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Custom Carbon Fiber Bicycle Frame
Home / Product / Special-shaped Parts / Sports Equipment / Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame
  • Carbon Fiber Bicycle Frame

Carbon Fiber Bicycle Frame

Carbon fiber bicycle frames consist of layers of carbon fiber (woven carbon fiber layers) embedded in an epoxy resin matrix. The carbon fiber gives it strength, and the resin binds it together. Most frames are made from multiple layers of carbon fiber/resin material (called "prepreg"), with different grades and directions taken into account at different locations in the frame.
Advantages:

  • High stiffness-to-weight ratio;
  • Enhanced Formability;
  • Capable of being molded into aerodynamic tubular profiles.
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Parameter
Makings - Carbon Fiber
Bending Strength MPa 700-900
Tensile Strength MPa 300-400
Compressive Strengths MPa 150-250
Modulus Of Elasticity GPA 200-300
Densities g/cm3 1.8
MONOCOQUE · HIGH MODULUS
Carbon Fiber Bicycle Frame
Monocoque construction using Toray T700, T800, and M40J carbon fiber prepreg with EPS internal molding. Frame weight range 850–1150 g (size M, disc brake version). Layup schedule engineered for anisotropic stiffness distribution: head tube lateral stiffness 120 N·m/° (EN 14781 standard), bottom bracket torsional stiffness 180 N·m/° under 50 N·m torque input. Dropout alignment tolerance ±0.5 mm, press-fit BB86 shell concentricity within 0.05 mm.
Weight (M)850–1150g
BB stiffness180 N·m/°
Fork offset43–48 mm
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Structural advantages
  • →Specific stiffness ratio: 105–120 kN·m/kg, exceeding aluminum 6061 (25 kN·m/kg) and steel (20–22 kN·m/kg) under equal mass.
  • →Vibration damping: Modal damping coefficient 0.025–0.035 at 50–200 Hz, reducing road chatter transmission to contact points.
  • →Impact resistance: Drop test performance per EN 14766: no structural fracture after 22 kg dropped from 450 mm height.
  • →Corrosion resistance: Unaffected by sweat, salt spray, or UV exposure (tested per ASTM B117, 500 hours).
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Geometric & layup data
Chainstay length405–425 mm (size dependent)
Head tube angle71°–73.5°
Bottom bracket drop65–75 mm
Fiber volume fraction58% – 65%
Number of plies (DT area)12–18 layers (0°/45°/90° orientation)
01
Mechanical validation
Fatigue test per ISO 4210-6: 100,000 cycles at 1,200 N load applied to pedals, no crack propagation. Head tube impact: 18 kN static load without failure.
02
Surface & finish
Matte UD, gloss twill, or raw carbon exposed finish. Clear coat thickness 40–60 μm, UV-stable with yellowing ΔE < 1.5 after 500 hours QUV.
03
Compatibility
Tapered head tube (1-1/8” to 1-1/2”), threaded BB86-92 or T47 bottom bracket, flat mount disc brake (160/140 mm rotor), thru-axle 12x100/12x142 mm.
⚙
Application segments
Road racing Endurance/Gran Fondo Gravel all-road Track cycling E-bike conversion (certified)
▸ Assembly & torque specifications
  • Stem faceplate bolts: 5–6 N·m (carbon assembly paste required on steerer tube)
  • Bottom bracket cups: 40–50 N·m (threaded) / press-fit requires Loctite 641
  • Disc brake caliper bolts: 8–10 N·m (threadlocker medium strength)
  • Derailleur hanger: 3–4 N·m, replaceable dropout type UDH compatible
▸ Maintenance & handling notes
  • Avoid clamping on top tube or seat tube; use workstand clamp on seatpost only.
  • Inspect for delamination after crash using coin-tap test (audible pitch change indicates separation).
  • Do not exceed 8 N·m on any carbon interface component without washer or torque limiter.
  • Storage temperature -10°C to 50°C, avoid direct contact with acetone or brake fluid.
ⓘ
Maximum rider weight limit
120 kg (including gear) for road/gravel variants; 150 kg for reinforced e-bike certified version.
ⓘ
Warranty coverage for paint
2 years against delamination or clear coat peeling. Stone chips not covered.
ⓘ
Di2/EPS internal routing
Compatible with Shimano Di2, SRAM AXS, Campagnolo EPS. Internal channels for 4 wires.
! ISO 4210-6 certified. Batch serial number for traceability. Layup optimized for 75 kg rider weight; customization available for stiffness tuning.
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About Us
Jiangyin Dongli New Materials Technology Co., Ltd.
Founded in 2018, Jiangyin Dongli New Materials Technology Co., Ltd. specializes in the comprehensive development and manufacturing of high-performance fiber composite materials. We are China Carbon Fiber Bicycle Frame Manufacturers and Custom Carbon Fiber Bicycle Frame Factory. Located in a 32,000-square-meter industrial complex, the company features precision-controlled production environments, including climate-regulated workshops and 100,000-grade purification zones.
As a one-stop factory with full process control, we integrate material innovation with engineering expertise to serve industries such as aerospace, automotive and sports equipment development. Our capabilities include the R&D and production of high-performance fiber fabrics through weaving and prepreg processes, as well as composite products utilizing autoclave, RTM, RMCP, PCM, WCM, and spraying technologies.
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