The Mac Ride Child Bike Seat is compatible with many kinds of bike frames using cycling industry standardized components. There are a few exceptions, like e-bikes and city cruisers or hybrids that will require adapters. Here’s a quick guide to determining your bike compatibility. If you have any questions, please don’t hesitate to contact a Bambino Gear Expert to help you!STEP 1 - STEERER TUBE CHECKConfirm your steerer tube diameter measurement is the 1 ⅛” is standard* and has an existing 10mm spacer under the stem with 5mm clearance above and below. Make note if your stem is 50mm or shorter with a drop that might affect clearance. Click here for a short video on installing the headset spacer. *If your steerer tube is ⅞”, 1”, or 1 ¼” you will need an adapter. If you have a Trek with Knock Block or Scott with Syncros you will need an adapter. 1 ½” steerer tubes are not compatible with the Mac Ride. STEP 2 - FRAME CHECKCheck the toptube and downtube width measurements. Mac Ride fits on frames that are 68mm or less in width without an added spacer adapter.  If your frame size is larger than 68mm width then you will need the e-bike adapter. This comes in Wide (102 mm) and Extra Wide (122 mm).STEP 3 - SEAT POST CHECKMac Ride works with dropper posts and standard seat posts. When using a dropper it must be mounted to the lower part of the seat post that inserts into your bike frame, above the seat post clamp on the frame.  All you need is 20mm of exposed seatpost to clear any hardware on a dropper post. (Never attach your Mac Ride to the “dropper” stanchion of the seatpost)Setting up your Mac Ride once it arrives is an easy process! If you have any questions about fit or assembly please contact a Bambino Gear Expert and we’ll be happy to help!