Tecnigas Silent Pro Exhaust for Vertical Minarelli

DESCRIPTION: Tecnigas Silent Pro Exhaust for Vertical Minarelli 50cc 2-stroke engines found in 2001 and earlier Zuma 50.The Tecnigas Silent Pro exhaust improves torque over the stock exhaust, all while being quiet and maintaining a subtle look. This exhaust is restricted (per European standards) in two places: the header flange and the very end of the tailpipe. Removing these restrictions will improve performance.Head Pipe Bolt Hole Spacing: 48mmHead Pipe Inner Diameter with Restrictor Removed: 24mmIncludes Mounting Hardware and Instructional BookletRemoval of restrictions will give more power. Restrictions are located in the manifold flange and on the silencer.Yamaha