Silver 3 Speed Hub Gear Bike Black Bike Disc Brake OEM

The Manual 3-Speed Internal Gear Hub is designed for city e-bikes, commuter bicycles and urban mobility platforms that require stable manual shifting, sealed drivetrain protection and convenient rear hub integration. This outside-fork version places the shift control structure outside the rear fork area, making it easier to access during installation, adjustment and service.

With a 186% total gear range and three practical gear ratios of 0.73, 1.00 and 1.36, the hub supports low-speed starts, daily cruising and moderate climbing. The sealed planetary gear structure keeps the transmission components enclosed inside the hub shell, reducing exposure to dust, mud, water and external impact compared with traditional external derailleur systems.

The LG-N3011-3D version is positioned as a manual 3-speed outside-fork disc brake configuration. It is suitable for e-bike and city bike projects that need a compact rear hub drivetrain, modern disc brake compatibility and service-friendly external shift control.

• Manual 3-Speed Shifting: Gives riders direct control over gear selection for different road conditions.
• Outside-Fork Control Layout: Improves access for assembly, adjustment and maintenance.
• Center Lock Disc Brake Compatibility: Suitable for modern e-bike and commuter bicycle brake systems.
• 186% Gear Range: Supports starting, cruising and moderate climbing in daily use.
• Sealed Planetary Gear Structure: Helps protect internal transmission parts from dust, water and road contamination.
• Rear Hub Integration: Reduces exposed drivetrain components compared with external derailleur systems.
• Service-Friendly Design: Outside-fork control makes the shift mechanism easier to inspect and adjust.
• IPX6 Waterproof Rating: Suitable for outdoor riding and regular short-distance mobility use.

This manual internal gear hub uses a planetary gear transmission structure inside the rear hub shell. The rider changes gears through a matched shifter, while the internal gear mechanism switches between three ratios. The low ratio supports starting and heavier pedaling, the middle ratio is suitable for normal city riding, and the high ratio improves pedaling efficiency during faster cruising.

The outside-fork controller layout is the key integration feature of this model. Compared with inside-fork control, the outside-fork structure offers easier access during assembly and after-sales service. This is useful for OEM bicycle projects, shared mobility platforms and city e-bike applications where predictable field maintenance is important.

The center lock disc brake configuration makes this model more suitable for modern e-bike platforms that require compact braking integration. Combined with the sealed internal gear system, LG-N3011-3D provides a practical balance of mechanical reliability, drivetrain protection and service convenience.

Note: The visible source table shows the outside-fork center lock disc brake column as LG-N3010-3D. The following values should be used for LG-N3011-3D only after internal model confirmation.

The LG-N3011-3D manual 3-speed internal gear hub is suitable for city e-bikes, commuter bicycles, utility bicycles and urban mobility platforms that require manual shifting and disc brake compatibility. It is especially useful for projects where the rear hub needs both sealed internal gear protection and easier external shift control access.

For riders, the three-speed structure supports smoother starts, stable cruising and moderate climbing in everyday city riding. For OEM bicycle brands, the outside-fork layout helps simplify assembly and maintenance, while the internal gear hub design reduces exposed drivetrain components compared with derailleur-based systems.

Q1: Is LG-N3011-3D automatic or manual?
A1: LG-N3011-3D is a manual 3-speed internal gear hub. The rider changes gears through a matched shifter.

Q2: What is the total gear ratio?
A2: The total gear ratio is 186%. The three gear ratios are 0.73, 1.00 and 1.36.

Q3: What is the main feature of the outside-fork version?
A3: The outside-fork version places the shift control structure outside the rear fork area, making installation, adjustment and maintenance more accessible.

Q4: What brake type does this model support?
A4: This version is positioned as a center lock disc brake configuration. The exact brake interface should be confirmed with the final model specification.

Q5: What is the difference between this model and roller brake or V brake versions?
A5: This version is intended for disc brake applications, while the roller brake and V brake versions are matched to different braking systems and frame structures.

Q6: What must be confirmed before final upload or production?
A6: The exact model number, brake type, O.L.D., chainline, axle length, shifter compatibility and technical drawing should be confirmed. In the current visible parameter table, the matching outside-fork disc brake column appears as LG-N3010-3D, so LG-N3011-3D needs internal verification before final release.