PKRA Racing Classes

The following is a list of the current classes being raced at PKRA.

Our primary rule set is NKA, but Club rules supersede any other rules.  Examples include Tires, Fuel, minimum Weight,  Ages, and that PKRA requires Neck braces for all drivers in all classes.  Engine Manufacturer rules cover the specifics of each engine (IAME, Vortex, Rotax, etc.).

Beginning with the 2023 Summer Season, PKRA will use Mojo tires for all 2 cycle classes (2 year contract through April 2025).  The 4 cycle karts will continue to use the Hoosier tires (3 year contract through April 2026).  Specific sizes and compounds are called out by class below.

Beginning with the 2023 Summer Season, C9 fuel will be required for all classes.

Minor Age Rules:

  • Drivers that become 8, 12, or 16 during the calendar year (aka competition age), have the option to move to the next higher class at any time during that calendar year (aka option year).
  • Once a driver moves up to the next higher age class in a PKRA club race cannot move back down to a lower age class within Tag or 4-cycle groupings.
  • Parents may pettition to get a waiver to move up early. The process starts by making a request to the board at directors@pkra.com.
  • Kid Karts must not be on the track with any other classes. Junior 1’s may be on the track with Junior 2’s, but no other classes.

Please direct any questions to our Technical director at Tech@pkra.com

CURRENT CLASSES   

These are currently the most popular classes at PKRA and all are eligible for championships except Kid Kart and Novice classes.   To become a championship class, they must average at least 5 entrants per race.   See the racing schedule for more details.

Class Age Description Fuel Spec Oil Weight (lbs) Spec Tire
Kid Kart

LO206

Attn  5
Cmp 8
Birth Certificate required for first race (must be at least 5 years old).  These drivers may receive assistance from corner workers without being DQ’d   Engine: Briggs LO206 Junior with Carb Lock.   555728 0.285 Black slide, Gear: F19:R57, MaxTorque Clutch, 5507 RLV Pipe and others (GX50, Comer, IAME…  email registrar@pkra.com for details)  VP C9 N/A 190 Hoosier R60B 4.5
LO206 Junior 1 Attn 7
Cmp13
Engine: Briggs LO206 Junior with Carb Lock Based on Briggs Rules.  Green slide required. No Driver can sign up for both: LO206 Junior 1 and LO206 Junior 1 Novice,  at the same event VP C9 N/A 245 Hoosier R70 4.5
LO206 Junior 1 Novice 7 – 13 Intended for beginning drivers racing for metals (no championship points).  These drivers may receive assistance from corner workers without being DQ’d – Engine: JR1 spec VP C9 N/A 245 Hoosier R70 4.5
LO206 Junior 2 12-15 Engine: Briggs LO206 Black Slide.  Based on Briggs Rules
VP C9 N/A 310 Hoosier R70 4.5/6.0
LO206 Senior 16+ Engine: Briggs LO206, Based on Briggs Rules
Weight changing to 360 for Winter Race #3
VP C9 N/A 360 Hoosier R70 4.5/6.0
LO206 Heavy 16+ Engine: Briggs LO206, Based on Briggs Rules VP C9 N/A 400 Hoosier R70 4.5/6.0
LO206 Masters 35+ Engine: Briggs LO206, Based on Briggs Rules VP C9 N/A 380 Hoosier R70 4.5/6.0
Rotax Micro Max 8-12 Engine:  Rotax 125 Junior Max (Micro Config), Air Box Required.
Per Rotax Max Challenge Rules – Technical Regulations
VP C9 N/A 255 Mojo D2XX
4.5/4.5
Rotax Mini Max 10-14 Engine:  Rotax 125 Junior Max (Mini Config), Air Box Required.
Per Rotax Max Challenge Rules – Technical Regulations
VP C9 N/A 255 Mojo D2XX
4.5/4.5
TAG 100 Junior 12-15 Engine: Air Cooled 100cc 2-Cycle Restricted, Air Box Required
IAME KA100, Restricted Per IAME KA100 Rules. 22mm Exhaust
Vortex ROK VLR 100cc Restricted Per ROK Rules. Restricted Exhaust
VP C9 Motul Kart GP2T 320 Mojo D2XX
4.5/7.1
TAG 100 Senior 16+ Engine: Air Cooled 100cc 2-Cycle, Air Box Required
IAME KA100,  Per IAME KA100 Rules
Vortex ROK VLR 100cc Per ROK Engine Rules
VP C9 Motul Kart GP2T 360 Mojo D2XX
4.5/7.1
TAG 100 Masters 35+ Engine: Air Cooled 100cc 2-Cycle, Air Box Required
IAME KA100,  Per IAME KA100 Rules
Vortex ROK VLR 100cc Per ROK Engine Rules
VP C9 Motul Kart GP2T 385 Mojo D2XX
4.5/7.1
Rotax Junior Max 12-15 Engine:  Rotax 125 Junior Max, Air Box Required.
Per Rotax Max Challenge Rules – Technical Regulations
VP C9 Rotax XPS 320 Mojo D2XX
4.5/7.1
Rotax Club Max 14+ Engine:  Rotax 125 Junior Max, Air Box Required.
Per Rotax Max Challenge Rules – Technical Regulations
VP C9 Rotax XPS 350 Mojo D2XX
4.5/7.1
Rotax Senior
Max
14+ Engine:  Rotax 125 Senior Max, Air Box Required.
Per Rotax Max Challenge Rules – Technical Regulations
VP C9 Rotax XPS 360 Mojo D5
4.5/7.1
Rotax Master
Max
32+ Engine:  Rotax 125 Senior Max, Air Box Required.
Per Rotax Max Challenge Rules – Technical Regulations
VP C9 Rotax XPS 385 Mojo D5
4.5/7.1
Shifter
12+ Any shifter.  Air Box Req’d.  IAME SSE 175cc or KZ 125cc @ 425 lbs, ROK 125cc @ 395 lbs, Honda 125cc @ 385 lbs, Honda Restricted (S5) @ 335 lbs (12 to 14 year olds) VP C9 Non-
Tech
Per Engine Mojo D5
4.5/7.1

