Compare
Ridley Dean Fast Disc vs Specialized S-Works Shiv TT Disc
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 Ridley Dean Fast Disc starts €1,000 cheaper (€4,999 vs €5,999 for the Specialized S-Works Shiv TT Disc).
- Tire clearance: up to 32 mm on the Ridley Dean Fast Disc vs 28 mm on the Specialized S-Works Shiv TT Disc.
- The Ridley Dean Fast Disc comes in 3 sizes, the Specialized S-Works Shiv TT Disc in 4.
Ridley Dean Fast Disc
Specialized S-Works Shiv TT Disc
| RidleyDean Fast Disc | SpecializedS-Works Shiv TT Disc | |
|---|---|---|
| Overview | ||
| Brand | Ridley | Specialized |
| Build | Dean Fast Disc frameset | S-Works Shiv TT Disc Module |
| Build notes | Ridley sells the Dean Fast as a frameset only (frame, fork, Forza TTT basebar and Forza Aero seatpost); colours are chosen in Ridley's configurator. | Frameset module: frame, fork, Shiv TT integrated bar/stem aerobar, basebar and seatpost. A second colourway (Gloss Ruby Metallic) is listed with a 340 mm basebar width instead of 400 mm. |
| Price (MSRP) | €4,999€4,999£4,499 | €5,999$6,150£5,999 |
| Bike weight | — | 2.69 kg5.9 lb |
| Weight measured on size | — | M |
| Model year | 2024 | 2026 |
| Generation | Dean Fast (disc, 2023) | Shiv TT Disc (first disc-brake Shiv TT) |
| Launched | 2023-08 | 2019-07 |
| Discipline | Time trial | Time trial |
| UCI legal | Yes | Yes |
| Verdict (out of 100) | ||
| Aero | 86 | 80 |
| Frame | 84 | 85 |
| Hydration & storage | 45 | 38 |
| Fit | 48 | 70 |
| Practicality | 62 | 70 |
| Frame & fork | ||
| Frame material | Carbon (Ridley Elite Series, Toray 60T/50T/30T/24T mix) | Carbon (S-Works FACT 11r) |
| Fork material | Carbon (Noah Fast Disc fork, 60T-40T-30T HM UD, in-mould F-Surface) | Carbon (S-Works FACT) |
| Frame weight | 1,250 g2.76 lb | — |
| Fork weight | 460 g16.2 oz | — |
| Frameset weight | — | 2,690 g5.93 lb |
| Weight measured on | Size M, Ridley claim reported by BikeRadar; basebar 341 g | Module (frame, fork, cockpit, seatpost), size M, production painted |
| Frame sizes | S, M, L | XS, S, M, L |
| Colours | — | Gloss Glacial Metallic / Red To Gold Pearl Edge Fade / Metallic White Silver; Gloss Ruby Metallic |
| UCI frame approval | UCI-approved as 'Dean Fast Disc' (frame and fork code RIDLEY-DEAN), approved 01.05.2023; the list (version 2026.10.02) names only size M (1) | Listed on the UCI approved framesets list as 'Shiv TT' (frame and fork code SPE-SHIV-TT), approved 22.03.2019, sizes XS to L (4) (UCI list version 2026.10.02) |
| Compatibility & standards | ||
| Brake type | Hydraulic disc (flat mount) | Flat-mount disc |
| Wheel size | 700c | 700c |
| Max tire width | 32 mm | 28 mm |
| Bottom bracket standard | PF30 (press-fit) | BSA threaded |
| Front axle | 12x100 thru-axle | 12x100 thru-axle |
| Rear axle | 12x142 thru-axle | 12x142 thru-axle |
| Drivetrain compatibility | Electronic groupsets only; Universal Derailleur Hanger (UDH) | Electronic only |
| Mechanical shifting possible | No | No |
| 1x compatible | Yes | Yes |
| Max chainring | 60T | — |
| Front derailleur mount | Removable bolt-on hanger with two clamp options (for 53-40T or 60-47T rings); a cover cap replaces it on 1x builds | Removable derailleur hanger on the seat tube (can be removed for 1x) |
| Cable routing | Fully internal | Internal, electronic-only |
| Hydration & storage | ||
| Integrated hydration | No | No |
| Integrated storage | No | No |
| Bottle mount locations | Down tube, with two cage positions: a higher one for training access and a lower one for racing | — |
| Fit & adjustability | ||
| Aerobar system | Forza TTT integrated basebar (110 mm stem, 400 mm c-c) supplied with the frameset; the stem drops into the head tube | Shiv TT integrated one-piece bar/stem aerobar with Shiv TT basebar |
