Ridley Helium SLX
Racers who want Ridley without Noah's aero. Fenix if you need endurance stack.
Ridley's lightweight race bike. Belgian race fit, the climbing Ridley versus Noah aero. A long-running nameplate — compare years.
Racers who want Ridley without Noah's aero. Fenix if you need endurance stack.
Ridley's lightweight race bike. Belgian race fit, the climbing Ridley versus Noah aero. A long-running nameplate — compare years.
Racers who want Ridley without Noah's aero. Fenix if you need endurance stack.
Ridley's lightweight race bike. Belgian race fit, the climbing Ridley versus Noah aero. A long-running nameplate — compare years.
Racers who like Cannondale's handling and want the serviceable frame. Synapse is the taller sibling; SuperX is the CX/gravel race cousin.
The fourth-generation EVO keeps the third generation's geometry but goes lighter, slipperier, and back to a threaded BSA bottom bracket. Same fit as the 2020–2022 bike, easier to live with.
Racers who want Cervelo geometry without halo pricing. Compare stack/reach to R5.
The mid-tier Cervelo race bike: less exotic than R5/S5, still a race position. A lot of riders' first Cervelo that actually fits like a race bike.
| Measurement |  RidleyHelium SLX 2023 | RidleyHelium SLX 2022 |  CannondaleSuperSix EVO 2025 |  CerveloSoloist 2022 |
|---|---|---|---|---|
| Stackmm | 550 | 550 | 561+11 | 566+16 |
| Reachmm | 390 | 390 | 384−6 | 392+2 |
| Head tube angle° | 73.0 | 73.0 | 73.0 | 73.0 |
| Seat tube angle° | 73.0 | 73.0 | 73.7+0.7 | 73.0 |
| Chainstaymm | 405 | 405 | 408+3 | 410+5 |
| Wheelbasemm | 992 | 992 | 985−7 | 995+3 |
| BB dropmm | 70 | 70 | 72+2 | 72+2 |
| BB heightmm | — | — | — | — |
| Standovermm | — | — | — | — |
| Part | Helium SLX M | Helium SLX M | SuperSix EVO 54 | Soloist 56 |
|---|---|---|---|---|
| Stem | 100 mm | 100 mm | 100 mm | 100 mm |
| Bar | 420 mm | 420 mm | 420 mm | 420 mm |
| Crank | 172.5 mm | 172.5 mm | 172.5 mm | 172.5 mm |
The Helium SLX is Ridley's only pro-level bike to come with rim brakes; the aero bike and endurance road model run discs. Advertisement - Continue Reading Below.
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