Aluminum alloy frame for an ergonomic step-through city bike
This ergonomic step-through city bike combines a low-step frame design with optimized geometry to provide optimal comfort, safety, and use for extended urban riding.
For high-frequency usage scenarios like shared mobility systems, commuting programs, and rental fleets, the step-through structure makes mounting and dismounting simple.
Main Advantages
The frame, which is made of premium aluminum alloy, guarantees the ideal ratio of strength, weight reduction, and riding comfort.
- Easy handling in urban settings thanks to its lightweight construction
- Resistance to corrosion for extended outdoor use
- Sturdy construction appropriate for commercial use
- Reduced lifespan costs for large purchasers
Frame Geometry Optimization (Geometry Chart Available)
This type ensures ideal posture and less tiredness during long rides because it is based on ergonomic engineering concepts and rider data analysis.
- To lessen shoulder and back pain, ride upright.
- Wheelbase balance for improved stability
- Improved seat and handlebar placement
- There are several frame sizes available for various markets.
Comfort-Oriented Design Validation: Designed for Long-Ride Comfort
Because this bike was created and tested with long-distance riding comfort in mind, it is ideal for:
- Programs for renting and sharing bikes
- Fleets that commute every day
- Urban recreation and lifestyle markets
- Segments for female and senior riders
Benefits of performance:
- Decreased weariness after prolonged use
- Better comfort and posture for riders
- A more secure and steady riding experience
- Increased rates of consumer retention and satisfaction
Key Features
- Frame Type: Ergonomic step-through design
- Material: Aluminum alloy that is lightweight
- Riding Position: Comfortable upright geometry
- Use: Shared mobility, renting, and urban commuting
- Target Users: Broad coverage of demographics
OEM/ODM Personalization
We offer adaptable production solutions designed for international B2B customers:
- Modifications to frame shape and size
- Options for color and finishing
- Upgrades to component configuration
- Shipping and packaging options
Why Us
- Competitively priced direct manufacturer
- robust ability to produce aluminum frames
- steady supply for long-term and large orders
- Strict requirements for quality control
- knowledgeable about B2B exports internationally
Factory photos

About Us

Gentle Sports is a professional custom bike manufacturer in China with over 20 years of experience in producing complete bicycles and accessories. Our factory combines a frame production facility, a painting line, and two bike assembly lines, enabling an annual production capacity of 200,000 bikes. We are equipped with advanced machinery imported from abroad to ensure high-quality manufacturing.
OEM Customization Highlights
Lightweight aluminum or chromoly steel frame options
Custom tube thickness to balance weight and strength
Optional carbon or alloy fork
Brand-specific paint, decals, and finishing
Why Join Forces With Gentle Sports?
Strict Quality Control: Impact and strap retention tests are performed on each batch.
Customization: Complete OEM services, including unique packaging, colors, and logos, are offered.
Global Logistics: Knowledge of managing large shipments to Asia, North America, and Europe.
Get in touch with us now to obtain:
Pricing for wholesale
MOQ information
Lead time for production
Solutions for customization
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