WCB-R-439 Road Bike Frame
Meet the product
The WCB-R-439 is a performance-oriented road bike frame designed around balanced geometry, responsive handling, and efficient riding performance. Its carefully developed frame geometry provides a combination of stability, control, and an efficient riding position for road cycling applications.
Available in multiple frame sizes, the WCB-R-439 geometry has been developed to provide consistent fit and handling characteristics across the size range. The frame geometry includes optimized stack and reach dimensions, head tube angles, seat tube angles, and wheelbase measurements for a balanced road riding setup.
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
WCB-R-439 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 | TBD | TBD | 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.
