Photographs of the Red Square Kawasaki ZX10R Masters Cup races at the Extreme Festival race meeting at Zwartkops Raceway on 21 February 2015. Back to Extreme Festival Gallery no images were found Back to Extreme Festival Gallery Share this...FacebookTwitterLinkedinPinterestStumbleUponDiggReddit Tags: Zwartkops Raceway, Extreme Festival, Kawasaki ZX10R Masters Cup, Red Square