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Modern Road Racing
Scott Smallwood
on his little Honda RS125 in Sound of Singles
Two-Stroke.
Photo: Matt Benson |
MODERN ROADRACE
CLASSES
Race
Information
Deadlines:
Pre-entry deadlines typically are the Friday two weeks
before an event. For certain events, pre-entries may close
sooner. Consult the table at the bottom of this page for
exact closing dates.
Race fees -
All events except those
highlighted below:
Race fees for all events, first class $85
each day; each additional class $75.
Post-entry, first class $100 each day; each additional class $75.
NOTE: Each day of racing is a separate event with a
separate fee schedule. DAYTONA: Post-entry: $120 for first class
each day, $75 each
additional class.
Practice days will be available at
most venues on the preceding Friday (see schedule). Cost for
AHRMA-run practice days: Pre-entry or post-entry, $120. For
track-run practice days, contact the track or event
promoter.
Confirmation and event details: Your
entry will be confirmed by mail on receipt. Details such as
directions, starting times and lodging are published in
Vintage Views and by following the "Preview" links on
the schedule at the bottom of this page.
Sound of Singles®
(SOS)
 | Sound
of Singles®2:
Four-valve four-strokes to 510cc and two-valve
four-strokes to 610cc. |
| Sound
of Singles®:
Unlimited displacement four-strokes. |
| Motard Motocross, off-road,
dual-sport and motard-specific four-stroke single-cylinder
machines of unlimited displacement. |
| Sound
of Singles®Two-Stroke:
Two-stroke singles to 550cc. |
Battle of Twins®
(BOT)
| Formula 3 Twins:
Pushrod OHV twins to 1000cc, OHC 2- or 3-valve to 800cc
and OHC liquid-cooled 4-valve to 650cc. |
| Formula 2 Twins:
Pushrod OHV machines to 1250cc, liquid-cooled OHC to
750cc, air-cooled 2-valve to OHC to 1000cc and
air-cooled 4-valve to 1000cc. |
| Formula 1 Twins:
No displacement limits. Engine modifications are
unlimited, except on water-cooled 4-valve twins over
900cc. |
| Open Two-Stroke:
Air-cooled machines to 500cc, water-cooled motorcycles
with tubular frame to 400cc and modern 250cc GP type
machines. |
| Transalantic Challenge:
Supersport rules apply with some exceptions to the Triumph
Thruxton and Harley-Davidson XL883 and XL 1200 Sportster. |
Sound of Thunder®
Unlimited displacement
four-stroke singles; 4-valve demo twins to 1000cc, OHC
twins to 1100cc and pushrod twins to 1350cc;
three-cylinder machines to 1000cc; and twin-rotor rotary
engines.
Click here for
schedule and event entry forms.
Click here for all purpose entry forms and other info.
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