Polini Big Evolution muffler Yamaha-Minarelli engines 70cc

Code: 200.0288

The Polini Big Evolution mufflers were created to make the most of the performance of Big Evolution cylinders for horizontal water-cooled Piaggio and Minarelli engines. The mufflers are available in versions for D. 47.6/70 cc and D.52/84 cc - D.52/94 cc engines. The manifold flange is equipped with 3 holes to perfectly couple to the new cylinder avoiding vents and power losses, the manifold is designed to favor an increase in power over the entire delivery range, the aluminum alloy silencer is black anodized with an increased internal diameter to improve acceleration. The bottom is removable and for the insertion of the sound-absorbing material. An absolute improvement in power and speed on any circuit.

Features:

• Specific for: Aprilia SR50 1993>1996 2T water cooled
• Suitable for Polini cylinders of displacement: 70 cc
• Suitable for Polini cylinders in diameter: 47,6