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BIG EVOLUTION 3 MUFFLERS FOR L/C MINARELLI ENGINE :

RACING WARRANT

Polini Motori enlarges its mufflers range with the new Polini “EVOLUTION 3” exhaust system developed to achieved the maximum power of the liquid cooled horizontal Minarelli engines.
In the details this muffler is specific for the Ø47,6 – 70cc Evolution cylinders.

The main technical features are:

• Completely hand-made
• Exhaust manifold flange with 3 holes to couple perfectly with the new cylinder and avoid possible gas escaping and power loss.
• The manifold has been connected with a turned pipe to achieve the Venturi effect and improve the quantity of the gas scavenging and consequently favoring the power increase up to 14.000 rpm.
• The visual look and its dimensions have been studied to have the maximum yield with the TORSEN WD
• The silencer curve can be disassembled; it is possible to insert nozzles of different diameters to increase the engine revolutions.
• The silencer, made of black anodized aluminum is slightly longer to contain noise and varies in the internal diameter which is bigger to improve the acceleration. The base is detachable to change the deadening material.

All these features improve the general engine performance; both in acceleration and
in speed, for a fun drive at all the circuits.

“EVOLUTION” muffler for Yamaha-Minarelli:
Part no. 200.0295 – 70cc Muffler