The 1.5" lift kit is great if you are looking to clear larger tires on your 4x4. This lift can be used safely with OEM axles, thus being a very affordable way to gain the necessary clearance for those large mud tires. Axle spacers are not necessary with the 1.5" lift. NOTE: If using stock rims you will need wheel spacers on the rear. Fits: 2005-2010 Arctic Cat 400-1000H2 (TRV's included) does not fit 2015+ Alterra, XT or XR models. call if you have any questions.