Camber is the angle of the wheel off vertical when looking at it from the front or rear of the quad. If the top of the tyre appears to be leaning in towards the centre of the quad, it has negative camber. Leaning away from the centre of the quad at the top of the tyre is positive camber.
Most quads run from one to four degrees of negative camber.
Less camber will hold a good line in rough terrain, but will push’ in a corner known as under steer.
With more camber will make the bike turn well in corners with a lot of traction but will also make it grab ruts and follow grooves in the track.
A general MX set up is 3 degrees negative camber. All riders have preferences either side of that, but this is a good starting point.
Put a straight edge vertically against the rim and check the angle with an angle gauge. The rims must be straight, not buckled, or you’ll get a false reading.
On the KTM A-arms, both camber and caster are adjusted with heim joints that mount to the chassis on the top A-arms. We adjust the camber on these A-arms by removing the pivot bolts and winding both top heim joints in or out equally.