WOSSNER VKS4026A-EXH — Steel exhaust valve designed for the Honda CRF450R (PE05). This kit for motocross includes essential components for the cylinder head: valves and springs, manufactured to withstand the demands of the engine while ensuring smooth exhaust operation.

Designed for demanding riders, the Wössner exhaust valve focuses on the durability of steel to provide longevity and resilience against repeated thermal and mechanical cycles. Its design aims to ensure consistent sealing and valve return when the assembly is installed and adjusted according to manufacturer specifications.

• Manufacturer part number: VKS4026A-EXH
• Brand: WOSSNER
• Kit contents: exhaust valves + springs
• Category: Motocross / off-road competition

Main compatibility:

• HONDA CRF 450 R (PE05) 2004 – 2006 (450 cm³)

Practical advice: check seats, guides, and valve clearance during installation. It is recommended to have the installation performed by a qualified mechanic or engine technician to ensure proper fit and break-in before intensive use.