For a long time now race bikes have run &quot;regressive rate&quot; rear suspension linkages. The geometry of the suspension is set up so that when you&#x27;ve got the ~2G of force vertically down on the rear suspension (from the bike&#x27;s frame of reference) that a ~60degree lean angle turn implies - the effective spring rate is significantly less than when the bike is upright and the suspension is riding higher under only 1G of load. While it can&#x27;t resolve the 90 degree degenerate case, it&#x27;s easy enough to tweak the geometry so you&#x27;ve still got known and desired levels of &quot;suspension working&quot; at 60ish degrees. (Handwaving away the complexities of component flex and stiction - which really is black magic.)<p>Note this is opposite to what many road oriented motorcycles use - progressive rate springs and linkages are often used to allow &quot;more supple&quot; suspension around normal riding circumstances while still having enough suspension force to deal with bumps while overloaded or leaned over hard. Race bike don&#x27;t have to have any consideration for rider comfort &quot;suppleness&quot; or bumps&#x2F;potholes. The sole purpose of the suspension on a race bike is to maximise the tire&#x27;s contact to the track.