2019 Specialized Allez Sprint Disc vs 2020 Specialized Tarmac SL6
The 49 is the Specialized Tarmac SL6 size closest to your 52 Specialized Allez Sprint Disc. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Specialized Tarmac SL6
Compared with the Specialized Allez Sprint Disc in 52, the Specialized Tarmac SL6 in 49 places the top of the head tube 5 mm lower and 5 mm further back, relative to the bottom bracket. Its wheelbase is 5 mm longer, which can contribute to stability at speed.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- −5 mm
- Shorter frame reach
- Wheelbase
- +5 mm
- Longer: steadier at speed
- Head angle
- −1.3°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Allez Sprint Disc, 52Specialized Tarmac SL6, 49Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Allez Sprint Disc 52 | Specialized Tarmac SL6 49 | Difference |
|---|---|---|---|
| Reach | 380mm | 375mm | −5 mm |
| Stack | 519mm | 514mm | −5 mm |
| Head tube angle | 73° | 71.75° | −1.3° |
| Seat tube angle | 74° | 75.5° | +1.5° |
| Effective top tube | 529mm | not listed | |
| Chainstay length | 410mm | 410mm | ±0 mm |
| Wheelbase | 968mm | 973mm | +5 mm |
| BB drop | 69mm | 74mm | +5 mm |
| BB height | 271mm | 266mm | −5 mm |
| Standover | 744mm | 740mm | −4 mm |
| Seat tube length | 480mm | 431mm | −49 mm |
| Fork length | 363mm | 363mm | ±0 mm |
| Head tube length | 120mm | 115mm | −5 mm |
Differences are the Specialized Tarmac SL6 minus the Specialized Allez Sprint Disc. Full charts: 2019 Specialized Allez Sprint Disc, 2020 Specialized Tarmac SL6.
Where each sits in its class
Specialized Allez Sprint DiscSpecialized Tarmac SL6
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Allez Sprint DiscDisc | Specialized Tarmac SL6S-Works |
|---|---|---|
| Fork | Specialized Tarmac SL6 | not listed |
| Seatpost | Specialized Venge | not listed |
| Derailleur | not listed | SRAM RED eTAP AXS |
| Cassette | not listed | SRAM RED XG-1290 |
| Chain | not listed | SRAM Red |
| Crankset | not listed | SRAM RED AXS Power Meter |
| Bottom bracket | not listed | SRAM DUB |
| Wheelset | not listed | Roval CLX 50 |
| Tire | not listed | Specialized Turbo Cotton |
| Hub | not listed | Specialized LuHai_RVT66L-K5-B25-AN2-N4-F0 |
| Brake | not listed | SRAM Red eTap AXS |
| Saddle | not listed | Specialized S-Works Power |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
