450 kit for z400 [Archive] - ATV Riders Forum

trent03z400

04-19-2006, 12:46 PM

I am thinking about getting a 450 kit put on my z400. Wondering if anyone else has this setup and if they have had any problems with it.

xRWMx

04-19-2006, 02:27 PM

I just got my yoshi 450 kit installed and now the quad rips. the kit comes with cams and rev box aswell. they say it puys 50 hp to the wheels but it will be in mid 40's

trent03z400

04-19-2006, 02:52 PM

Where can i get one? How much does it cost?

04-19-2006, 04:11 PM

go to yoshi website...i hope you have ALOT of spare change laying around...i think they are around 2000 with installation..correct me if i am wrong

trent03z400

04-19-2006, 05:19 PM

thanks but I think I found a better deal. Tudorsperformance.com install 450 kits and cams for 1200.

rrguy

04-20-2006, 06:05 AM

If you do not do any crank/ rod work - stroke changes it is much cheaper. You can actually get 435cc - 440cc for around $300. 450cc around $500 with aluminum sleeve. Not including labor to assy or other parts, such as cams, carb.

firstturn

04-21-2006, 07:48 PM

xRWMx, I have recently installed a Yosh 450 kit as well. I still haven't got the jetting totally dialed. It works well almost everywhere, except if I am at full idle and try to go to full open throttle as fast as I can, this causes the engine to cough and almost die. I am using a FCR40 carb. What did you end up with for jetting?