If you have a Cane Creek Thudbuster ST seatpost, this soft elastomer insert is exactly what you need to refresh your suspension! The G4 soft elastomer provides that plush, smooth ride the Thudbuster is known for, absorbing bumps and vibrations from rough terrain. Over time, elastomers can wear out and lose their effectiveness, but replacing them brings your seatpost back to like-new performance. Installation is straightforward if you're comfortable working on your bike - just follow the manufacturer's instructions for your specific Thudbuster model. The soft version is perfect for lighter riders or those who prefer maximum comfort over firm support. Whether you're dealing with trail chatter, rough roads, or just want a more comfortable ride, this replacement elastomer makes a noticeable difference in how your bike feels. The quality matches the original equipment, so you're getting the same performance Cane Creek designed for their suspension seatposts. It's a relatively inexpensive way to maintain your bike's comfort system without replacing the entire seatpost. The elastomer material is durable and should last through plenty of rides before needing replacement again. If your current ride feels harsher than it used to or you're bottoming out more frequently, this soft elastomer could be the refresh your Thudbuster needs to restore that smooth, suspended feel.