The experience and the artisan knowledge acquired over a long period in the manufacturing process (care for the detail and obsessive search for quality) of a Yoshimura exhaust will be never reproducible, even by the best bikes.
Yoshimura presents the R11 motorcycle exhaust silencer:

• Exhaust silencer R11 Titanium finish
  
• Single output on the exhaust silencer
• Design: conical
  
• Carbon end cap
• CE certified
• Supplied with a heat shield
  
• An exhaust sound that's more rough and more aggressive
• Warranty: 1 year
• The Yoshimura exhaust silencer is unique to each motorcycle