Originally Posted by Slo-MTX4
I have just put my new Evo 3 in the 4 and it fitted with brand new tyres straight out of the box, so as far as i can see no you shouldnt have any dramas.
broke a conrod on my sirio the other day, what is the max temp (in celcius) you would feel comfortable running the motor at race temp? i am using runner time fuel and a sirio pipe on a mtx4 with standard gears amd 61mm type-ish diameter foam tyres.