I installed Seaspension posts on my 2510xl last year. Really smoothes out the ride and well worth the money especially if your running offshore and in sloppy seas. Call the guys down at Seaspension.... They are very helpful and talk you through all your questions and give installation help as well. Just remember they are in business to sell. I think Parker has now offered the posts as an option. Be aware they sell 2 different "stiffness" versions. The normal one is usually for hard core offshore racing types..... Mine are the lighter versions and are just fine. They can tell you where you can see and test out their products at a dealer near you hopefully. Good luck