Anyone have experience with these? I've heard about FST but can't find their website. Poweroll and others make mild overbore kits as well but I don't know anything about any of them. What I'd like to know is how much power can be expected, ease of install, reliability (most important), etc. I've got an FMF pipe, K&N filter, Warn424 and the quad just feels dog slow. The 424 made a world of difference in "feeling" sporty and feels like it freed up some power down low but now it just makes me want more power. Of course I've been riding a Z400 for awhile.

 

FST makes a 446big bore/stroke kit. It is pretty reliable from what I hear....it is around 650 bucks for the piston and alll the gaskets and stuff, and about 600 for the machining. Putting it together shouldn't be that hard at all....a few things you may need to call FST or ask on here. But nothing you can't do without the right tools.

I will get FST's number for you in a few minutes and post it.

Later,
Warrior68Man

 

1-814-842-6159

 

I know the 439 kit is also a good runnig beast