How do you ensure bike quality?

We have a complete QC system: testing components before use, quality control during production, and performance checks including road testing after assembly.

Are you a trading company or manufacturer?

We are a professional manufacturer of electric bikes and electric scooters in China.

Custom Rear Derailleur Bikes Cycle City Road Man Bicycle Electric Motor E Bike

Name: Custom Rear Derailleur Bikes Cycle City Road Man Bicycle Electric Motor E Bike
Brand: Shenzhen Gravity Technology Co., Ltd.
SKU: 2077261745

Guangdong, ChinaShenzhen Gravity Technology Co., Ltd.

US$643.00

10-99 Pieces

US$575.00

100-199 Pieces

US$557.00

200+ Pieces

Sample price:US$643.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

12months

Warranty

12months

Model NO.

Z20023

Type

Mountain Bike

Used For

All Ages

Wheel Diameter

20"

Frame Material

Aluminum/Alloy

Folded

Unfolded

Derailleur Set

Rear Derailleur

Fork Material

Aluminum/Alloy

Rim Material

Aluminum/Alloy

Saddle Shell Material

Leather

Chain

Chinese Brand

Tire

20*4.0

Dashboard

LED Display

Frame

Pedal Mode, Accelerator Mode, Sport Mode

Color

Custom

Cassette

7 Speed

Brake

Disc Brake

Brake Handle

Aluminum Alloy, Auto Shut off Power

Charger

Input: 100-240V AC Output: 54.6V DC/2.0A

Nedc

55-60km

Transport Package

Carton

Specification

CTN: 132*30*64CM G. W/N. W: 35kg/27kg

Origin

Shenzhen, China

Production Capacity

1000000

Key features

Customizable Color: Color is fully customizable to meet specific brand or personal requirements.

Multi-Mode Operation: Features Pedal Mode, Accelerator Mode, and Sport Mode for versatile riding experiences.

High-Capacity Battery: Equipped with 48V 15AH battery offering 55-60km range and low consumption.

Powerful Motor: 48V 750W electric motor ensures strong performance and high speed up to 45kmph.

Durable Frame Material: Constructed with Aluminum/Alloy frame and fork for lightweight strength.

Comprehensive Warranty: Includes 12-month warranty covering mechanical defects and parts.

Advanced LCD Display: Large front-center display shows battery level, speed, odometer, and trip distance.

Versatile Tire Options: 20x4.0 inch tires suitable for sand, beach, snow, and city roads.

Company profile

Shenzhen Gravity Technology Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2006-08-28 CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤2.01h CertifiedTerms of Payment: LC, T/T, D/P, etc. CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR

AI-Powered supplier vetting

SummaryShenzhen Gravity Technology Co., Ltd. is a China-based trading company established in 2017, focused on electric bikes and related bicycle products. The supplier reports annual electric-bike output of 200,000 pieces, three production lines, a 500 m² manufacturing plant, and six to ten quality-control staff. It exports to South America, Southeast Asia/Mideast, Europe, Australia, and North America, with stated export sales of 71%–90% and access to Shenzhen and Guangzhou ports. OEM and ODM services are offered, supported by three years of R&D-engineer experience. The supplier describes lifelong service and fast response, but no certifications or customer cases are provided. Financial assessment is limited because monetary information is excluded.

Supplier typeThe supplier is explicitly identified as a trading company and limited company headquartered in Shenzhen, China. Its stated activities include electric-bike products, OEM/ODM services, exporting through agents and self-operated export rights, and broad international markets.

After-Sales capabilityThe supplier states that it provides a complete service system including lifelong service, fast response, and constructive customer suggestions. These are explicit service claims, although no service metrics, procedures, or independently verified evidence are provided.

R&D capabilityThe supplier offers OEM and ODM services and reports three years of R&D-engineer experience, indicating some product-development capability. However, no patents, new-product records, engineering resources beyond this figure, or innovation outcomes are stated.

Production capacityThe supplier reports annual electric-bike output of 200,000 pieces, three production lines, a 500 m² manufacturing plant, and six to ten quality-control staff. It also states one-month off-peak lead time and two-to-three-month peak-season fulfillment, providing explicit evidence of established production capacity.

Customization capabilityOEM and ODM services are explicitly stated as available, and the supplier promotes one-stop service for diversified needs. This supports customization capability, although the scope of customization and technical limits are not specified.

Product Q&A

Q:Where is your company located and can I visit?

Our factory is located in Shenzhen City, China. You are welcome to visit us.

Q:Do you offer samples?

Yes, we offer samples for quality check. However, since electric bikes are high-value items, samples are not free and transportation fees are not included in the sample price.

Q:Can I customize my product?

Yes, we accept customized requirements for color, logo, design, package, carbon mark, and language.

Q:What are the payment terms?

We accept EXW, FOB, CNF, CIF, DDP, and DDU. For bulk orders, a 50% deposit and 50% balance before shipment is required. Payment methods include T/T, L/C, West Union, Money Gram, Visa, and MasterCard.

Q:How is shipment handled?

If you have a forwarder, we can send cargo to them. Otherwise, we recommend suitable shipping methods like courier, air, or sea via DHL, UPS, Fedex, and TNT.