Observed Trials Mission Statement

Observed trials is a significant part of historic motorcycle competition. It began as a wintertime sport for European enthusiasts, who tested themselves by tracing ancient Roman roads. These riders negotiated various obstacles along the way, all of which gave test to both man and machine. As the “gentleman’s sport” developed, such obstacles became more specific, and more challenging. From the 1980s until today, the obstacles presented to trials competitors have been inconceivable for most motorcycle riders.

AHRMA’s observed trials goal is to provide its members a safe, historically accurate environment to showcase and experience vintage machinery. The key to this enjoyment is the observed sections. From the 1950s into the ‘70s, sections were mainly composed of wide-open areas of challenging terrain, with the rider’s choice of line determining his/her success. Observed sections reminiscent of this era are critical in AHRMA’s representation of classic observed trials. With period-accurate sections, machines will remain true to their original concept, and the techniques required to ride them will do the same, enhancing the entire vintage trials scene. The trials-riding experience will undoubtedly result in good friends, good rides and good fun.

Information regarding race registration rates, entry deadlines and more can be found on the Schedules & Results page

For other valuable information go to the Forms and Information page

Trials Classes

Note: All classes further divided into Expert, Intermediate and Novice rider ability levels (plus a Master class in Modern Classic). A separate non-points-paying Beginner category is offered for riders on any AHRMA-eligible trials machine.

Girder Fork: Any rigid-frame, girder-fork machine.

Rigid Heavyweight: Any non-swingarm machine utilizing a 301cc or larger, non-unit-construction four-stroke engine

Rigid Lightweight: Any non-swingarm machine, utilizing a two- or four-stroke engine, up to 300cc.

Premier Heavyweight: Certain pre-1965-era machines 350cc and larger.

Premier Lightweight: Certain pre-1965-era machines up to 250cc.

Classic: British kit-framed two-stroke machines up to model year 1974 with 175cc or smaller OEM engine,
and Spanish four-speeds to 250cc in original OEM frame.

Modern Classic: Certain US-model unit-construction machines up to model year 1979.

Modern Twin Shock:  Some post-1979 factory-designed twin shock motorcycles with drum brakes and air cooled engines.