WCB-R-309 Road Bike Frame
Meet the product
The WCB-R-309 Carbon Road Aero Bike Frame is a performance-focused road frame designed for riders who prioritize aerodynamic efficiency, responsive handling and a clean integrated appearance. Constructed from full carbon fiber with UD carbon weave, the frame provides a lightweight and rigid platform for high-performance road bike builds.
The WCB-R-309 is available in five frame sizes: 49, 52, 54, 56 and 58 cm, with progressive stack and reach dimensions to accommodate different rider requirements. Its geometry maintains a consistent 72 mm bottom bracket, 406 mm rear centre and 45 mm fork offset across all sizes.
Material:Toray prepreg
Headset size: top 1-1/2 down 1-1/2
Seatpost: aero type
BB:BSA/T47(The width of T47 is 68mm)
Size: 49/52/54/56/58
Brake Type: Flat mount disc brake
Maximum tyre size: 700*45Ｃ
Maximum for single speed crankset: 46T;
Maximum for double speed crankset: 50-34T
Rear spacer:142*12mm ( Flat mount disc brake)
Front spacer: monocoque fork 100*12mm ( Flat mount
disc brake ￠140/￠160 interchange)
Cables routing: Fully integrated cable routing
Frame Specifications
| Version | Modd | Size | Weight | Rigidity | ||
|---|---|---|---|---|---|---|
|
Headtube (Light Weight Version 110 ↑) (Normal Weight Version 115 ↑) |
Bottom Bracket(130↑) |
Dropout Bilateral (40 ↑) |
||||
| Normal Weight Version | 340 | 49, 52, 54, 56, 58 | TDB | 49: 115 mm 52: 125 mm 54: 145 mm 56: 165 mm 58: 190 mm | 153 | 40 |
| Test Items |
Drop Impact Test |
Frost Forward Test |
Back Forward Test |
Disc Brake Fatigue Test |
Verceal Forca Fatigur Test of Frama Sasstulog |
Horicoatal Force Fatigun Test of Frama |
Patlgun Test of Prame Treading Forea |
SeatTube Strength Test |
Headtube Strength Test |
Bortcon Bracket Compressed on Tert |
Vibration Fatigue Load Test |
|---|---|---|---|---|---|---|---|---|---|---|---|
| pass | pass | pass | pass | pass | pass | pass | pass | pass | pass | pass | |
| EN ralced to 230 height |
EN raked to 200 height |
200 height | Standard 241000 Bmex for sach 900N/200N |
EN raindord 122bgf/26000 times |
EN raindard +122.4bgf/-5 1.39gf 60000 times |
122bgf100000 times |
300kgf abore | 300kgf1 | 300kgf1 | EN standard STradbn/L/162 2.50g/14T:10k & 20000 times |
GEOMETRY DIAGRAM
Key frame measurements that
Reviews
Excellent quality
Solid frame, excellent build quality, and shipping was faster than expected. Highly recommend.
2026-09-14Great value
Solid frame and components for the price. Sizing ran slightly small, so double-check the size chart.
2026-07-28Exceeded expectations
The product quality keeps improving. Customer support was also very responsive.
2026-08-05Highlight Features
Lightweight Construction
High-quality lightweight construction designed for excellent performance.
Performance Geometry
Balanced geometry for responsive handling and riding comfort.
Premium Components
Carefully selected components provide reliability and performance.
