Our 36" fuel line hose for 48cc - 80cc 2-stroke bicycle engine kits features plenty of extra length so that you can cut it down to the size you need, plus some additional length to spare. This 36" fuel hose has a 5 mm inner diameter and an 8 mm outer diameter.
In addition to its gas bike conversion application, this size is typically used on Chinese built 50cc GY6 139QMB engines. It is adaptable enough to fit many other sizes and applications of ATVs, go-karts, scooters and other power sports vehicles.
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