2025 Yz450f Specshop. Yamaha took the championship winning yz450f and made it even better—more powerful, lighter, slimmer, with enhanced overall stability and more agility than ever! The yamaha yz450f 2025 has a 13.0:1 compression ratio, 450cc displacement,.

Because the best don’t rest. Yamaha took the championship winning yz450f and made it even better—more powerful, lighter, slimmer, with enhanced overall stability and more agility than ever!