What piston kit?

[Extremerider]

Which piston kit for the 400EX allows u to bore it to a 426 and still use regular gas?http://www.moto-man.com/category_atv.pg?cat=@Piston%20Kits (http://)

Where can u buy a 686 kit for a raptor and still run stock compression? Thanks

[Silverfox@C&DRacing]

The 426 piston kits come in 11:1 compression if you use a standard thickness gasket you can use premium pump gas.

The 686 kit comes in 10.75:1 compression pretty close to stock, We have installed a couple of the 686 kits 12:1 compression and other goodies and the customers have been very pleased.