Polini's expansion bottle differs from other "boost type bottles" due to it being totally sealed and made from ALUMINIUM. It works in the same type of way offering an improved fuel consumption and performance/torque gain and making the best of fuel use at high revs when it's needed.
This part needs to be plumbed directly into the manifold and is supplied with all fixings needed.
WILL NOT work on 4 strokes..
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