Abstract: A snowmobile ski runner has a flat ski runner body. The flat ski runner body has a generally uniform width, a front flat wall at a front thereof, and a rear flat wall at a rear thereof. The front and rear flat walls are parallel to each other. A snowmobile ski assembly having the ski runner and a snowmobile having the snowmobile ski assembly are also disclosed.

Abstract: A snowmobile ski assembly has a ski defining a slot, a ski runner disposed in the slot and being translatable in the slot between a first position and a second position, and a runner adjustment assembly connected to the ski runner. The runner adjustment assembly selectively translates the ski runner between the first and second positions. A snowmobile having the snowmobile ski assembly and a ski runner are also disclosed.