hey a newbie here. I have an 06 grizz and looking to put on some 26" mudzillas but the dealer was saying anything over 27" need a clutch kit. but after looking at the mudzilla in the shop man is that tire big and heavy will i be fine on putting those on without a clutch kit? and do i run the possibility of breaking anything i do not ride rought but i do go through some good mud and trail ride.