FMF 4 Stroke Mini Factory 4.1 - Full System Tyre Width_100mm flow-through ventilation keeps you cool

flow-through ventilation keeps you cool and more in control when the weather gets rough

Enhanced motorcycle tyre tread pattern

Recesses in the front and rear and BraceOn™ neck brace system allow for over and under the shirt Leatt® neck brace fit

Filter Re-Oiling Amount: 20mm

FMF 4 Stroke Mini Factory 4.1 - Full System Tyre Width_100mm flow-through ventilation keeps you coolWe take fun seriously so we built the Mini Factory 4. 1. This is an all out performance exhaust for play bikes. With the Mini Factory 4. 1, you will be the king of backyard motocross and look great doing it! Superior power on stock and big bore motors Customize with tuning inserts and spark arrestor We recommend all motorcycle parts are fitted and tested by qualified professionals. If you are unsure about the part choice for your bike, please contact