This 20-inch folding bicycle platform is engineered for urban transit, fleet deployment, and private-label brand distribution. Built around a precision-engineered 6061-T6 aluminum alloy frame, the chassis utilizes a patented dual-safety folding latch to eliminate joint play. The platform supports both single-speed urban transit and 7-speed Shimano drivetrain configurations, balancing compact storage requirements with full-size ride ergonomics. Factory direct from ISO 9001 certified production lines.
Key Product Features
Dual-Safety Folding Mechanism: CNC-machined hinge box equipped with a secondary mechanical lock preventing accidental release during transit.
Telescopic Handlebar & Seatpost: Adjustable height range accommodates rider statures from 145 cm to 190 cm without frame geometry compromise.
Integrated Cable Routing: Internal top-tube and down-tube routing protects control lines from environmental debris and mechanical snagging.
High-Load Rear Carrier: Welded aluminum utility rack rated for 25 kg load capacity, compatible with standard pannier bags and child seats.
Compact Folded Volume: Reduces to 82 cm x 32 cm x 64 cm within 15 seconds, fitting standard car trunks and public transit lockers.
Technical Specifications
|
Specification Item |
Standard Configuration |
Optional Customization |
|
Wheel Size |
20 inches (406 ISO) |
20 x 1.95 inch puncture-resistant tires |
|
Frame Material |
6061-T6 Aluminum Alloy |
Chromoly steel (4130) |
|
Net Weight |
12.8 kg (excluding accessories) |
Varies by component tier |
|
Max Payload |
110 kg (Rider + Cargo) |
Up to 120 kg reinforced testing |
|
Folded Dimensions |
820 x 320 x 640 mm |
Custom frame geometry available |
|
Drivetrain |
Shimano Tourney 7-Speed |
Shimano Nexus Internal 3/7-Speed |
|
Brake System |
Mechanical Disc Brakes (160 mm rotors) |
Hydraulic Disc Brakes / V-Brakes |
|
Chainring / Crank |
52T CNC Aluminum with double chain guard |
Single/Double guard options |
|
Rims |
Double-wall aluminum alloy, 36H |
Aero-profile deep section rims |
Frame & Structural Design
The frame utilizes T6 heat-treated 6061 aluminum alloy tubing, formed via hydraulic hydroforming to optimize structural rigidity at high-stress junctions.
Head Tube: Integrated tapered design houses sealed cartridge bearing headsets, distributing frontal impact loads evenly across the down-tube gusset.
Hinge Junction: Automated robotic MIG welding secures the main fold pivot. Pivot pins are machined from high-tensile stainless steel with self-lubricating bronze bushings to prevent binding and side-play after 50,000 folding cycles.
Surface Treatment: Acid-washed, sandblasted, and coated with a dual-layer electrostatic powder coat or liquid paint with UV inhibitor, measuring 80 to 120 microns in thickness.
Components & Configuration
Foldable alloy handlebar stem with forged aluminum quick-release clamp; ergonomic TPR rubber grips secured by lock-on collars.
Vacuum-formed high-density PU foam saddle mounted on a 33.9 mm x 580 mm AL-6061 micro-adjust seatpost with laser-etched insertion limit lines.
36-spoke wheels built with 14G stainless steel spokes and sealed-bearing quick-release alloy hubs.
Foldable nylon-fiber platform pedals with reflective inserts and boron steel axles.
Applications
Micro-Mobility Sharing: Municipal and corporate station-based short-range transit systems.
Corporate Fleets: Last-mile transport for industrial campuses, logistics hubs, and large facility operations.
Retail Brand Distribution: Direct-to-consumer (DTC) bicycle brands seeking stable contract manufacturing.
Hospitality & Tourism: Resort, cruise ship, and urban hotel guest mobility amenities.
Customization Options
Color Matching:
Pantone/RAL color matching for frame, fork, and rims.
