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Engineered for reliability and versatility, the Surly Cassette Cog is an essential component for cyclists seeking durable performance in their transmission systems. Designed to be compatible with Shimano HG Spline and optimised for 9-speed spacing, this cog delivers dependable operation across 9-speed and fewer gear configurations. Manufactured from CNC machined hardened SCM 415 Cr-Mo Steel and finished with chrome plating, it ensures exceptional resistance to wear and long-lasting service life. Explore more from Surly and discover a range of options within our Cassette Cogs collection.
Its straightforward tooth profile is tailored for Single Speed applications, offering a robust and stable gear option that minimises the risk of drivetrain issues. The cog’s large anti-dig footprint provides a secure interface with the cassette body, protecting alloy or titanium hubs from torque transfer damage. This combination of durability and compatibility makes it a reliable choice for both single and multi-speed riders who prioritise strength and consistent performance.
Available in a selection of 13-22T sizes, this cog requires additional spacers when used outside of 9-speed setups to ensure proper fitment. Its design balances ruggedness with practical functionality, making it a dependable upgrade or replacement part for a variety of cycling needs.
Is this suitable for different rider sizes or preferences?
The Surly Cassette Cog is available in multiple tooth sizes ranging from 13 to 22T, allowing riders to select the appropriate configuration to suit their gearing preferences and riding style.
What key accessories or add-ons complement this model?
To optimise performance, consider pairing this cog with compatible Shimano HG Spline chains and high-quality cassette spacers. For additional drivetrain enhancements, explore our selections of pedals, helmets, and lights to complete your cycling setup.
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.