Enduro · Classic · VMX · 3 min read

E1, E2, E3 – and what Classic actually means

A 250 cc two-stroke enduro and a 250 cc four-stroke can share a world championship class in 2026. Historic motorcycles are classified by different criteria. Here is how to read modern enduro and classic rulebooks.

AMZ Racing GmbH editorial team · checked 7 November 2026

Why enduro is more than laps in the dirt

Enduro combines riding skill with the task of completing a route to a prescribed schedule. Connecting sections and time checks provide the framework; special tests measure speed. One fast test therefore does not explain the whole result.

That combination of reliability and speed has a history. The international Six Days began at Carlisle in 1913. Today’s ISDE stands for International Six Days of Enduro; older sources use ISDT. Historic event names can therefore help locate a story in its period.

[1][2]

The number describes a class, not a rider’s level

E1, E2 and E3 are technical divisions in the enduro world championship. EnduroGP is the combined overall classification drawn from those classes. E3 does not mean a third division, and an E1 rider is not automatically a beginner. Results can place the same rider in both a motorcycle class and the overall standings.

The season matters: the 2026 FIM sporting regulations place two-strokes and four-strokes up to 250 cc in E1. A familiar older shorthand limited to 125 cc two-strokes does not fully describe this world championship season. A 350 cc four-stroke falls in the E2 range instead. Do not transfer that allocation to national events without checking their rules.

[3][4]

Electric motorcycles need their own technical allocation

For 2026, the world championship opened EnduroGP and E1/E2/E3 to Electric Power Vehicles, or EPV. Allocation follows the electric regulations and published EOT/BoP provisions, rather than an invented cylinder capacity. That admission does not automatically extend to junior, youth, women’s or Open classifications.

This illustrates how to read a rulebook: a new powertrain does not simply fit every existing class. The combination of sporting rules, technical requirements and the event determines where a machine may compete.

[4]

Classic describes a technical period

At the 2026 FIM Enduro Vintage Trophy, the categories are Classic 75, Classic 79, Classic 83, EVO 1986 and Open 1991. The years refer to motorcycle manufacture. Period-correct construction and technical exceptions remain additional conditions. “Up to 1991” is therefore not blanket permission for every modified machine.

The Veterans Trophy is a team classification with rider-age requirements instead. Motorcycle age and rider age are separate axes. This is useful to spectators as well as entrants: an age group does not identify the machine in front of you.

[5]

Twinshock and EVO in motocross

VMX, or Vintage Motocross, is a common umbrella term. Actual eligibility depends on the organiser’s rulebook. The 2026 ECMX rules, for example, give Twinshock a cut-off through 1983 alongside requirements for cooling, brakes and suspension. They also name exceptions.

AMCA uses its own model and component tables for British classic scrambles, including Pre65. Comparing only the year in the class name misses these differences. A motorcycle combining an old frame with newer parts does not become an eligible classic racer from its frame number alone.

[6][7]

Classes compared

FIM EnduroGP 2026 and selected historic rulebooks; 2T = two-stroke, 4T = four-stroke. FIM limits follow Article 62.21; technical provisions also apply.
Term	What is classified?	Rules example	Source
E1	Motorcycle, 2026 world championship	Up to 250 cc, 2T and 4T; EPV governed separately	[3]
E2	Motorcycle, 2026 world championship	255–450 cc 4T; EPV governed separately	[3]
E3	Motorcycle, 2026 world championship	Over 255 cc 2T or over 455 cc 4T; EPV separately	[3]
Classic 75 / 79 / 83	Historic machine, 2026 EVT	Manufacturing cut-off plus technical rules	[5]
Twinshock	Historic MX class, 2026 ECMX	Through 1983; construction and exceptions matter	[6]
Pre65	Classic scrambles, 2026 AMCA	Specific model and component tables	[7]

How the names developed

1913
International Six Days at Carlisle
The reliability trial forms a historic starting point for modern enduro.
[1]
1968 → 1990
From European title to world championship
The FIM dates the individual European Two Days Championship to 1968 and world championship status to 1990.
[8]
2004
Three classes replace multiple capacity groups
E1, E2 and E3 simplify the classification of that period. Their later limits remain season-specific.
[9]
2026
New powertrains in the overall classification
EPV are admitted to EnduroGP and E1/E2/E3 under specific technical conditions.
[4]