Call Us: 01782 747782
Free UK Shipping Over £50 & Easy Returns



Free UK standard shipping on orders over £50
Upgrade your Shimano GRX 11-speed rear derailleur with the Enduro Bearings XD15 Direct Line Pulley Wheels, engineered for exceptional durability and precision. Crafted with machined Delrin material and equipped with XD-15 Ceramic Hybrid bearings, these jockey wheels deliver smooth, reliable shifting performance while resisting corrosion and wear. Designed specifically for Shimano GRX 11sp derailleurs, they ensure optimal chain engagement and enhanced drivetrain efficiency.
The pulleys feature a unique combination of CN (tight clearance) bearings on the upper pulley to improve shifting accuracy and C4 (loose clearance) bearings on the lower pulley to accommodate chain-line movement. Made from 500 AF Delrin with Teflon infusion, these pulleys offer superior mechanical strength, natural lubrication, and resistance to moisture, chemicals, and UV exposure. This results in significantly reduced friction compared to aluminum or titanium alternatives, allowing your drivetrain to run smoother and quieter.
Enduro’s exclusive XD-15 Ceramic-Hybrid bearings utilize cryogenically treated nitrogen steel races paired with Grade 3 Silicon Nitride ceramic balls. This advanced design maximizes contact area and longevity, while the specialized Kluber NBU52 grease maintains optimal lubrication and reduces the risk of washout even under demanding conditions. Proudly manufactured in the USA, these pulleys represent the pinnacle of quality and performance for serious cyclists seeking a dependable upgrade.
Are these pulley wheels compatible with all Shimano GRX 11-speed rear derailleurs?
They are designed specifically for most Shimano GRX 11-speed rear derailleurs featuring 5mm bolt holes, but it’s recommended to verify compatibility with your specific model before purchase.
What makes XD-15 Ceramic-Hybrid bearings superior to standard bearings?
XD-15 bearings combine cryogenically treated nitrogen steel races with Grade 3 Silicon Nitride ceramic balls, providing enhanced durability, reduced friction, and improved performance under demanding conditions compared to standard steel bearings.
Stock Status Instock - Instore - Item Usually shipped or available for shop collection, within 48 hours (Mon-Fri)
Instock - Supplier Warehouse - Item is held in Suppliers Warehouse, Depending on the the supplier transfer time can vary from 24 Hours to 14 Days for item held in European warehouse.
(over festive periods some suppliers shut from 24th Dec-2nd Jan so orders can be delayed through this period.)
Brands held in European website include Trek, Bontrager, Electra, Wahoo, Rapha. For up-to-date transfer times please call customer services on +44 (0)1782 768622
Most out products are shipped by FedEx, providing unprecedented reliability and speed. Lightweight Spares below £25.00 value have a Royal Mail postage option, which is sent via Tracked 48 service. - £2.99
Shipping on all Domestic Orders over £50.00 (excluding bikes and home trainers) for delivery within the UK is completely FREE!
Bike and Home Trainers and oversize Goods £15.00 - FedEx
White Glove Bike Delivery - our white glove option has your bike personally delivered to you by a fully trained Mechanic and Bike fitter - £99.99
(Certain bikes will only have this option such as Cargo Bikes)
To Qualify for FREE Shipping:
In some cases, we may ship items out with another courier, depending on the status and availability of items ordered. (Customers will not be charged more and will be refunded any unused postage cost) If part of an order is cancelled and the total drops below the £50.00 free postage, a postage charge may be taken.
Delivery costs will be clearly stated on the checkout page, though you will need to register (to provide your delivery address) in order to see the delivery costs.
If you have any questions about delivery charges, times or none delivery please do not hesitate to get in touch by email:store@swinnertoncycles.co.uk or by telephone on +44 (0)1782 768622. Handling is normally 48 hours, but at busy periods this may be extended but we will endeavor to process your order within 5 working days. Please bear in mind in some cases orders can take longer to process, please contact us for more details.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
