Shimano Tiagra RD-R4000 11 Speed Rear Derailleur

The Shimano Tiagra RD-R4000 11-Speed Rear Derailleur is a bicycle drivetrain component designed to guide the chain smoothly between cassette sprockets during gear changes. Its rear derailleur mechanism helps riders select suitable gears for different road conditions, from steady cruising to climbing and faster riding. The black finish gives it a clean, understated appearance that works well with many bicycle setups. Designed for replacement or drivetrain maintenance, this Shimano Tiagra derailleur is relevant to road cyclists and bicycle mechanics looking for a compatible rear shifting component. Before purchasing, verify the exact model number and drivetrain specifications, including the number of rear speeds, cassette range, shifter compatibility, and derailleur mounting type. Compatibility is especially important because rear derailleurs from different Shimano groups or speed systems may not work interchangeably.

Key Features

• Drivetrain Compatibility: Designed for 2x11-speed road bike drivetrains.

• SHIMANO SHADOW RD: Low-profile design helps reduce contact with the chainstay during riding.

• Wide Gear Range: Supports a maximum low sprocket size of 36 teeth.

• Total Capacity: 41T, according to Shimano's specifications.

• Compact Design: Streamlined construction for a neat drivetrain setup.

• Cable Adjustment: Built-in cable adjuster supports fine-tuning of shifting.

• Colour: Black finish.

Product Specifications

• Brand: Shimano

• Series: Tiagra

• Model: RD-R4000

• Component Type: Rear derailleur

• Rear Speeds: 11-speed

• Drivetrain Setup: 2x11-speed

• Compatible Chain: Shimano-compatible LINKGLIDE or HG 11-speed chain, as specified by the manufacturer

• Maximum Low Sprocket: 36T

• Minimum Top Sprocket: 11T

• Total Capacity: 41T

• Maximum Front Difference: 16T

• Derailleur Technology: Shimano Shadow RD

• Colour: Black

Shifting Performance and Gear Range

• Low-Profile Construction: The Shadow RD design keeps the derailleur close to the bicycle frame to help reduce chainstay contact in rough riding conditions.

• Gear Range Support: The specified 36T maximum low sprocket allows compatibility with a wider range of cassette options when the rest of the drivetrain meets Shimano's requirements.

• Precise Adjustment: Correct cable tension and limit-screw adjustment are important for consistent shifting across the cassette.

• Replacement Compatibility: Confirm the cassette, chain, shifter, derailleur hanger and drivetrain configuration before installation.

Easy Operation / Usage

• Check Compatibility: Confirm that your bicycle uses a compatible 2x11-speed drivetrain.

• Mount the Derailleur: Attach it to the appropriate derailleur hanger according to the manufacturer's instructions.

• Install the Chain: Use a compatible 11-speed chain and follow the specified chain-routing procedure.

• Adjust Shifting: Set the limit screws, cable tension and B-gap as instructed in the Shimano installation guide.

• Test Before Riding: Shift through all gears while the bicycle is stationary and verify smooth operation before riding.

Why Choose This Product

• Reliable Gear Changes: Shimano Shadow RD: Designed to support smooth and controlled rear shifting.

• Road Cycling Compatibility: 2x11-Speed Setup: Suitable for compatible road bicycle drivetrains.

• Wide Cassette Support: 36T Maximum Low Sprocket: Offers flexibility for compatible gearing configurations.

• Practical Replacement: Original Model Identification: The RD-R4000 model number helps buyers check the correct component for their bicycle.

• Clean Appearance: Black Finish: Blends neatly with many modern road bike builds.

In the Box

• 1 x Shimano Tiagra RD-R4000 11-Speed Rear Derailleur