CSP Beta Evo Fuel Tank Cap suitable for all 125/200/250/290/300 models from 2009 Onwards. CSP Fuel Tank Cap 2009 - Onwards. Beta Evo 125/200/250/290/300 Models. No need to be losing the vent tube anymore as it has a built in breather allowing air into the tank via a little ball, this also reduces fuel escaping in the event of a tumble.
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