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 2025 Summer Season, Pickle Juice 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.
The Rotax Club class has been retired, and is no longer an option at PKRA.
Beginning with the Summer Season, the Spec Fuel will change to Pickle Juice.
| 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. 4100rpm limiter 555728 0.285 Black slide, Briggs Rules. Gear: F19:R57, MaxTorque Clutch, 5507 RLV Pipe and others (GX50, Comer, IAME… email registrar@pkra.com for details) | PJ Mild 91 | 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 | PJ Mild 91 | 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 | PJ Mild 91 | N/A | 245 | Hoosier R70 4.5 |
| LO206 Junior 2 | 12-15 | Engine: Briggs LO206 Black Slide. Based on Briggs Rules |
PJ Mild 91 | N/A | 310 | Hoosier R70 4.5/6.0 |
| LO206 Senior | 16+ | Engine: Briggs LO206, Based on Briggs Rules | PJ Mild 91 | N/A | 360 | Hoosier R70 4.5/6.0 |
| LO206 Masters | 35+ | Engine: Briggs LO206, Based on Briggs Rules | PJ Mild 91 | 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 |
PJ Mild 91 | N/A | 230 | 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 |
PJ Mild 91 | N/A | 255 | Mojo D2XX 4.5/4.5 |
| Rotax Junior Max | 12-15 | Engine: Rotax 125 Junior Max, Air Box Required. Per Rotax Max Challenge Rules – Technical Regulations |
PJ Mild 91 | Rotax XPS | 320 | 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 |
PJ Mild 91 | 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 |
PJ Mild 91 | 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) | ??? | 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 / Descrip. | 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. |
PJ Mild 91 | N/A | By Engine |
Hoosier R60B 4.5 | |
| GX50 | Attn 5 Cmp 8 |
Honda GX50 | PJ Mild 91 | N/A | 160 | Hoosier R60B 4.5 | Per HPD Rules Gear: F16:R89 |
| Comer C-51 | Attn 5 Cmp 8 |
Comer C-51 |
PJ Mild 91 | N/A | 160 | Mojo D2XX 4.5 |
|
| IAME Kid Kart | Attn 5 Cmp 8 |
IAME |
PJ Mild 91 | N/A | 160 | Mojo D2XX 4.5 |
Per IAME Bambino M1 Rules. |
| LO206 Heavy | 16+ | Engine: Briggs LO206 | PJ Mild 91 | N/A | 400 | Hoosier R70 4.5/6.0 | Based on Briggs Rules |
| TAG CADET (Micro) | 7-10 | Mixed engines; Air Box Required | ??? | Mojo D2XX 4.5 |
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| IAME Micro Swift | 7-10 | IAME Mini Swift with Micro Header | ??? | 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 | Mojo D2XX 4.5/4.5 |
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| IAME Mini Swift | 9-13 | IAME Mini Swift | Motol Kart GP 2T | 245 | Mojo D2XX 4.5/4.5 |
Per IAME Mini Swift Rules. | |
| Vortex Mini ROK | 8-12 | Vortex Mini ROK | ??? | 245 | Mojo D2XX 4.5/4.5 |
Per Vortex Mini ROK Rules | |
| TAG 100 Junior | 12-15 | Engine: Air Cooled 100cc 2-Cycle Restricted, Air Box Required IAME KA100, Restricted 22mm Exhaust Vortex ROK VLR 100cc Restricted Exhaust |
PJ Spicy 100 | Motul Kart GP2T | 320 | Mojo D2XX 4.5/7.1 |
KA100 per IAME Rules.
VLR per ROK Rules |
| TAG 100 Senior | 16+ | Engine: Air Cooled 100cc 2-Cycle, Air Box Required IAME KA100 Vortex ROK VLR 100cc |
PJ Spicy 100 | Motul Kart GP2T | 360 | Mojo D2XX 4.5/7.1 |
KA100 per IAME Rules.
VLR per ROK Rules |
| TAG 100 Masters | 35+ | Engine: Air Cooled 100cc 2-Cycle, Air Box Required IAME KA100 Vortex ROK VLR 100cc |
PJ Spicy 100 | Motul Kart GP2T | 385 | Mojo D2XX 4.5/7.1 |
KA100 per IAME Rules.
VLR per ROK Rules |
| TAG 125 Junior | 12-15 | Mixed engines; Air Box Required | ??? | 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. | ??? | 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 | ??? | 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 | ??? | 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. | PJ Mild 91 | 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 | PJ Mild 91 | 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 | PJ Mild 91 | 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. | |||||||