Seller notes

POLINI EVOLUTION 3 EXHAUSTIn detail, the muffler is specific for Evolution Ø47.6 cylinders with 70cc displacement. The technical characteristics: Entirely handmadeThe exhaust manifold flange has 2 holes to perfectly match the cylinder in order to avoid possible gas vents and power lossesThe manifold is connected with a turned tube to obtain a Venturi effect and increase the flow rate of exhaust gas evacuation, favoring an increase in power up to 14,000 rpm.The shape and dimensions of the expa...

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