Baja 5B 34/35cc silenced 2 piece pipe, Max Hp approx 12500 rpm, smooth power delivery, clean reving pipe, comes with all mounting hardware requred . 34/35cc silenced  pipe has a modified internal  baffle plate,  larger outlet and header than the standard version. 
 
Dyno developed performance exhausts, competition tested and proven.
 
Optional extra: Restrictor Insert can be purchased for $19
https://www.olimatengineering.com.au/product-page/restrictor-insert-add-on