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Radon Vaillant vs Specialized Tarmac SL7
Pick up to 4 bikes. Rows line up component by component. Highlighted rows differ, and green marks the best value where lower or higher is clearly better.
Key differences
- The Radon Vaillant starts €100 cheaper (€3,199 vs €3,299 for the Specialized Tarmac SL7).
- Our verdict scores the Radon Vaillant higher overall: 77/100 vs 71/100.
- The Radon Vaillant's lightest build is 1.02 kg lighter (7.25 kg vs 8.27 kg).
- The Radon Vaillant comes in 5 sizes, the Specialized Tarmac SL7 in 7.
Radon Vaillant
Specialized Tarmac SL7
| RadonVaillant | SpecializedTarmac SL7 | |
|---|---|---|
| Overview | ||
| Brand | Radon | Specialized |
| Build | Vaillant 10.0 | Tarmac SL7 Sport - Shimano 105 |
| Build notes | Liquid Red over UD carbon with deep black. Radon weighs the smallest size without pedals. On 6 Oct 2026 Radon listed it at €3,999 against the €4,499 UVP. | Colours: Gloss Oasis Tint Silver Dust (US), Gloss Black (Germany), Gloss White. Not listed on Specialized's UK store. Weight of a painted production bike as pictured. |
| Price (MSRP) | €4,499€4,499€4,499 | €3,299$3,300€3,299 |
| Bike weight | 7.25 kg16 lb | 8.27 kg18.2 lb |
| Weight measured on size | XS | 56 |
| Model year | 2026 | 2021 |
| Generation | 2024 version | SL7 |
| Launched | 2024-03 | 2020-07 |
| Newer generation | — | SL8 (2023) |
| Discipline | Aero road | Aero road |
| UCI legal | Not stated | Not stated |
| Verdict (out of 100) | ||
| Overall score | 77 | 71 |
| Aero | 72 | 58 |
| Frame | 70 | 60 |
| Components | 74 | 55 |
| Fit | 68 | 82 |
| Practicality | 66 | 76 |
| Price | 99 | 98 |
| Weight | 91 | 71 |
| Frame & fork | ||
| Frame material | Carbon (UD carbon visible under the paint on the 9.0 and 10.0) | FACT 9r Carbon |
| Fork material | Full carbon | FACT Carbon |
| Frame weight | — | 1,010 g2.23 lb |
| Weight measured on | — | Frame 1,010 g as stated by Specialized on the Tarmac SL7 Sport product page |
| Max system weight | 115 kg253.5 lb | — |
| Frame sizes | XS, S, M, L, XL | 44, 49, 52, 54, 56, 58, 61 |
| Colours | Liquid Red / deep black (10.0), UD carbon / deep black (9.0), Quick / deep black (8.0) | Gloss Oasis Tint Silver Dust, Gloss White, Gloss Black (varies by region) |
| Also available as | — | Tarmac SL9 (FACT 10r) and S-Works Tarmac SL9 (FACT 12r), the current generation |
| Compatibility & standards | ||
| Brake type | Hydraulic disc, flat mount | Hydraulic disc, flat mount |
| Wheel size | 700c | 700c |
| Max tire width | — | 32 mm |
| Bottom bracket standard | Press-fit (Shimano SM-BB71-41B or SRAM DUB Road Pressfit as fitted) | BSA threaded, 68 mm |
| Front axle | 100 mm hub spacing | 12x100 mm thru-axle |
| Rear axle | 142 mm hub spacing | 12x142 mm thru-axle |
| Front derailleur mount | Braze-on | — |
| Cable routing | Internal, through the one-piece cockpit | Internal (Clean Routing) |
| Fit & adjustability | ||
| Cockpit | One-piece carbon bar and stem with internal cable routing (Radon 'Vaillant Aero Carbon') | — |
| Seatpost type | Radon Vaillant carbon seatpost shaped to the frame, 350 mm | S-Works Tarmac Carbon seatpost, 20 mm offset, Tarmac integrated wedge |
| Fit notes | — | Seven sizes from 44 to 61 cm in the geometry chart; the US store offers 44-58 and the German store 44-61. Stock bar width 360 mm (44) to 440 mm (58-61), stem 70 mm (44) to 110 mm (58-61), crank 165 mm (44-49) to 175 mm (58-61). |
| Aerodynamics | ||
| Tube profile | — | FreeFoil-shaped tubes, dropped seatstays |
| Travel, maintenance & warranty | ||
| Headset bearings | IS52/IS52 | — |
| Frame warranty | 5-year crash replacement on carbon frames from the date of purchase (original owner, in addition to the statutory warranty) | — |
| Sold via | Direct online through Bike-Discount, delivered locally with Radon service partners | Specialized retailers and specialized.com |
| Drivetrain | ||
| Groupset | SRAM Force AXS E1 | Shimano 105 R7100 |
| Launched | 2025 · current generation | 2023 · current generation |
| Speeds | 12-speed | 12-speed |
