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2017 OSKCS Rules

The rules stated in the rule book PDF link below shall govern all race events, regardless of location.  Changes and corrections/clarifications may be made at any point throughout the season.  At least 30 days notice or 1 race date passing will be required for rules changes to take affect.

OSKCS 2017 RULES BOOK (PDF) -- Updated April 11th, 2017

2017 Class Specifications Table: The following are the list of official classes for the current OSKCS Championship season. IMPORTANT: See rule book for details, including support for other classes (section 4.2)

LeCont Red Classes

Class Engine Age Tire Fuel Rule Set Wt (lbs)
Kid Kart Comer 50 5 to 7 LeCont Red Gas *1 IKF 160
Junior 1 Briggs Animal w/ Yellow Slide 7 to 13 LeCont Red Gas *1 IKF 260
Junior 2 Briggs World Formula 12 to 15 LeCont Red Gas *1 IKF 325
WF Med. Briggs World Formula 16 up LeCont Red Gas *1 IKF 365
WF Hvy. Briggs World Formula 16 up LeCont Red Gas *1 IKF 390
LO206 Jr. I Briggs LO206 w/ Yellow Slide 7 to 13 LeCont Red Gas *1 IKF 240
LO206 Jr. II Briggs LO206 12 to 15 LeCont Red Gas *1 IKF 320
LO206 Sr. Briggs LO206 15 up LeCont Red Gas *1 IKF 360
LO206 Masters Briggs LO206 30 up LeCont Red Gas *1 IKF 360
Gas *1 - Gas must be non-ethanol, non-oxygenated 92 Octane Gasoline
For above non-LO206 classes, Bridgestone YLP rain tires are required.
For above LO206 classes, Bridgestone YLP or LeCont White rain tires are required.

All Other Classes

Class Engine Age Tire Fuel Rule Set Wt (lbs)
TaG Sr* IKF Region 6 16 up LeCont White, Evinco Red, or MG Yellow Gas *2 SKUSA/IKF 355/365
S2 Shifter 99 Honda CR 125 14 up LeCont White, Evinco Red, or MG Yellow Gas *2 SKUSA 385
S4 Shifter 99 Honda CR 125 30 up LeCont White, Evinco Red, or MG Yellow Gas *2 SKUSA 405
Super Sport 200 Clone 200cc 16 up LeCont Red Pump Gas SS200 380
Rotax Micro Max Rotax Micro Max 7 to 10 Mojo D2 Gas *3 RMCS 235
Rotax Mini Max Rotax Mini Max 9 to 13 Mojo D2 Gas *3 RMCS 265
Rotax Jr. Rotax 13 to 16 MaxOne Blue Gas *3 RMCS 320
Rotax Sr. Rotax 15 up MaxOne Purple Gas *3 RMCS 364
Rotax Masters Rotax 21 up or 190 lbs+ MaxOne Purple Gas *3 RMCS 405
Yamaha Yamaha KT-100 16 up LeCont White Gas *2 IKF  
  w/ expansion pipe         360
  w/ RLV-3 pipe         350
Gas *2 -- One of: VP MS 98, VP VP-110, ERC 110, K&S 110, or VP C-116
Gas *3 -- 92 Octane from [Mac: Texaco near Wilco on 99W. PARC: Wilsonville or Canby Chevron]
The O2s Championship presented by WORD Racing includes TaG, and Shifters. The TaG classes are TaG Cadet, Jr, and Sr. All TaG engines (including old & new Rotax engines) are welcome to participate in the O2s Championship. See their website for details.
For above non-Rotax classes, Bridgestone YLP, LeCont White, MG WT, Vega W5, or Envico WT rain tires are allowed.
For above Rotax classes: Micro and Mini, Mojo CW(cadet) rain tires are required. Rotax Jr, Sr, and Masters, Vega MaxOne rain tires required.
Spec oil for Rotax Classes is Rotax Synthetic Oil mixed between 32:1 and 50:1

4 of the 2-stroke races count towards the O2s Championship - see their website for class specifics

OSKCS 2017 RULES BOOK (PDF)

Typical Race-Day Time Schedule

  • Gates Open - 7:30 AM
  • Practice - 9:00 AM
  • Qualifying - 11:00 AM
  • Races - 12:30 PM

 

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