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Class
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Description
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30+ Pre-75
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Riders 30 years and older on any 1974 or earlier machine
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40+ Pre-75
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Riders 40 years and older on any 1974 or earlier machine
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50+ Pre-75
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Riders 50 years and older on any 1974 or earlier machine
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Pre-75 125
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Any 1974 or earlier 125 cc machine
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Pre-75 250
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Any 1974 or earlier 250 cc machine
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Pre-75 Open
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Any 1974 or earlier 251 - Open cc machine
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40+ Evo
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Riders 40 years and older on any Evolution machine - see description below
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30+ Vintage 80's
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Riders 30 years and older on any Vintage 80's machine - see description below
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Pre-78
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Any machine 1975 – 1977 and like design
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Evolution 200
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100 - 200 cc air cooled, drum brake and non-linkage suspension
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Evolution Open
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201 - Open cc air cooled, drum brake and non-linkage suspension
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GP Classes |
Extra laps
in these classes. No ability levels. To ride this class, riders
must also be entered in one or more other ACR classes. Bike
eligibility for each
GP division is determined by displacement, not engine type (2-stroke, 4-stroke) i.e; no
250f machines in the 125 GP class, no 450f machines in the 250 GP class. The GP classes are as follows: |
Pre-75 125 GP |
1974 and earlier 125 cc machines only. |
Evo 125 GP |
Evolution 125 cc machines only. |
Vintage 80's 125 GP |
Vintage 80's 125 cc machines only. |
125 GP |
1990 and newer 125 cc machines only. |
250 GP |
126-250 cc machines only. |
Open GP |
251-Open cc machines only. |
|
Vintage 80's |
Machines 1980 - 1989,
period modifications allowed, like design rule does not apply. The Vintage
80's classes are as follows:
|
Vintage 80's 200 |
100-200cc machines
only. |
Vintage 80's Open |
201-Open cc machines
only. |
| Vintage 90's
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All bikes made from 1990 - 1998. All period
modifications are allowed. As in the Vintage Eighties Class, like-design
machines are not allowed, just 1990-99 machines. |
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ACR Modern
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125 - Open cc machines through current model year. To ride this class riders
must also be entered in one or more vintage classes.
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Women
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Riding any 85 cc and up machine.
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Junior
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Riders 12-15 years of age with an ACR parent/guardian and an air-cooled, drum
brake, non-linkage 125cc machine
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Mini
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0-99 cc two stroke, 0-150 cc four stroke, no full size wheels (18" & 21")
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Pre-75 Minibike |
For all domestic & imported minibikes with a maximum wheel size of 16". Engine size limit will be 100cc for 2-strokes & OHV 4-strokes. No limits for flathead motors. Suspension travel will be limited to 4" front & 3" rear.
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Greenhorn Class
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For non-racers with no
race experience and modest riding ability. A fun, non-stressful
class for spouses & little ones riding small playbikes and
pitbikes from 50 - 125cc with no full-size wheels. Race bikes are
not allowed. Minimum age is 8. No maximum age limit. Here's the
perfect way to get your spouse and kids involved out on the track in
a safe & friendly non-competitive
atmosphere.
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