2024 Aprilia RS457 vs KTM RC390 vs Ninja 400 vs 450SR ┃ Which 400cc Sportbike Takes the Crown?

- A2 Compliant Models, so ZX-4RR, and CFMoto 450SS are not included. Is the new Aprilia RS457 the new king of 400-cc sport bikes? Find out in this quick comparison between the RS457, RC390, Ninja 400, and 450SR. 0:00 Intro 0:26 Key Specs & Engine 2:49 Features 4:05 Chassis 5:43 Recap Music : ROCK AND RIDE Music from #InAudio: Infraction - Rock and Ride Credits : The Bike Sanctuary Fowlers Motorcycles of Bristol #rs457 #aprilia #ninja400 #kawasaki #cfmoto #450sr #rc390 #ktm