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


Free UK standard shipping on orders over £50
The Enduro Bearings ACB 4545 150M is a precision-engineered angular contact headset bearing designed to deliver exceptional performance and durability. Crafted from high-grade 440C stainless steel, this bearing offers superior corrosion resistance and long-lasting strength, making it ideal for riders who demand reliability in challenging conditions. With dimensions of 40mm x 51.8mm x 7mm and a 45° contact angle, it perfectly fits DEDA/FSA ICR headset systems, ensuring smooth steering and enhanced control.
Unlike standard stainless steel bearings, Enduro uses only 440C stainless steel balls and races, which undergo rigorous heat and cryogenic treatments to maximize hardness and wear resistance. This high-carbon alloy provides a premium balance of strength and corrosion protection, especially beneficial in wet environments or for cyclists who frequently wash their bikes. Additionally, the bearing features LLB type seals combined with CRC Marine Grease, offering outstanding waterproofing to safeguard against sweat and the elements.
Enduro’s angular contact bearings are designed to distribute forces evenly across all balls, reducing friction and wear while extending bearing life. The inclusion of large balls, dual-lip seals riding in micro-grooves, and high-pressure grease filling ensures optimal protection and performance. These bearings are trusted in many renowned headset brands and come with a reputation for longevity and reliability, making them a smart upgrade for any steering system.
Will this bearing fit my headset?
The ACB 4545 150M is specifically designed to fit DEDA/FSA ICR headset systems with dimensions of 40mm inner diameter, 51.8mm outer diameter, and 7mm width. Please verify your headset specifications before purchase.
Why choose 440C stainless steel over other materials?
440C stainless steel offers the best combination of strength, hardness, and corrosion resistance among standard stainless steels. It is especially suited for environments with moisture, frequent washing, or exposure to sweat, providing longer life and better performance than typical stainless alloys.
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.