My message Close
Free shipping over £60*
No Hassle Returns
With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.
Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!
With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.
So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.
Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.
The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.
Call us if it's a bike as we can help arrange collection. Tel 01752 849315 or info@certini.co.ukPlease fill in the downloadable returns form to complete and return with your goods.CLICK HERE TO DOWNLOAD THE RETURNS FORMReturns Address:
Brand:Shimano
Code:Y3GL98010
Upgrade or maintain your gravel bike’s drivetrain with the Shimano GRX RD-RX400 Rear Mech Pulley Set. This high-quality Shimano replacement pulley wheel set is specifically engineered for use with the Shimano GRX RD-RX400 rear derailleur, ensuring smooth and reliable shifting performance on all terrains.
This genuine Shimano GRX pulley set includes both the guide pulley and tension pulley, designed to optimise drivetrain efficiency and extend the life of your derailleur. Regular replacement of your derailleur pulleys helps maintain crisp, precise shifting and reduces drivetrain wear.
Maintain peak performance on every ride with this Shimano GRX RD-RX400 rear derailleur pulley wheel set, the perfect choice for cyclists who demand durability and shifting precision.
General Unisex Brand Information