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Free UK Shipping Over £50 & Easy Returns





Free UK standard shipping on orders over £50
The MRP Chain Device - 1x CS Upper Chain Device represents a reliable and cost-effective solution for riders prioritising drivetrain security without compromising on performance. Leveraging over two decades of MRP’s engineering expertise, this model features a robust, glass-filled composite backplate combined with a durable nylon upper guide. This design ensures consistent chain retention for 1x10, 11, or 12-speed drivetrains, making it an essential component for demanding trail conditions.
Engineered for simplicity and efficiency, the 1x CS is ideally suited for cross-country, trail, and enduro cyclists seeking to eliminate dropped chains that can disrupt rides or competitive events. It accommodates a broad range of narrow/wide chainrings from 28 to 34 teeth, including compatibility with oval chainrings up to 32 teeth, and supports Boost frame standards. Installation is straightforward, utilising a two-bolt ISCG-05 mount that secures the device firmly without the need to remove the crank or chainring. Explore more from MRP and related chain guides to complement your setup.
With a proprietary backplate material, the 1x CS delivers dependable chain retention focused on essential performance without unnecessary complexity. Weighing only 33g, it adds minimal mass to your bike while providing maximum confidence on every ride.
Is this chain device compatible with all 1x12 drivetrains?
Yes, the MRP 1x CS is engineered to provide reliable chain retention across 1x10, 1x11, and 1x12 speed drivetrains, ensuring broad compatibility with modern setups.
How complex is the installation process?
Installation is designed to be user-friendly and efficient, requiring no removal of the crank or chainring. The device mounts securely to ISCG-05 standard tabs using a two-bolt system, allowing for quick fitting.
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.Â
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.Â
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.


