Big Bore Kits

[post whore]

Hello everyone.. im new to this forum. i have a 2008 yfz450. so far it has a fatboy4 full exhaust, port/polish head, pro flow, jet kit and stage2 hot cams. i like the power it has but want more. im looking to do a big bore kit real soon. i have been looking at the cylinder works 478cc kit but notice there are other kits available too. i still would like to run pump gas so not to high of a compression. say 12.5? also i just want a straight drop in and ride kit. whats best for what i already have done to my quad?

thanks everyone

[post whore]

and where is the best place to purchase a bb kit? i see kb motorsports alot on here

[misdirected]

bore your carb will help out since the head is p&p and then see how that works out for ya also get a fci intake b4 a big bore and see where that takes ya man cause i see a waste of money going with a bb kit and not raise the compression IMO

[post whore]

whats the highest compression ratio i can go but still run 93 octane pump gas?

[misdirected]

i think is it 12.5 dont hold me to that though

[kb motorsports]

Originally Posted by post whore

and where is the best place to purchase a bb kit? i see kb motorsports alot on here

I'm glad your noticing us!

If you decide to purchase a big bore kit keep in mind the Cylinder Works kit is now only offered in a +2mm kit, and if your heart is set on the +3mm BBkit Athena is your only budget friendly option that is worth purchasing.

YFZ450 Big Bore Kits

[post whore]

Originally Posted by ldjbuff

KB will hook you up!

An FCI would be another option to picking up power as well as a dyno tune. Jet kit? Is that a dyno jet? Cause that will rob ya of power

Dyno jet kit can rob me of power? What the best jet kit then?