3R40 Inner Three-Speed Rear Hub with 28-Hole Handle Cover

Upgrade your bicycle's drivetrain with the 3R40 Inner Variable-Speed Rear Hub — a precision-engineered internal gear drum designed for smooth, reliable multi-speed cycling. Featuring a robust 28-hole lacing pattern and a durable handle cover, this flower drum hub integrates seamlessly into classic city bikes, commuter bikes, and cruisers that demand dependable internal gear shifting.

Key Features

3-Speed Internal Gearing: Smooth in-hub gear transitions keep your drivetrain clean and protected from the elements.
28-Hole Flange: Standard 28-hole spoke pattern ensures compatibility with a wide range of wheel builds.
Inner Variable Speed Mechanism: Enclosed gear system for low-maintenance, all-weather performance.
Rear Axle Shaft Design: Precision-machined rear shaft provides stable, centered wheel alignment.
Handle Cover Included: Protective cover shields the hub mechanism and maintains a clean finish.
Durable Construction: Built to withstand daily commuting and regular cycling demands.

Product Specifications

Model: 3R40
Speeds: 3-Speed Internal
Hole Count: 28-Hole
Type: Internal Gear Rear Hub (Flower Drum)
Position: Rear
Includes: Handle Cover
Made in: Mainland China

Perfect For

City and commuter bicycle builds or rebuilds
Replacing worn or damaged internal gear hubs
Traditional cruiser and urban bike restorations
Cyclists who prefer a clean, chain-guard-compatible drivetrain

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External Resource

For general bicycle safety standards and maintenance guidance, visit the U.S. Consumer Product Safety Commission – Bicycle Safety Guide.

Learn more: Bicycle wheel

Frequently Asked Questions

Q: What type of bicycle is the 3R40 internal gear rear hub compatible with?

A: The 3R40 three-speed internal gear rear hub is compatible with most standard city, commuter, and cruiser bicycles that use a 28-hole rear wheel lacing pattern. Always verify your frame's dropout spacing and axle dimensions before purchasing.

Q: What are the advantages of an internal gear hub over a traditional derailleur system?

A: Internal gear hubs like the 3R40 enclose all moving gear components within the hub shell, protecting them from dirt, moisture, and debris. This results in lower maintenance requirements, reliable all-weather shifting, and compatibility with full chain guards for a cleaner bike setup.

Q: Does this hub come with all necessary hardware for installation?

A: The 3R40 rear hub includes the handle cover as specified. It is recommended to consult a local bike mechanic or refer to your bicycle's manual for spoke length requirements and any additional hardware needed for wheel building or installation.

Q: What does "28-hole" mean for a bicycle hub?

A: The "28-hole" specification refers to the number of spoke holes on the hub flange. This determines how many spokes the wheel will use, and it must match your rim's hole count. 28-hole is a common standard for lightweight city and commuter builds.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

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