SEKA SPEAR ROAD DISC FRAMESET
The Ultimate All-Rounder // Wind-Tunnel Optimized Speed
An All-Rounded Bike That Is Even Faster Than An Aero Bike
Developed in tandem with the UK-based AeroCoach team and refined through 280,000 wind tunnel test data points, you simply cannot find a more aerodynamic all-rounded bike. The SEKA Spear balances signature weight savings with an aggressive aerodynamic advantage, meaning zero compromises whether you are pushing the pace on flat sectors or tackling steep mountain climbs.
Revolutionary Wind Eye Design
The distinctive Wind Eye design on the seat stay optimizes trailing airflow and cleans up the heavy turbulence spinning off the rear wheel. This structural breakthrough saves a verified 2.66 Watts at 40 kph compared to standard solid seat stay configurations. Beyond cutting clean through head-winds, the physical architecture acts as a micro-damper to relieve road feedback—delivering an impressive 23% increase in vertical compliance over the SEKA Exceed frameset for sustained comfort on rough roads.
Wind Tunnel Validation: The SEKA Spear was explicitly benchmarked side-by-side with the Specialized Tarmac SL8 inside Silverstone's wind tunnel using a standardized configuration consisting of a Dura-Ace Di2 groupset, Zipp 404 wheelset, and 28c Pirelli tubeless tires.
Impressive Weight & Materials Architecture
Tipping the scales at a mere 685g for the raw RDC version, this lightweight profile is built from a calculated matrix of 6 distinct composite materials layered across 350 complex carbon sheets. Utilizing premium TeXtreme and high-modulus Asphalt base carbon fiber combined with proprietary in-house carbon weaving techniques, SEKA breaks through the typical performance ceiling to deliver world-class stiffness-to-weight responses.
All-New Rapier Integrated Handlebar
Tailor-made explicitly for the Spear frameset profiles, the Rapier handlebar marks a 5.2% increase in steering stiffness while managing to shed 20g over previous generation configurations. The standard 375mm-100mm racing format registers a minimal featherweight footprint of just 310g.
- Narrow Hood Profile: A subtle 5mm reduction in overall hood width shifts your forearms into a highly aerodynamic, relaxed, and wind-cheating posture.
- Precision Specs: Features a aggressive -6 Degree Stem layout, compact 76mm Reach, and ergonomic 127mm Drop.
- Internal Integration: Updated internal cable routing pathways allow for effortless, clean mechanics and a completely hidden cockpit profile.
- Flared Racing Drops: Widened drops add high-leverage compliance and maximum control during full-gas out-of-the-saddle sprints.
Technical Specifications
| Bottom Bracket | BSA Threaded 68mm |
| Headset Bearings | 49.5 x 40.5 x 6.5 x 45.0 ｜ 45° |
| Max Tire Clearance | Up to 32mm width |
| Frame Weights (Raw) | • RDC Version: Ultra-lightweight 685g • STD Version: High-performance 780g |
| Steerer Diameter | 28.6mm (1-1/8 inches) |
| Seatpost Matrix | Available lengths: 300mm or 380mm // Offset options: 0mm or 15mm setbacks |
| Saddle Clamp Fit | 7 x 11mm rails |
| Warranty System | Limited lifetime warranty coverage |
Product Architecture Highlights
- Aerodynamic Efficiency Breakthrough: Slashes a full 6 Watts total off the power drag baseline compared to the preceding SEKA Exceed chassis profiles.
- 7 Dual-Matrix Geometry Profiles: Designed around 5 regular geometry choices (XS, S, M, L, XL) combined with 2 distinct racing geometry variations (MR, LR).
- Unparalleled Bike Fitting Flexibility: Offering 19 independent integrated cockpit configurations alongside 2 optional setback adjustments, the layout gives modern riders 2 to 3 tailored structural fits to suit specific biomechanical riding styles effortlessly.