See: Yokomo

Yokomo have introduced the new aluminium 6° front steering hub carriers for the new YZ-4SF2 . The front steering hub carriers are machined from high-quality aluminium and come black anodized. Comparing with standard caster angle (8 degrees), the caster angle of 6 degrees provides a better cornering performance on high grip surfaces. The use of the new front steering hub carriers will improve the corner exit and offer a more linear feeling. The improved stability makes it easier to maintain the rhythm between corners, and the aluminum rigidity and weight increase the steering feeling.