Just bought one, totally standard with a 125cc engine. I want to put one of these exhausts on:
http://www.sip-scootershop.com/EN/Products/AB-VBB/Racing+exhaust+replica+sport+.aspx
What size main jet would you uprate to ?
Hi,
with this exhaust go about 5-10% bigger in main jet size
Better for performance will be this kit :
http://www.sip-scootershop.com/DE/Products/10003000/Rennzylinder+DR+177ccm+.aspx
Regards