
BLACKBIRD Seat Foam +15mm — Special Cross, manufacturer reference 4E01. This Blackbird seat foam is designed for riders seeking a simple and reliable height adjustment without altering the original seat shell. Made from closed-cell expanded polyurethane, it does not absorb water and retains its characteristics over time, even in muddy and wet conditions typical of motocross terrain.
The +15 mm version provides a 1.5 cm lift compared to the original foam, useful for adjusting the riding position, refining motorcycle control, or increasing movement range during trajectory changes. Developed with the help of top teams from world championships, it is perfectly interchangeable with original seat foams for easy installation without modifications.
Examples of compatible motorcycles: SHERCO 500/450/300 SEF FACTORY (2026). Manufacturer reference: 4E01. Ideal for riders looking to adjust their seat geometry without compromising on durability.