Frequently Asked QuestionsThru AxlesWhich Thru Axle do I need for my bike?If you’re unsure of the Thru-Axle you require please check out this page. If your bike isn’t listed in the table, or you’re still unsure, just email us through at firstname.lastname@example.org with your bike make, model and year, and we can assist.Is my bike QR or will it need a Thru Axle?If you’re unsure of the axle type of your bike, see our blog post here.RacksCan the rack be secured to a Carbon-Aero seat post?Every rack is provided with an extra-long aero seat post connector. Please be aware though, that the seat post connector may rub the carbon finish over time, so we suggest placing some soft material in between the two parts if you wish to retain the original finish of your post.My Rack has developed a fault, what should I do?If your rack develops a fault, please email us at email@example.com with as much detail as possible (including photos) of the issue.Can I mount other manufacturers pannier bags onto the rack?At this time it is not possible to mount 3rd party panniers to our X Series racks. We are developing the ‘boosters’ (adaptors) to allow this, and they are likely to be ready towards the end of the year. If you subscribe to our email list, we will inform all of our subscribers once they are ready.Top Bags & Side PanniersHow much weight can I put in each bag?Each bag has a load capacity of 9kg, so all three bags (Top and Side) the rack will carry a total of 27kg.I can’t decide between the UD and SL side bags for my setup, can you help me decide?The differences between the two side bags are subtle; they are both ultrasonically welded, 100% waterproof, and same 22-litres capacity.The distinction that can be seen is that the Super Light (SL) bag is one of the lightest panniers on the market weighing in at 650 grams, and is designed for those who want to save grams and travel fast – whether that be commuting or touring.The Ultra-Durable (UD) is the more robust of the two, constructed with thicker, tougher walls. It’s hypalon construction means it will stand up to more of a rough ride and is suited to those who expect their bags to take a pounding. The UD also features a waterproof external pocket, and weighs in at 800g.Fundamentally, SL is about speed and the UD is about durability.Can I mount your bags to traditional metal racks?Yes. Every bag comes with spacers that allow it to fit racks with 8, 10 and 12mm diameter tubing.The clamping unit is damaged, can I still ride with it unable to fully clamp?We don’t recommend using the bag if the clamp is defective. If your clamps become damaged, go to our Returns Page here and fill in our repair form to arrange a spare part, or repair.My pannier bag has a hole in it, can I repair holes in the bag myself? (e.g whilst touring)If there is a small hole in the bag and you’re on the road, we recommend using a high-quality repair kit or heavy-duty sealing and repair tape (e.g McNett Tenacious). For longer-term, reliable fixes though we always recommend you arrange a repair with us. Contact us at firstname.lastname@example.org for help with this.My Pannier has developed a fault, what should I do?If any of your bags develop a fault, please email us at email@example.com with as much detail as possible (including photos) of the issue.CompatibilityCan I use the rack on several of my bikes?Yes you can, so long as the axle on your other bikes is the same, you can simply swap between using the QR attachment. If it isn’t you’ll need a new axle to make it compatible. It’s a good idea to buy a new axle for each bike anyway, just for ease of changing between them. All of our axles can be found here.Is the system compatible with the current RAT system?Unfortunately, we’re still working on this technology. We hope to be completely compatible by the end of the year, subscribe to our email list to stay posted on this.Can I use the rack with disc brakes?Yes, all our axles fit both bikes with rim and disc brakes.Ordering, Delivery & ReturnsCan I order replacement parts?Yes you can, our racks and bags are designed for long-life and ease, so you are able to replace almost every part yourself. Please email us at firstname.lastname@example.org to request parts.Can I change the detail of my order once it has been placed?Unfortunately, we cannot amend any details of your order once it has been placed. We suggest that if you have ordered something you no longer want, wait for it to arrive and then send it back to us for a refund. For our full returns policy click here.How much does it cost to ship my order?We offer free shipping on all our packages, worldwide. For all other items, shipping depends on your location and the size of your order, you’ll be notified at the checkout. How long does shipping take?We offer free shipping on all our packages, worldwide. For all other items, shipping depends on your location and the size of your order, you’ll be notified at the checkout. Our estimated shipping times for economy delivery are as follows:UK (2-4 business days)EU (3-7 business days)USA & CANADA (5-15 business days)AUSTRALIA (5-15 business days)ASIA (6-10 business days)REST OF WORLD (5-15 business days)Please note: you can always upgrade to Express Shipping, there will be an option for this at checkout. Can I track my items?You will be sent tracking information to your registered email address once the package has left our facility.What is Tailfin’s return policy?Click here to see our returns policy.How do I return an item?Follow the steps on our returns page here.