VPP (Virtual Pivot Point) suspension designs balance different forces to eliminate unwanted compression without limiting bump absorption. The downward force on your pedals pushes most full suspension bikes down, resulting in unwanted suspension compression. VPP bikes use a patented link configuration and axle path to apply some of the pulling force from the chain to counteract that motion caused by pedaling. Because the forces are balanced, VPP bikes remain able to absorb bumps when pedaling, unlike other designs that effectively lock out the rear suspension by applying too much chain pulling force. What you end up with is plush travel with no pedal-induced compression or lockout and no need for manual lockouts or other compromises.(Answer courtesy of Santa Cruz Uk).
For more information, please visit the Santa Cruz Bikes website www.santacruzmtb.com