Direct from our Shenzhen R&D and manufacturing facility. Designed for rugged urban durability, weatherproofing, and seamless integration.
Analyzing micro-mobility infrastructure, weather stress-tests, commercial e-bike fleet demands, and regulatory compliance across the 5 NYC Boroughs.
New York winters involve intense chemical de-icing salts across Manhattan avenues and Brooklyn bridge crossings. Standard metallic chain covers degrade rapidly. Our high-impact ABS and anodized 6061-T6 aluminum guards undergo 96-hour ISO 9227 salt-spray testing to guarantee zero rust and structural failure.
With thousands of food delivery couriers relying on Class 1, 2, and 3 e-bikes across Queens and the Bronx, chain derailment and clothing entanglement cause severe downtime. Our heavy-duty full-wrap chain cases are custom-engineered to withstand continuous torque from mid-drive and hub motors.
Rough asphalt, cobblestone streets in DUMBO, and frequent curb drops place high dynamic loads on bicycle accessories. Our mounting brackets feature reinforced anti-vibration nylon inserts and dual-bolt locking mechanisms to eliminate loosening during high-mileage urban operation.
| Guard Material Grade | Tensile Strength | Cold Impact (-20°C) | Salt-Spray Resistance | Ideal NYC Application |
|---|---|---|---|---|
| High-Impact Polycarbonate (PC) | 65 MPa | Passed (No Shatter) | 120 Hours Rated | Urban Commuter & City Sharing Bikes |
| 6061-T6 Anodized Aluminum | 310 MPa | Passed (Rigid) | 240 Hours Rated | Premium Fixed-Gear, Cargo & E-Bikes |
| Reinforced ABS Synthetics | 45 MPa | Passed (Flex Retention) | 96 Hours Rated | Commercial Last-Mile Delivery Fleets |
| 3D Printed / Molded Nylon | 80 MPa | Passed (High Ductility) | 150 Hours Rated | OEM Custom Frame-Integrated Solutions |
Empowering North American distributors, brand owners, and OEM partners with end-to-end industrial production, precision CNC machining, and rigorous quality control.
From 3D CAD modeling and rapid prototyping to high-volume injection tooling. We customize chain ring tooth clearances (38T to 52T) and bottom bracket mounting brackets specifically for your bicycle frame geometry.
Our manufacturing processes operate under strict ISO9001 standards. All finished products comply with US CPSC regulations, European REACH, and RoHS environmental directives, ensuring smooth clearance through US Customs at Port Newark/New York.
Offering complete FOB, CIF, DDP, and door-to-door express terms. We handle custom clearance, tariff documentation, and palletized sea/air shipping directly to warehouses across New York, New Jersey, and Connecticut.
Addressing supply chain terms, product compatibility, tooling options, and delivery timelines for US importers and fleet managers.
For our standard production models, the MOQ starts at just 20 pieces. For custom logo branding, unique colorways, or private label packaging, MOQ typically ranges from 200 to 500 units depending on material selection. Custom injection mold projects are quoted based on tooling complexity.
We manufacture specialized motor-casing brackets and offset chain covers tailored specifically for mid-drive e-bike footprints. Our engineering team can review your CAD files or frame samples to guarantee zero chain line interference and proper clearance.
Every batch of raw polymer material is stress-tested in environmental cold chambers down to -20°C to prevent brittle fractures during winter riding. Aluminum components receive multi-layer anodization or powder coating tested under continuous salt fog conditions to prevent pitting and oxidation.
Standard sample dispatch takes 3–5 business days. Mass production orders generally require 15–25 days. Ocean freight from Ningbo/Shenzhen to US East Coast ports (Port Newark/Elizabeth) takes approximately 25–30 days via direct lines, while air freight options deliver within 5–7 days.
Yes. We offer comprehensive OEM/ODM services, including laser-etched logos, screen printing, custom header cards, color boxes, and barcode labeling ready for distribution across US retail channels or Amazon FBA warehouses.
Contact our senior export engineering team today for instant quotes, sample requests, or custom OEM technical consultations.
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