B
BHRS1
road
01
Origin
The RS1 was BH's attempt to synthesise two worlds that road cyclists argued were incompatible: aerodynamic tube shapes and endurance comfort. By applying Kamm Tail profiles — tubes with a teardrop cross-section truncated at the back — BH matched the aerodynamic properties of their dedicated aero G8 race bike while keeping weight and compliance acceptable for long days. The ACR system, hiding all cables internally, was a practical innovation that also improved aerodynamics by eliminating exposed housing. Riders get a 32 mm tire clearance that no pure aero race bike of its era offered.
02
Specifications
- Frame
- Monocoque carbon, HCIM (Hollow Core Internal Moulding); Kamm Tail tube shaping for aerodynamic cross-section; ACR system for 100% internal cabling; BB386EVO BB; 12 mm thru-axle with hidden tool-free levers; tire clearance up to 32 mm; short chainstays for reactive feel; seatpost clamp integrated into downtube
- Drivetrain
- 2×11 or 2×12 depending on build year and tier: Shimano 105 Di2, Ultegra Di2, or Ultegra mechanical; also available with SRAM Force AXS
- Brakes
- Hydraulic disc, flat mount
- Wheels
- 700c, tubeless-compatible; Vision Team35 (entry) or Vision SC60 (mid/upper)
03
The verdict
+Strengths
- Kamm Tail aerodynamics match dedicated aero bike performance in real-world conditions
- ACR full-internal cabling is clean, aerodynamic, and cable-protecting
- 32 mm tire clearance is generous for an aero-influenced road platform
−Weaknesses
- BB386EVO press-fit BB requires quality installation to avoid creaking
- Aero tube profiles make crash repair or carbon assessment more complex
- Not as lightweight as the Ultralight line for pure climbing
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Tags
05
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