| Pad stack adjustment range | — | Pad holder stack 535-680 mm (XS), 545-690 mm (S-L) |
| Pad reach adjustment range | — | Pad reach 436-464 mm (XS), 448-476 mm (S), 463-491 mm (M), 478-506 mm (L) |
| Seatpost type | Forza Aero seatpost (350 mm) | S-Works Venge aero seatpost (FACT carbon, Di2-compatible) |
| Aerodynamics | ||
| Manufacturer aero claims | — | Specialized claims it is as fast in the wind tunnel as the Shiv TT it replaced while about 500 g lighter. |
| Testing method | CFD simulations optimised for about 55 km/h, then validated in the Bike Valley wind tunnel | — |
| Tube profile | F-Tubing (truncated NACA profiles) with F-Surface Plus grooves on frame and fork; uses the UCI 8:1 tube ratio and compensation triangles | Truncated airfoil tubes from Specialized's FreeFoil Shape Library |
| Travel, maintenance & warranty | ||
| Travel & packing | — | On Shimano Di2 builds the seatpost only comes out after removing the EW-RS910 junction and unplugging the 1200 mm wire that runs down the seat tube. For bikes that travel often, Specialized suggests replacing that wire with a 700 mm and a 500 mm wire joined by an in-line EW-JC200 junction. |
| Headset bearings | — | Specialized Shiv TT Disc headset: upper bearing 38 x 27.2 x 6.3 mm, lower bearing 45.35 x 35 x 7.3 mm |
| Derailleur hanger | UDH (SRAM Universal Derailleur Hanger); the front derailleur hanger is removable and can be swapped for a cover on 1x builds | Proprietary: Specialized MY18 road disc thru-axle hanger (S182600001); removable front derailleur hanger (S202600001) |
| Proprietary parts | Forza TTT integrated basebar/stem, Forza Aero seatpost, removable front-derailleur hanger and cover | — |
| Frame warranty | Lifetime warranty after registration (Ridley) | — |
| Sold via | Ridley dealers and online ordering with pick-up at a dealer | Specialized online (ship to home or in-store pickup) and Specialized retailers |
| Cockpit | ||
| Aerobar system | — | Specialized Shiv TT integrated bar/stem aerobar |
| Basebar | Ridley Forza TTT integrated basebar | Specialized Shiv TT Basebar with integrated stem cover |
| Basebar width | 400 mm | 400 mm |
| Weight | 341 g12 oz | — |
| Notes | Integrated 110 mm stem | — |
| Saddle & seatpost | ||
| Seatpost | Ridley Forza Aero | Specialized S-Works Venge aero seatpost (2019), FACT carbon |
| Notes | 350 mm length | — |
| Geometry (smallest – largest size) | ||
| Sizes | S, M, L | XS, S, M, L |
| Stack | 495–518 mm19.5–20.4″ | 485–495 mm19.1–19.5″ |
| Reach | 373–411 mm14.7–16.2″ | 378–420 mm14.9–16.5″ |
| Pad stack min | — | 535–545 mm21.1–21.5″ |
| Pad stack max | — | 680–690 mm26.8–27.2″ |
| Pad reach min | — | 436–478 mm17.2–18.8″ |
| Pad reach max | — | 464–506 mm18.3–19.9″ |
| Seat angle min | 74.5° | 74.5–75.8° |
| Seat angle max | 74.5° | 74.5–75.8° |
| Head tube angle | 71.5–72° | 71–72° |
| Head tube length | 90–110 mm3.5–4.3″ | 90–95 mm3.5–3.7″ |
| Effective top tube | 510–555 mm20.1–21.9″ | 512–546 mm20.2–21.5″ |
| Seat tube length | 500–540 mm19.7–21.3″ | 504–564 mm19.8–22.2″ |
| Chainstay | 405 mm15.9″ | 410 mm16.1″ |
| Wheelbase | 964–1,001 mm38–39.4″ | 972–1,008 mm38.3–39.7″ |
| BB drop | 75 mm3″ | 70–72 mm2.8–2.8″ |
| BB height | — | 269–270 mm10.6–10.6″ |
| Fork length | — | 363 mm14.3″ |
| Fork offset | — | 45 mm1.8″ |
| Trail | — | 63–70 mm2.5–2.8″ |
| Front centre | — | 573–609 mm22.6–24″ |
| Standover | 763–786 mm30–30.9″ | 769–802 mm30.3–31.6″ |
| Wheel size | 700c | — |
| Stem length | 110 mm4.3″ | 75 mm3″ |
| Basebar width | 400 mm15.7″ | — |
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).