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Free UK Shipping Over £50 & Easy Returns


Free UK standard shipping on orders over £50
Enduro Bearings XD15 Direct Line Pulley Wheels for Shimano Dura Ace 12sp Black/Green represent a significant advancement in drivetrain performance and durability. Crafted from precision machined 500 AF Delrin®, these pulleys boast exceptional mechanical strength, natural lubricity, and outstanding resistance to moisture, chemicals, and UV exposure. This combination ensures a smooth, long-lasting operation that outperforms traditional aluminum or titanium pulley wheels by reducing friction and drag.
At the heart of these pulley wheels are the exclusive XD-15 Ceramic-Hybrid bearings, which integrate corrosion-proof, cryogenically treated nitrogen steel races with high-grade Silicon Nitride ceramic balls. This innovative design delivers superior shifting accuracy and longevity, supported by Kluber NBU52 grease that enhances smoothness over time while resisting washout. The unique bearing configuration—with tight clearance CN bearings in the upper pulley and loose clearance C4 bearings in the lower pulley—optimizes chain-line movement and maximizes drivetrain precision.
Designed as a direct fit upgrade for SRAM 12-speed road and gravel derailleurs, this 12-tooth pulley set features 4mm upper and 5mm lower bolt-holes to ensure compatibility and easy installation. Manufactured in the USA, Enduro Bearings offers these high-performance components as part of their range, providing riders with reliable, precision-engineered parts that elevate their cycling experience.
Are these pulleys compatible with Shimano Dura Ace 12-speed derailleurs?
Yes, these Enduro Bearings XD15 pulley wheels are designed specifically to fit Shimano Dura Ace 12-speed derailleurs, offering a direct line upgrade for enhanced performance.
How do ceramic-hybrid bearings improve shifting performance?
The ceramic-hybrid bearings combine corrosion-resistant steel races with Silicon Nitride ceramic balls, reducing friction and wear. This results in smoother, more precise shifting and longer bearing life compared to standard 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.