i was at the red river this weekend and saw a z450 run and it runs good.my cousin has a z400 and he is wondering can you still dune ride,mess around,jump or is it reallye just for racing having the 450 kit on th z. because the stock z400 has need some help to keep up with us at the river. and how much does a 450 kit run a good kit

 

prices vary depending on whether your kit just ups the cc or if its a package with cams exhaust carb etc,

wiseco do a kit for $250 or less, thumper do a 470, some kits are dearer because they use an ally sleve with nicasil bore, check out ctracing.com there kits about £1850 but includes everything and gives 53 hp i think,