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6061 aluminum Gravel e-bike frame with open BB system for OEM manufacturing
E-BIKE FRAME

Gravel E-Bike Frame – Open BB System OEM

Custom 6061 aluminum Gravel e-bike frames for OEM brands, with a special open BB system, hub-motor and down-tube battery integration, 700C wheels and 45C tire clearance.

Custom Gravel E-Bike Frame for OEM Projects

This custom Gravel e-bike frame is designed for brands developing electric Gravel bikes with a hub-motor configuration. The 6061 aluminum frame supports 700C wheels and tires up to 700×45C, with a down-tube battery, disc brake compatibility and internal cable routing.
A key feature of this frame is its specially designed open bottom bracket system, providing a distinctive frame architecture for specific e-bike development and component integration requirements.
The frame size, geometry, finishing and other project specifications can be customized according to the buyer’s requirements.



Key Specifications


Specification
Details
Frame Type
Gravel E-Bike
Material
6061 Aluminum
Wheel Size
700C
Tire Clearance
Up to 700×45C
Motor
Hub Motor
Battery
Down-Tube Battery
Brake
Disc Brake
Cable Routing
Internal
Bottom Bracket
Special Open BB System
Frame Size
Customizable
MOQ
50 pcs

Special Open Bottom Bracket System

Unlike a conventional closed bottom bracket area, this Gravel e-bike frame uses a specially designed open BB system developed for the specific frame architecture.
For OEM projects, the bottom bracket area can be an important consideration when evaluating frame structure, component integration and manufacturing feasibility.
If your project requires a specific BB configuration or has special component-interface requirements, we can review the design and specifications before prototype development.

OEM & Private Label Gravel E-Bike Customization

The frame can be developed around your product concept, target market and component requirements, including:
  • Frame geometry and sizing
  • Gravel e-bike frame design
  • Hub-motor integration
  • Down-tube battery integration
  • Open BB system configuration
  • Internal cable routing
  • Disc brake compatibility
  • Frame finishing and paint
  • Logo and branding
  • Project-specific specifications
For complete e-bike projects, we can also coordinate compatible components based on the frame and system configuration.

Gravel E-Bike Engineering & Development Support

Have your own Gravel e-bike drawing or concept?
Send us your 2D or 3D frame drawing, together with the motor, battery and key component specifications. We can review the frame design and manufacturing requirements before prototype development.
For a custom Gravel e-bike, important interfaces such as the motor, battery, rear wheel, cable routing and bottom bracket area should be considered together rather than developed independently.
Our development workflow supports:
Concept → Drawing Review → Engineering → Prototype → Production
The goal is to identify potential manufacturing or component-integration issues before mass production.

Quality & Testing

Quality control can be arranged throughout component inspection, frame production and final inspection according to the project requirements.
If your target market requires specific bicycle or e-bike testing standards, testing requirements can be discussed and incorporated into the project quality plan.

OEM Project Information

  • MOQ: 50 pcs
  • Sample: Based on project requirements
  • Sample Lead Time: 45–55 working days
  • Production Lead Time: 45–55 working days
  • Trade Terms: EXW / FCA / FOB / CFR / CIF
  • Customization: Geometry, sizing, finish, branding and project specifications
  • Support: OEM / ODM development and production coordination

Start Your Gravel E-Bike OEM Project

If you are developing a custom Gravel e-bike with a hub motor or have a specific bottom bracket configuration, send us your drawing and component requirements.
We can review the frame concept, component interfaces and manufacturing requirements before prototype development.
From frame design to prototype and production, we help turn your Gravel e-bike concept into a manufacturable OEM project.

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BUYER DECISION CARD

Plan Your OEM Project with Confidence

Key commercial details to review before requesting a quotation.

01 / MOQ & Lead Time1

MOQ & Lead Time

MOQ starts from 50 pcs. Sample lead time is confirmed case by case after specification review. Production lead time is typically 45–55 working days.

MOQ 50 pcs / Samples case by case / 45–55 working days
Request an OEM Quote
02 / Trade Terms2

Trade Terms

Available trade terms: EXW · FCA · FOB · CFR · CIF.

EXW · FCA · FOB · CFR · CIF
Request an OEM Quote
03 / Quotation Process3

Testing & Quotation

Testing plans are defined by product type, target market and agreed specifications. Reports are available when included in the project scope.

Specification review / Agreed test plan
Request an OEM Quote