For riders who measure their days in miles, not hours — the Iron Butt Modification is the ultimate upgrade for those who live to ride long and far. Engineered specifically for endurance touring, this is the seat that lets you stay comfortable, focused, and in control mile after mile, day after day.
Every Iron Butt seat is hand-crafted with precision and purpose. We begin by reshaping the original foam to evenly distribute your weight and eliminate pressure points, then build it back up layer by layer using multiple densities of premium memory foam. Each layer is sculpted for maximum comfort and support, then finished with a thin top layer of comfort foam and a waterproof barrier to keep you dry and protected in all conditions.
This is the very same modification trusted by riders who’ve conquered the Lower 48 plus Alaska in just 10 days, logging over 900 miles a day — proof that this seat is built for serious long-distance riders who demand the best.
Your factory seat cover is reinstalled to preserve the OEM look, but the feel is completely transformed — built to go the distance, and then some.