Sport Rider Photos
Race kit swingarm is a far beefier piece than the stock unit. Note the usual trickery such as captured sprocket/axle holders for quick rear wheel changes, and tire temperature sensors (two small red boxes) to measure tire heat at different portions of the track. You can also see in this photo how the bulk of the aluminum fuel tank is directly underneath the seat.
Yamaha World Superbike Team - Behind the Scenes