| Lights -
Headlight,
taillight, and turn signals must be removed. Tape may not be
used. |
| |
Number
Plates - Number
plates are an important part of racing; they help the scorers
correctly identify riders. Numbers that are too small or
difficult to read increase the risk of scoring issues. Number
plates must adhere to the specifications described in the AMA
Sports Rules, Chapter 3, Section C.15.
|
| Number plates or
number display areas must be of adequate area to provide ample
space (approximately 1") around and between numbers. They should
be white with black numbers, black with white numbers, and past
champions may run red plates with white numbers. |
| |
| Tires -
Tires permitted in competition must meet the following criteria
(unless otherwise specified by class requirements): |
| (1) Class "C"
dirt-track tires |
| (2) Road-race
slicks |
| (3) Cut road-race
slicks |
| (4) Road-race rain
tires |
| (5) Any DOT tire |
| Knobby Tires are
prohibited. The race referee reserves the right to impound tires
at anytime during a meet for whatever inspection and/or testing
it deems necessary. |
| |
| Fluid
Containment -
Oil filter bolts must be secured with safety wire. Spin-on oil
filters must be secured with metal clamps and safety wire. |
| Oil filler caps
and oil lines must be safety wired, or secured by an approved
method. |
| All machines must
have a catch device attached and will have the carburetor
overflow/vent lines running into it. The crankcase breather
lines are also required unless the lines are vented to the air
box. The vent lines coming out of the engine must be routed into
a heat-resistant catch device of at least 177 mL (6 ounces)
capacity that is not made from a drink container. |
| |
|
Rules - Competition Apparel |
| The following
apparel must be worn by riders in ALL events. |
| |
| Helmet, boots, and
face shield / goggles are required as described in the AMA
Sports Rules, Chapter 3, Section E. |
| |
| Riders must wear
helmets at all times when riding on the course. |
| |
| Gloves may be made
of leather or other protective material and must be worn while
the motorcycle is on the racetrack. |
| |
| Riding Suit |
| (1) One-piece or
two-piece (upper and lower pieces must be securely attached
together) riding suit made of leather or Kevlar are highly
recommended. |
| (2) Riders may use
commercially manufactured motocross jerseys and pants provided
they are constructed with, or used in conjunction with, elbow
pads, knee cups and hip pads. A commercially manufactured
chest/back protector must be worn with motocross apparel. |
| |
|
Rules - Bike Tech - Quick Notes |
- 5 or 6 inch black
numbers on white back ground. No electrical tape.
- Crank case and radiator breather and overflow must go in catch
tank, sealed air box permitted.
- There should be no Radiators. For joint events they must run water or non-damaging track coolant.
- Safety wire - Drain plug, oil filler, radiator cap, coolant
drain, caliper mounting bolts, and chain master link
|
| |
|
Rules - 4-Stroke AirCooled Classes Only |
| Air Cooled:
A, B, or C level rider on single cylinder machines with a
maximum displacement of up to 158cc (air cooled 4-stroke only),
otherwise unlimited modifications, with the exception that they
must maintain a mini chassis. Maximum wheel diameter, 19" front,
17" rear or minimum size no smaller than stock. Minimum age 12.
The only exception is that riders under 12 may enter with 5
years or more of racing experience. |
| |
| XR100 Dirt:
A, B, or C level rider on and XR/CRF 100 machine with a maximum
displacement of 132cc (4-stroke). Original crankcase, head, and
original stroke. Modifications are allowed to stock air box,
suspension, chassis, exhaust, tires, gearing, jetting,
handlebars, hand guards (non-metal, open-ended are recommended),
levers, grips and cosmetics, and after-market brake pads may be
used. Minimum age 9. Sport Mini may bump to XR100 Cup if bike
meets rules. |
| |
| Sport Mini:
C level or Novice rider on single cylinder machines with a
maximum displacement of 158cc (4-stroke).
Original crankcase, cylinder and heads and original bore,
stroke, and displacement must be retained. Modifications are
allowed to stock air box, suspension, chassis, exhaust, tires,
gearing, jetting, handlebars, hand guards (non-metal, open-ended
are recommended), levers, grips and cosmetics, and after-market
brake pads may be used. Minimum age 9. Sport Mini may bump to
AirCooled. |
|
|
There is no dirt section for the following
classes
|
| Open Pit Bike:
A, B, or C level rider on single cylinder machines with a
maximum displacement of 158cc (4-stroke),
otherwise unlimited modifications. Maximum wheel diameter is 14
inches and the minimum size no smaller than stock. Modifications
are allowed to stock air box, suspension, chassis, exhaust,
tires, crank cylinders, gearing, jetting, handlebars, hand
guards (non-metal, open-ended are recommended), levers, grips
and cosmetics, and after-market brake pads may be used. Minimum
age 12. Stock wheel sized XR/CRF80s may run the class. |
| |
| GP80: A, or
B level rider on single cylinder machines with a maximum
displacement up to 158cc (4-stroke),
otherwise unlimited modifications. Minimum age 12. The only
exception is that riders under 12 may enter with 5 years or more
of racing experience. |
| |
| GP50: A, B,
or C level rider on single cylinder machines with a maximum
displacement up to 120cc (4-stroke),
otherwise unlimited modifications. Minimum age 12. The only
exception is that riders under 12 may enter with 5 years or more
of racing experience. |
| |
| XR100 GP: Same rules as XR Dirt but this will be the GP version of that class. |
