Amazon: fuel filter dirt bike Universal 6mm 1/4" Petrol Gas Fuel Filter For ATV Dirt Bike Go Kart Moped Pocket Bike Oil Gas Fuel Filter (Black) $6 $ 6. 99. Get it as soon as Tue, Jul 9. FREE Shipping on orders over $25 shipped by Amazon. Only 2 left in stock - order soon. Dirt Bike Fuel Filters | Rocky Mountain ATV/MC Dirt Bike Fuel Filters Shop for filters at Rocky Mountain ATV/MC. In addition to filters, browse our full selection of Parts & Accessories. We offer the best customer service in the industry!