While there’s too many different makes and models of bicycles that take too many different size collars for us to keep track of all of them, we can point you in the right direction, and give you tips on how to accurately measure so you know which Engin Seat Collar to order!
The most accurate way to know what seat collar you need is to measure the seat tube of your bicycle yourself, with a pair of calipers. Take a measurement of the width of your seat tube, not the seat post, and that will tell you exactly what size collar you need. There is some variation, so if you measure 35.00 mm, you’ll still want the 34.9 mm collar.
is if the maker of your frame knows what diameter collar you need. Visit the manufacturer’s website and find the page for your model, (if it’s older it might be in an ‘archive,’) and find specs, or specifications, and look to see if there is any listed seat tube or seat collar diameter, but not seat post diameter. If you have a custom built frame, you can probably