Description The Ortlieb Seat post mount & brace is a 300mm accessory for using your Quick Rack with a second bike. You want to use a second bike with your Quick-Rack and need an additional long mounting brace and / or need a second seatpost mount, no problem, because with this accessory you get both at once. Product Code: E243 Not sure if the Ortlieb Seat Post Mount and Brace is the part you need? We can help! One of the best things about Ortlieb is their huge & ongoing range of spare parts & replacement parts. We have been stocking Ortlieb bags & accessories at Abbotsford Cycles for decades because they make excellent products. And they can last you a lifetime because their hardware can be replaced & they bags can be repaired. The reason we recommend these products is how confident we are that you will never need to buy another Ortlieb! But we know it can be tricky figuring out which part you need, and which is compatible with your bag. So if you are having trouble, get in touch. We have manuals & years of experience finding & fitting the correct parts for Ortlieb bags & racks. And we are confident that your Ortlieb can continue to be the best waterproof bag you can buy!