The OMEGA 5021 is built with safety at its core, using a 21-hole 2:1 lacing pattern to optimize spoke tension balance while maintaining high stiffness and durability at an ultra-lightweight level. Its exclusive 21-sided rim design improves stress distribution and aerodynamic stability, while in-mold construction enhances carbon strength. A high-strength hub with a planetary ratchet system ensures fast, smooth engagement, delivering a refined balance of lightweight performance, strength, and stability.
The OMEGA 5021 wheelset is designed with 「Safety」 as its primary objective.
Deconstruct > Rethink > Reengineer
The exclusive 21-sided inner rim design is not merely a visual innovation; it represents a superior structural reconstruction. By rethinking spoke configuration, the conventional 24 spokes commonly found on road wheelsets have been reduced to 21, combined with a 2:1 lacing pattern — 14 spokes on the drive side and 7 on the non-drive side — to improve left-right tension balance. This allows the wheelset to achieve extreme lightweight performance while maintaining excellent stiffness and durability.
Ultimate Balance of Lightweight and Stiffness
Built around lightweight optimization, the 21-hole 2:1 spoke configuration precisely balances left and right tension while ensuring overall rigidity and structural stability.
Stress-resistant Innovative Geometric Rim:
The exclusive 21-sided inner rim geometry and quasi-triangular cross-section effectively disperse localized stress and enhance overall structural strength.
In-mold Spoke Hole Forming Technology:
Replacing traditional drilling processes, this method preserves continuous carbon fiber integrity, significantly reduces structural stress, and improves fatigue resistance.
VINTY PAi 𝝅 Flash Hub：
The hub body is cold-forged from high-strength 6061 aluminum alloy. The axle and ratchet are made from high-strength 7075 aerospace-grade aluminum alloy. Internally, it features an innovative modular 36-tooth planetary ratchet system, providing immediate, smooth, and highly stable pedaling engagement.
Spoke Safety Locking System:
Full carbon fiber spokes are used. The drive side adopts a T-head through design to prevent twisting and pull-out, while the non-drive side (radial side) utilizes a dual-threaded connection design to ensure precise locking and excellent tensile performance.
SPEC
General
Weight (± 3%)1230 g
Front / Rear Weight565 / 665 g
Brake TypeDisc Brake
Tubeless ReadyYes
Clincher (inner-tubes)Yes
Maximum Rider Weight110 kg
Rim
Material100% Carbon Fiber
Height50 mm
External Width30 mm
Internal Width23 mm
Recommended Tire Width700 x 26 ~ 35c Best Aerodynamics with 28c
Maximum PSI / Bar120 / 8.3
Outer Spoke HolesYes ( Rim Tape Required )
Hub
ModelVINTY PAi 𝝅
TypeStraight Pull
Break InterfaceCenter Lock
Axle System12 x 100 / 12 x 142 mm
Freehub SystemOne Unified Ratchet
BearingsSteel
Cassette BodySHIMANO 11-12s, SRAM XDR 12s
Spoke
ModelVINTY CB-4
Front / Rear Count21 / 21
Front LengthL 276 / R 260 mm
Rear LengthL 260 / R 275 (Driver Side) mm
MaterialCarbon
NippleExclusive
Innovative Geometry Carbon Rim Expert
Concept:
Geometric Airflow Guidance (GAG)
Engineering Logic:
The 21-sided polygonal ridges act as vortex generators. As crosswinds encounter the rim, these precise edges trigger micro-turbulences within the boundary layer. This mechanism delays flow separation and helps the airflow “wrap” more effectively around the leeward side of the rim, significantly reducing lateral drag and enhancing handling stability.
Stress-Resistant Geometric Structure
The exclusively developed 21-sided inner rim geometry perfectly corresponds to the 21 spokes, effectively dispersing the localized stress borne by each individual spoke hole during wheel building and significantly reducing the risk of stress concentration.
The quasi-triangular cross-section substantially enhances the overall structural strength and safety of the entire rim without deliberately increasing weight, achieving an optimal balance between lightweight performance and durability.
In-Mold Angled Spoke Hole Technology
Unlike traditional mechanical drilling processes, the rim utilizes advanced in-mold angled spoke hole forming technology. The spoke holes and their precise angles are formed directly during the molding stage, ensuring perfect alignment between the spoke nipples and spokes.
This design fully preserves the structural continuity of the carbon fiber, effectively reducing internal stress within the material and significantly enhancing the overall fatigue resistance of the rim.
VINTY PAi 𝝅 Flash Hub
Featuring a hub body, axle, and freehub machined from monoblock 7075 aluminum alloy, this hub utilizes high-grade steel ratchets. Inside, an innovative, modular 48-tooth planetary ratchet system ensures immediate, smooth, and exceptionally stable power transfer.
Collaborating with Hubsmith, VINTY developed the “PAi 𝝅” road center-lock disc hub, featuring a hub body constructed from high-strength 7075 aluminum alloy. The carbon steel uniball seats are precision-machined using 4.5-axis angular drilling. The axle, end caps, and freehub are engineered from the same aerospace-grade 7075 alloy, ensuring an optimal balance of extreme lightweight performance and structural durability.
High-Efficiency Drive System
Internally, the hub utilizes a front-2 and rear-4 steel bearing configuration, paired with a 48-tooth integrated planetary ratchet system. This setup delivers an ideal balance between high-performance power transfer and long-term durability, providing smooth, immediate pedaling engagement while simplifying routine maintenance. To guarantee reliability, the modular 48-tooth planetary ratchet system successfully passed a rigorous 100,000-cycle fatigue test.
Innovative Integrated One-Piece Ratchet Structure
Departing from conventional designs, the internal mechanism incorporates an innovative coil spring. Engineered with superior elasticity, it provides fully balanced engagement to deliver uniform, stable rebound force to the planetary ratchet—significantly enhancing hub durability and operational stability. Additionally, the pre-assembled integrated ratchet unit minimizes the risk of slippage caused by riding-induced deformation, while completely eliminating the risk of losing small components during disassembly and maintenance.
Award-Winning Technology
This innovative design utilized Hubsmith’s patented technology, which proudly earned the Taipei Cycle d&i awards 2026 Gold Winner.
The wheelset adopts a 21-hole design with a 2:1 lacing pattern — 14 spokes on the drive side and 7 on the non-drive side. This configuration effectively balances left and right spoke tension after wheel building, significantly enhancing overall structural stability and long-term durability.
To address the differing load characteristics on each side, a differentiated locking strategy is employed. On the drive side, which is subjected to greater torque forces, a T-head through-axle design is utilized. During wheel building and tension adjustment, this design effectively prevents excessive spoke twist. Under high-impact riding loads, it significantly reduces the risk of spoke pull-out, providing a level of safety far superior to traditional slot-in hub designs.
On the non-drive side (radial side), a dual-threaded spoke connection structure is adopted. This design delivers excellent tensile strength while ensuring long-term, precise, and reliable connection between the spokes and the hub.
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