LEGACY CLASSES – WITH LIMITED RACE PARTICIPATION   

You can participate in club races with karts in any of these classes, but be aware that you may be the only one in that class due to the current lack of popularity.  You will be grouped with similar class(es), but scored separately.

Class                              . Age               . Engine Fuel Spec Oil Weight (lbs) Spec Tire Rule Base
Kid Kart Attn _5
Cmp_8
Other 4 and 2 cycle alternatives.
Birth Certificate Required for first race.
VP C9 N/A By
Engine
Hoosier R60B 4.5
GX50 Attn  5
Cmp 8
Honda GX50 VP C9 N/A 160 Hoosier R60B 4.5 Per HPD Rules
Gear: F16:R89
Comer C-51 Attn  5
Cmp 8
Comer C-51
VP C9 N/A 160 Mojo D2XX
 4.5
IAME Kid Kart Attn  5
Cmp 8
IAME
VP C9 N/A 160 Mojo D2XX
 4.5
Per IAME Bambino M1 Rules.
TAG CADET (Micro) 7-10 Mixed engines; Air Box Required VP C9 Mojo D2XX
 4.5
    IAME Micro Swift 7-10 IAME Mini Swift with Micro Header VP C9 Motul Kart GP 2T 225 Mojo D2XX
 4.5/4.5
Per IAME Mini Swift Rules with Micro Header.
TAG CADET (Mini) 9-13 Mixed engines; Air Box Required VP C9 Mojo D2XX
 4.5/4.5
    IAME Mini Swift 9-13 IAME Mini Swift VP C9 Motol Kart GP 2T 245 Mojo D2XX
 4.5/4.5
Per IAME Mini Swift Rules.
    Vortex Mini ROK 8-12 Vortex Mini ROK VP C9 245 Mojo D2XX
 4.5/4.5
Per Vortex Mini ROK Rules
TAG 125 Junior 12-15 Mixed engines; Air Box Required VP C9 Motul Kart GP 2T 320 Mojo D2XX
4.5/7.1
Per individual engine manufacturer rules.
    IAME X30 Junior 12-15 X30 + 29mm factory exhaust restr. VP C9 Motul Kart GP 2T 320 Mojo D2XX
4.5/7.1
Per IAME X30 Rules with restricted exhaust
    Vortex ROK GP Jr. 12-15 ROK GP with restricted exhaust VP C9 Motul Kart GP 2T 320 Mojo D2XX
4.5/7.1
Per Vortex ROK GP Rules with Restricted Exhaust
TAG 125 Senior 16+ Mixed Engines; Air Box Required VP C9 Motul Kart
GP 2T
370 Mojo D5
4.5/7.1
Per individual engine manufacturer rules.
World Formula Jr. II
Limited **
12-15 Briggs World Formula Jr. VP C9 N/A 325 Hoosier R70
4.5/6.0
Per Briggs Except Blue Ignition and Optional Clutch **
World Formula Senior
Limited **
16+ Briggs World Formula VP C9 N/A 365 Hoosier R70
4.5/6.0
Per Briggs Except Blue Ignition and Optional Clutch **
World Formula Masters
Limited **
40+ Briggs World Formula VP C9 N/A 400 Hoosier R70
4.5/6.0
Per Briggs Except Blue Ignition and Optional Clutch **
** World Formula “Limited” PKRA local classes allow running a Blue Ignition and allow any Drum/Can clutch (as with LO206 rules). All other Briggs World Formula rules are followed.