Equipment list

400cc Motorcycles

400cc motorcycles from 365 to 415cc: every confirmed model with model years, power, weight and a link to its full buyer's guide on NastyNils.

By · Updated 2026-10-30

400cc Motorcycles
Photo: Triumph press archive

Displacement is the combined swept volume of all cylinders, and it’s the figure riders use to sort motorcycles into size classes. But the class only tells you so much: inside it, power, weight and character still differ widely with the number of cylinders, the state of tune and the type of bike. Twelve brands share this one, from CFMOTO and KTM to Royal Enfield and Yamaha.

When one of these bikes interests you, pin down the exact generation and model year of the one you’re looking at. Then check its confirmed displacement: a bike counts by that figure, not by the number in its model name. Scooters don’t make the list, and neither does any motorcycle whose confirmed displacement falls outside the range.

Every motorcycle below has an engine of 365 to 415cc from the factory, confirmed against manufacturer information. Where a trim or special edition shares it with the base bike, only the base bike is listed. A model that is missing here may still have it; it means we have not confirmed it yet.

Standard from the factory

30 model lines by category, 18 still in production or built until last year

Adventure

Earlier adventure models (2)

Enduro

  • KTM 390 Enduro R

    The Enduro Name Fully Earned

    2025– · 399 cc · 45 hp · 364 lb wet

  • Suzuki DR-Z4S

    Built Serious For Dirt

    2025– · 398 cc · 38 hp · 333 lb wet

Earlier enduro models (4)

Naked Bike

Earlier naked bike models (2)

Retro Classic

Earlier retro classic models (1)

Scrambler

Earlier scrambler models (2)

Supermoto

  • KTM 390 SMC R

    Small Package, Pure Hooligan

    2025– · 399 cc · 45 hp

  • Suzuki DR-Z4SM

    The Easygoing Street Hooligan

    2025– · 398 cc · 38 hp · 340 lb wet

Supersport

Earlier supersport models (1)