KTM 390 Adventure vs Royal Enfield Himalayan 450: Which ADV Should You Buy in 2025? 2025 KTM 390 Adventure and Royal Enfield Himalayan 450 target the same sub-500cc ADV buyer, but they deliver very different experiences: the KTM is sharper, lighter and more tech-heavy, while the Himalayan is comfier, more rugged and easier on the wallet.​ Engine, performance and dynamics The 2025 KTM 390 Adventure uses a new 399 cc single-cylinder engine derived…