Ultra-light carbon spokes: Ti.C-2.1g, Al.C-3.5g for road/MTB
High-Strength Lightweight Carbon Spokes: Ti.C-2.1&Al.C-3.5
Traditional steel spokes come with drawbacks including higher weight, noticeable flex, and progressive fatigue deformation over time. Many riders switch to carbon spokes to lower unsprung wheel mass, boost wheel responsiveness, and achieve a stiffer, more precise wheelset feel. Compared with conventional steel spokes, carbon-fiber spokes deliver snappier acceleration, clearer cornering feedback and improved vibration damping for smoother long-distance rides.
Material & Construction: Two Directional Fiber Layups
| Model | Shaft Material | Nipple Material | Measured Weight |
|---|---|---|---|
| Ti.C-2.1 | Carbon fiber | Titanium alloy | 2.1g |
| Al.C-3.5 | Carbon fiber | Aluminum alloy | 3.5g |
Actual weight test of 290mm Ti.C-2.1g carbon spokeSpoke length = 290mm. This 2.1g model is the top pick for riders pursuing extreme performance.
Weight gap between carbon spokes and traditional steel bike spokes
Spoke length: 290 mm. Traditional steel spokes weigh approximately 5.5 g apiece. Even the 3.5 g version delivers a 30-40 % weight reduction.
Both spokes are manufactured using a specialized molding process to prevent fiber breakage during production. A resin-coated layer is applied to the surface for protective shielding, maintaining optimal condition for long-term use.
Additionally, the unified one-piece molded structure eliminates loose layers and internal gaps, ensuring even force distribution across the full length of each spoke. This precision-engineered manufacturing process helps avoid common carbon-spoke defects, including delamination, surface cracking and inconsistent rigidity.
Measured Lateral Stiffness (Resistance to Wheel Wobble)
| Model | Lateral Stiffness (N/mm) | Test Condition |
|---|---|---|
| Ti.C-2.1 | 784 N/mm | Force applied perpendicular to shaft mid-span, simply supported ends |
| Al.C-3.5 | 1176 N/mm | Same as above |
Higher values mean stronger resistance to lateral deformation.
Optimized carbon-fiber ply arrangements and lay-up processes give the Al.C-3.5 g its higher lateral stiffness of 1176 N/mm. It keeps the wheelset stable under side-loading and performs reliably for daily commuting, recreational road rides and general mountain biking. It copes well with frequent direction shifts and minor impacts, delivering secure, confident handling for riders of all skill levels.
Tensile Strength & Fatigue Resistance
Tensile strength test curves for Ti.C-2.1 carbon spoke models
The Ti.C-2.1g achieves a tensile strength of 326 kgf. It resists stretching and bending under high tension, maintaining consistent stiffness with minimal power loss during sprints and steep climbs.
Both variants have passed rigorous durability tests. During regular riding, spokes are subject to repeated vibration and cyclic loads, which can wear out conventional components. Our unique fiber layup and structural design disperse stress effectively. Even after thousands of kilometers of riding, fiber damage or performance degradation is unlikely to occur. Excellent fatigue resistance extends service life and reduces long-term maintenance costs.
Application Guide: Suitable for Road & Mountain Bike Wheelsets
The Al.C-3.5g features higher tensile strength and structural rigidity at 500 kgf. It reliably withstands continuous pedaling forces and minor impacts, maintaining stable mechanical properties over extended use.
Based on the test data above, both models are compatible with road and mountain bikes, though their individual strengths suit different riding requirements.
Ti.C-2.1g
Best for: climbing wheelsets, competition road bikes, lightweight gravel bike setups Reasoning: Ultra-low weight, moderate lateral stiffness and direct riding feedback Not recommended for heavy-impact scenarios including big drops and rocky enduro trails
Al.C-3.5g
Best for: all-mountain bikes, trail bikes, e-MTB, endurance road bikes and daily-training wheels Reasoning: Greater structural strength and extended service life. It delivers better cost-performance than the titanium-nipple version, while still being 30-40 % lighter than standard steel spokes.
Both designs work with mainstream hub interfaces (2.0 mm / 2.3 mm / 2.5 mm optional). Please choose the correct spoke length based on your hub drilling specifications and wheel-building needs.
