Download the complete California Nights Event Rules document here.
Please take all of your tires and fuel cans with you at the end of the day.
California Nights Classes compete under World Karting Association technical regulations. California Nights Event Rules covers how the race day is run as well as information supplementing the WKA technical regulations. Additional engine- or class-specific rules can be found under the Class Info links below.
Spec Pump Fuel (optional): Must be 87 octane purchased on the morning of the event from the Arco Station at 2985 Rubidoux Blvd. (Hwy 60 @ Rubidoux Blvd. offramp), just west of the track. Must not be mixed with any other fuel.
Driver's Meeting: Meeting start time will be posted on the Race Day Schedule (available for download on the PAK main page). All drivers are required to attend. Random roll calls will be made, violation may result in loss of grid positions. The Pre-Tech Form must be handed in before your kart is allowed on track.
Race Format: The scheduled race day consists of one Warm-Up session, a Qualifying session, two Heat races and a Main event. Finishing order in each round determines starting position for the next round.
Pit Regulations: Insurance wristbands are required for everyone on site, No Exceptions. All minors under age 18 must have a new notarized WKA Minor Waiver filed with Tri-C annually. Pets must be kept on a leash at all times. Except for mobility-impaired the following are not allowed in the pits: Wheeled transportation (bikes, scooters etc.), Games (balls, frisbees, etc.).
Unsportsmanlike Conduct: Physical or verbal abuse on or off the track may result in an immediate Level 2 DQ, with the competitor being suspended and asked to leave the facility.
Adams Motorsports Park: Remember that we are guests at the facility where we hold our events. Please do not exceed 5 MPH anywhere in the pits or parking area.
Information in this list is unofficial.
Download the official California Nights Class Structure document here.
Ages: 5 - 7 yrs.
Weight: 160 lb.
Engines: Honda GXH50
Ages: 7 - 10 yrs.
Weight: 225 lb.
Engines: Micro ROK or Micro Swift
Ages: 8 - 12 yrs.
Weight: 245 lb.
Engines: Mini ROK or Mini Swift
100cc TaG Jr.
Ages: 12 - 15 yrs.
Weight: 320 lb.
Engines: IAME KA100 Restricted
100cc TaG Master
Ages: 35 yrs. & up
Weight: 380 lb.
Engines: Vortex ROK 100 or IAME KA100
Download the KA100 Technical Specifications Document
Download the Vortex VLR100 Technical Specifications Document
Download the Vortex VLR100 Technical Supplimental Document
Download the California Nights Class Structure Document
Download the California Nights Event Rules Document
Ages: 15 yrs. & up
KPV-100: 360 lb. w/ KPV-2 or KPV-3 pipe
KPV-100: 390 lb. KPV-4 pipe
Ages: 15 yrs. & up
Engine: Yamaha KT-100 Piston Port