| Electronic | Yes | No |
| Wireless | Yes | — |
| Drivetrain | 2x | 2x |
| Shifters | SRAM Force AXS E1 | — |
| Notes | Combined shift and hydraulic brake levers | — |
| Crankset | SRAM Force AXS E1 Power Meter | Shimano 105 R7100 |
| Chainrings | 50/37 | 52/36 |
| Crank lengths available | — | 165 mm (44-49), 170 mm (52), 172.5 mm (54-56), 175 mm (58-61) |
| Spindle | DUB | — |
| Material | Carbon | — |
| Power meter | SRAM Force AXS E1 Power Meter | — |
| Launched | 2025 · current generation | — |
| Type | Spider | — |
| Bottom bracket | SRAM DUB Pressfit | Shimano Threaded BSA |
| Standard | Press-fit road | BSA threaded, 68 mm |
| Front derailleur | SRAM Force AXS E1 | Shimano 105 R7100 |
| Notes | — | Braze-on |
| Rear derailleur | SRAM Force AXS E1 | Shimano 105 R7100 |
| Cassette | SRAM Force XG-1270 | Shimano 105 R7100 |
| Range | 10-36 | 11-34 |
| Speeds | 12-speed | 12-speed |
| Chain | SRAM Force E1 | Shimano CN-M7100 |
| Notes | — | SLX M7100 chain |
| Brakes | ||
| Brake calipers | SRAM Force AXS E1 | Shimano 105 |
| Type | Hydraulic disc, flat mount | Hydraulic disc |
| Rotors | SRAM Paceline | — |
| Front rotor | 160 mm | — |
| Rear rotor | 160 mm | — |
| Mount | Center Lock | — |
| Wheels & tires | ||
| Wheelset | Newmen Streem A.49/A.54 | DT Swiss R470 |
| Internal rim width | 24 mm | 20 mm |
| Material | Carbon | Aluminium |
| Tubeless ready | — | Yes |
| Hubs | — | Specialized sealed-bearing thru-axle hubs, Centerlock, 24H |
| Spokes | — | DT Swiss Champion 14G stainless steel, brass nipples |
| Notes | 1,440 g per set, as stated by Radon; 100/142 mm hubs | — |
| Tires | Continental Grand Prix 5000 S TR | Specialized Turbo Pro |
| Tire width | 28 mm | 26 mm |
| Cockpit | ||
| Handlebar | Radon Vaillant Aero Carbon | Specialized Shallow Drop |
| Type | One-piece bar and stem | Drop bar |
| Integrated stem | Yes | — |
| Widths available | — | 360 mm (44), 380 mm (49), 400 mm (52), 420 mm (54-56), 440 mm (58-61) as fitted by size |
| Bar reach | — | 70 mm |
| Bar drop | — | 125 mm |
| Cable routing | Internal | — |
| Material | Carbon | 6061 alloy |
| Notes | — | 31.8 mm clamp |
| Stem | — | Specialized Tarmac integrated stem |
| Stem length | — | 70 mm (44), 80 mm (49), 90 mm (52), 100 mm (54-56), 110 mm (58-61) |
| Notes | — | 6 degrees |
| Headset | IS52/IS52 | — |
| Saddle & seatpost | ||
| Saddle | Selle Italia SLR Boost Kit Carbonio Superflow | Specialized Power Sport |
| Widths available | — | 155 mm (44-52), 143 mm (54-61) |
| Rails | Carbon | Steel |
| Seatpost | Radon Vaillant Carbon Seatpost | Specialized S-Works Tarmac Carbon Seatpost |
| Offset / setback | — | 20 mm |
| Material | Carbon | FACT carbon |
| Notes | 350 mm, shaped to the frame | 300 mm long (44-52), 380 mm (54-61); Tarmac integrated wedge binder |
| Bar tape | ACID RC 2.5 CMPT | Supacaz Super Sticky Kush |
| Included extras | ||
| Pedals | None included | — |
| Geometry (smallest – largest size) | ||
| Sizes | XS, S, M, L, XL | 44, 49, 52, 54, 56, 58, 61 |
| Stack | 517–599 mm20.4–23.6″ | 501–612 mm19.7–24.1″ |
| Reach | 374–404 mm14.7–15.9″ | 366–408 mm14.4–16.1″ |
| Seat tube angle | 72.8–74.8° | 73–75.5° |
| Head tube angle | 72–73.3° | 70.5–74° |
| Head tube length | 107–190 mm4.2–7.5″ | 99–204 mm3.9–8″ |
| Effective top tube | 515–590 mm20.3–23.2″ | 496–595 mm19.5–23.4″ |
| Seat tube length | 470–590 mm18.5–23.2″ | 433–545 mm17–21.5″ |
| Chainstay | 415 mm16.3″ | 410 mm16.1″ |
| Wheelbase | 976–1,020 mm38.4–40.2″ | 970–1,013 mm38.2–39.9″ |
| BB drop | 68–70 mm2.7–2.8″ | 72–74 mm2.8–2.9″ |
| BB height | — | 266–268 mm10.5–10.6″ |
| Fork length | — | 370 mm14.6″ |
| Fork offset | — | 44–47 mm1.7–1.9″ |
| Trail | — | 52–71 mm2–2.8″ |
| Front centre | — | 572–613 mm22.5–24.1″ |
| Standover | — | 723–834 mm28.5–32.8″ |
| Wheel size | 700c | 700c |
| Crank length | — | 165–175 mm6.5–6.9″ |
| Stem length | — | 70–110 mm2.8–4.3″ |
| Handlebar width | — | 360–440 mm14.2–17.3″ |
Geometry overlay
Pick a size for each bike to see frames and arm-pad ranges on top of each other.
Drawn to scale (how to read it).