Chapter
01 |
|
Chapter
01 - Racing Classifications
- 1
- 2 - 3
- 4 - 5
- 6 - 7
- 8
4.2
-
Engines are limited to 40cc with air cooled 3-port cylinder and
single stage reed block. Carburetors will be limited to SHA 14mm. Any stock* 4.2 exhaust
system may be used (Polini 4.2’s are allowed to upgrade
exhaust system to the standard 6.2 stamped pipe). Competitors
may run any production* reed, air box, clutch, wheels, and
tires. Absolutely no modifications to engine exhaust or other
engine components are allowed.
Junior Production (*Up to age
13) – Engines are limited to a maximum of
40cc, air or water cooled, 3-port. Carburetors will be
limited to SHA 14mm. A 14mm restrictor plate must
be installed between the exhaust port on the cylinder and the
exhaust manifold on all bikes with engines that have a dual
stage reed block. |
