Class No limit:
All modifications on bikes in this class are permited, and all kind of riders can compete.
This class is intended for riders with racing license.

Class ProSerial
The pilot with licence can't drive in this category.Only bikes with road license plates are allowed. Proserial class will be driven together with Serial class (headlight on) but it will start after Serial class, on the spot where Serial class ends the race.Minium number of pilots is 5 otherwise this class can't have any scores.
Forbidden modification : brakes (apart lines plaiting), road tires, engine. It is also forbiden to take of the battery and starter, adding a quick shifter or complete change of shock absorbers.Power Commander is not allowed.
Allowed modifications: inside parts of shock absorbers, engine oil, body-shields, headlights (lenses only), foot rests, exhaust, air filter, windshield, transmission.

Class Serial:
This class is intended for riders without racing license or amateur riders. Modifications on bikes are strictly limited.
Obligations are lights turn on. All bikes that don't fulfill conditions for that class, or don't pass tehnical exam are removed into NO LIMIT class.
Forbidden modifications:
1. front and rear suspension
2. brakes
3. wheels
4. kevlar-karbon plate
5. unserial lights
6. slick tyres
7. engine tuning
8. removing electrical starter, battery or alternator
9. removing passenger seat

Permited modifications:
1. exhaust system
2. brake pipes
3. steering wheel suspension
4. removing blinkers and mirrors

Class Classic:
Limitations: Max. two valves per cylinder, air cooled engine, carburetion fuel system (no fuel injection)

Class Old-Timer:
Bikes with drum brakes (no discs)

If there is less than 3 riders in one class, there will be no points in that class.

Special price Old Boys:
Riders above age of 45

Special price Lady: fastest lady

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