Our Seatpost Adapters quite literally fill the gap, allowing you to fit the seatpost that you have (or want to buy) into a variety of different bike frames. They also allow you to tune the compliance of your bike by fitting a smaller seatpost that offers more flex into a frame with a larger-diameter seat tube. Compatible with rigid, suspension, and dropper seatposts Safe for all seatpost and frame materials Not compatible with bikes that use internal, wedge-style seatpost clamps
