2009 Aprilia Mana X

All-rounder

Water cooled, 839cc, 90° V-twin

2007 Yamaha Tesseract Concept

Others

Water cooled, 60° V-twin, SOHC

2007 Harley-Davidson XR 1200 Concept

Oil/air cooled, 1200cc, 45° V-twin, OHV

2009 Yamaha PAS er

Electric