.5°

Standover Height:

786 mm

Fork Offset:

44 mm

Trail:

55 mm

Stem Length:

100 mm

Seatpost length:

380 mm

58 cm:

Recommended Height:

180 - 188 cm

Stack:

591 mm

Reach:

402 mm

Seat Tube Length:

494 mm

Effective Top Tube Length:

577 mm

Head Tube Length:

184 mm

Chainstay Length:

410 mm

Wheelbase:

1006 mm

Bottom Bracket Height:

268 mm

BB Drop:

72 mm

Seat Tube Angle:

73.5°

Head Tube Angle:

73.5°

Standover Height:

808 mm

Fork Offset:

44 mm

Trail:

55 mm

Stem Length:

110 mm

Seatpost length:

380 mm

61 cm:

Recommended Height:

188 - 196 cm

Stack:

612 mm

Reach:

408 mm

Seat Tube Length:

545 mm

Effective Top Tube Length:

595 mm

Head Tube Length:

204 mm

Chainstay Length:

410 mm

Wheelbase:

1012 mm

Bottom Bracket Height:

268 mm

BB Drop:

72 mm

Seat Tube Angle:

73°

Head Tube Angle:

74°

Standover Height:

833 mm

Fork Offset:

44 mm

Trail:

52 mm

Stem Length:

110 mm

Seatpost length:

380 mm

Manufacturer Number:

carbon-metallic vivid pink strata-electric green:

74924-71

Contents:

• 1 x Specialized Tarmac SL8 frame
• 1 x Specialized Tarmac SL8 fork
• 1 x Specialized Tarmac SL8 carbon seatpost, 15 mm offset
• 1 x Specialized Tarmac 6° stem