120mm 3 Speed Internal Gear Hub Silver planetary gear internal gear bicycle

The Manual 3-Speed Internal Gear Hub is designed for city e-bikes, commuter bicycles and lightweight urban mobility platforms that require simple mechanical shifting, clean rear-wheel integration and reliable daily riding performance. This outside-fork version places the shift control structure outside the rear fork area, making installation, adjustment and maintenance more accessible for vehicle assembly and after-sales service.
With a 186% total gear range and three gear ratios of 0.73, 1.00 and 1.36, the hub provides practical support for low-speed starts, steady city cruising and moderate climbing. The sealed planetary gear structure keeps the main transmission components enclosed inside the hub shell, helping reduce exposure to dust, mud, water and external impact compared with external derailleur systems.
The LG-N3010-3V version is configured for V brake applications. With 120 mm O.L.D., 189.5 mm axle length and 0.9 kg reference weight, it is suitable for lightweight city bike and e-bike platforms that need a practical manual 3-speed rear hub with easy service access and conventional brake compatibility.

• Manual 3-Speed Shifting: Allows riders to select gears directly according to road conditions.
• Outside-Fork Control Layout: Provides easier access for assembly, adjustment and maintenance.
• V Brake Compatibility: Suitable for bicycle platforms using simple and widely adopted V brake systems.
• 186% Gear Range: Covers starting, cruising and moderate climbing for daily urban riding.
• Sealed Planetary Gear Hub: Helps protect internal transmission parts from dust, rainwater and road contamination.
• Lightweight Structure: 0.9 kg reference weight supports practical lightweight city bike design.
• Rear Hub Integration: Reduces exposed drivetrain components compared with external derailleur systems.
• IPX6 Waterproof Rating: Designed for regular outdoor riding and short-distance mobility use.

This manual internal gear hub uses a planetary gear mechanism built inside the rear hub shell. The rider changes gears through a matched shifter, and the internal transmission switches between three ratios. The low gear helps with starting and heavier pedaling, the middle gear supports regular city riding, and the high gear improves pedaling efficiency during faster cruising.
The outside-fork controller layout is especially useful for OEM projects that prioritize service convenience. Because the shift control structure is positioned outside the rear fork, technicians can access the adjustment area more easily during installation or maintenance. This makes the model suitable for city bicycles, fleet mobility and e-bike platforms where simple mechanical service is important.
Compared with disc brake or roller brake versions, the V brake configuration offers a practical option for lightweight bike designs and conventional urban bicycle platforms. Combined with a sealed internal gear structure, LG-N3010-3V provides a clean, low-exposure drivetrain solution while keeping the brake system simple and familiar.

The LG-N3010-3V manual 3-speed internal gear hub is suitable for city e-bikes, commuter bicycles, lightweight utility bicycles and urban mobility platforms that require simple mechanical shifting and V brake compatibility. It is especially useful for projects where service access, lightweight structure and familiar brake configuration are important.
For riders, the three-speed gear range supports daily starting, cruising and moderate slopes. For OEM bicycle brands, the outside-fork control layout helps simplify assembly and maintenance, while the sealed internal gear structure reduces drivetrain exposure compared with external derailleur systems.

Q1: Is LG-N3010-3V automatic or manual?
A1: LG-N3010-3V 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 difference between LG-N3010-3V and LG-N3010-3R?
A3: LG-N3010-3V is the V brake version, while LG-N3010-3R is the roller brake version. Both are outside-fork manual 3-speed internal gear hubs.
Q4: What does outside-fork control mean?
A4: Outside-fork control means the shift control structure is positioned outside the rear fork area. This makes installation, adjustment and maintenance more accessible.
Q5: What type of bicycle is this model suitable for?
A5: It is suitable for city e-bikes, commuter bicycles and lightweight urban mobility platforms using V brake systems.
Q6: What should be confirmed before using this model in an OEM project?
A6: The frame O.L.D., rear fork structure, V brake compatibility, shifter model, chainline, spoke specification and installation space should be confirmed before sampling or production.