Branding:
Custom water-transfer decals beneath clear coat or laser-etched head tube badges.
Component Tiering:
Flexible specification adjustments ranging from entry-level commuter setups to mid-tier touring configurations.
Accessories:
Tailored inclusion of mudguards, kickstands, front baskets, lighting kits, and custom canvas carry bags.
OEM & ODM Manufacturing
Prototype Development: 3D CAD modeling, FEA (Finite Element Analysis) stress simulation, and CNC-machined rapid prototyping delivered within 25 days.
Tooling & Die Casting: In-house mold design and aluminum gravity die-casting capabilities for proprietary frame shapes and custom hinge housings.
Capacity: 3 automated welding lines and 2 powder-coating booths yielding an output capacity of 12,000 units per month.
Quality Control
Raw Material Testing: Spectrometer analysis verifies aluminum alloy composition (6061 grade confirmation) prior to tube cutting.
Structural Fatigue Testing:
Frame drop test and vertical load testing performed in accordance with ISO 4210 standards.
Hinge endurance rig cycling test: 100,000 continuous open-and-close cycles under load to verify latch retention.
Coating Adhesion: Cross-hatch adhesion testing (ASTM D3359) and salt spray corrosion testing (minimum 500 hours without substrate degradation).
Pre-Shipment Inspection (PSI): 100% torque verification on critical fasteners, wheel truing inspection within 0.5 mm tolerance, and functional brake test on assembly rollers.
Packaging & Shipping
Export Cartons: 5-layer corrugated master cartons with high-density EPE foam internal blocking to prevent transit abrasion.
KD Packing Ratio: 85% pre-assembled (handlebar, front wheel, saddle, and pedals require final assembly by end user). Carton dimensions: 840 x 340 x 660 mm.
Container Loading:
• 20ft GP Container: Approx. 220 units (Carton packing)
• 40ft HQ Container: Approx. 540 units (Carton packing)
MOQ & Lead Time
Minimum Order Quantity (MOQ):
• Standard configuration with custom logo: 100 units per color/model.
• Full OEM custom frame geometry: 500 units.
Production Lead Time:
• First-time orders: 35 to 45 days after sample and artwork approval.
• Repeat orders: 25 to 30 days upon receipt of deposit.
Frequently Asked Questions
Q: What international safety standards do your folding bicycles comply with?
A: All production batches comply with ISO 4210 (Cycles - Safety requirements for bicycles) and pass relevant mechanical strength test reports issued by accredited third-party laboratories such as SGS or TÜV Rheinland upon request.
Q: How do you prevent hinge looseness after long-term folding use?
A: The hinge system uses a micro-adjustable eccentric bolt paired with a spring-loaded locking pin. If minor play develops over years of use, the tension can be recalibrated in seconds using a standard hex key without replacing components.
Q: Can we mix different frame colors and component specs within a single MOQ order?
A: Yes. For an MOQ of 100 units, orders can be split into two color variants (50 units per color), provided component specifications remain uniform across the batch.
Q: What is the standard payment term for OEM manufacturing orders?
A: Standard commercial terms are 30% T/T deposit upon order confirmation, with the remaining 70% balance payable against copy of the Bill of Lading (B/L) or after passing third-party pre-shipment inspection at the factory.
Q: How are spare parts handled for warranty claims?
A: We include a standard 1% critical spare parts allowance (derailleurs, levers, folding latches, pedals) free of charge with bulk container orders. Additional replacement components are dispatched within 7 business days from our parts inventory.
Q: Can you supply the bicycles completely assembled (100%) in larger cartons?
A: Fully assembled shipping is available for regional B2B distribution via specialized logistics, though it reduces container loading density. Standard export packing is 85% pre-assembled to optimize freight costs per unit.
Request a Quote
To receive a detailed quotation including FOB/CIF shipping estimates, component data sheets, and sample ordering procedures, submit your volume requirements and target specifications through our inquiry portal.
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