Billet Big Wheel Kits: Our Conversion Kits: Consist of all parts and hardware needed to replace your (3) wheels with (2) wheels, and placing them inside your rails. Kits come with correct shaft length and shaft sleeve and outside plates. Conversion Relocation Kit is required to perform this conversion unless using custom rails that can accommodate 1 size larger than stock wheels. Conversion Kits - Benefits: As most know, the majority of your sled's weight is on the right-hand inside part of your sled. By running 2 wheels on the inside, you are dispersing your weight more evenly. By dropping the 2 outside wheels, you lose weight and allow the more aggressive mountain riders the agility to carve and boondock, without the outside intrusion of the extra wheels!