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We are pleased to ship goods (no bikes) internationally. A default carriage charge will show at checkout but we will adjust this to reflect the actual charge (eg; a pair of chainrings to France or Germany would be c.GBP10; a chainset to the USA would be GBP20). If the actual carriage charge is greater than the default charge, we will contact you before proceeding.

26 Aug 2025 UPDATE: Our export of goods to the USA is currently suspended until further notice. This is due to the removal of the 'de minimis' (duty-free threshold) arrangement and the introduction of tariffs, both being effective from 29 Aug 2025. We apologise to our US customers for the inconvenience caused and hope to be able to resume shipping to the USA during September 2025.

Products » Drivetrain » Rear Derailleurs » SHIMANO GRX RD-RX400 Rear Mech (2x10 Speed)

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SHIMANO GRX RD-RX400 Rear Mech (2x10 Speed)

rrp £64.99

Sale £57.00

Description	Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world Low profile Shadow Plus design 10-speed rear derailleur for fast and precise shifting performance Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting Compatible with 10-speed HG chains Wide gear ratio compatible up to 11-36T Compatible with the Tiagra 10spd (4600/4700 series) actuation ratio For use with double chainset Weight: approx 300 g

Description

Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world
Low profile Shadow Plus design 10-speed rear derailleur for fast and precise shifting performance
Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
Compatible with 10-speed HG chains
Wide gear ratio compatible up to 11-36T
Compatible with the Tiagra 10spd (4600/4700 series) actuation ratio
For use with double chainset
Weight: approx 300 g

As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.

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SHIMANO GRX RD-RX400 Rear Mech (2x10 Speed)

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