The Tyga website says it best
"Tyga Performance NSR150 SP pipe is just what is needed to unleash the power suffocated by the stock system. Just by changing the exhaust system huge gains can be made and it is designed for easy fitting with no repositioning of bodywork or rejetting necessary."

http://tyga-performance.com/site/product_info.php?products_id=515

Looks like a bolt on and ride away deal to me..........

hope this helps,
lachlan
_________________
........."I love the smell of 2-stoke in the morning.......Smells like victory"............

MC21 Pentax SP...... TYGA'D