PKRA Racing Classes

The following is a list of the current classes being raced at PKRA.
Note that you will register for the particular class (left-most and bolded), and not the specific engine.  For example Tag100 Senior, Shifter -Spec125, Kidkart – Other.  If there are differences in weight, they will be marked on your pre-tech tag in pre-tech.

Our primary rule set is that of the sanctioning body, but Club rules supersede any other rules.  Examples include Tires, Fuel, minimum Weight,  and Ages.  Engine Manufacturer cover the specifics of each engine (Honda, IAME, Vortex, etc.)

Our tire contract with Evinco ends April 30, 2020, and we will be using Hoosier tires as the PKRA spec tire beginning with the 2020 Summer Season.

POPULAR CLASSES   

These are currently the most popular classes at PKRA.  All but the Shifters classes see participation at all races, and all but the Shifters and Tag100 Junior are expected to be championship classes (i.e. average at least 5 entries per race).  We often see groups of 5 or more shifters, but only at certain races.

Class                               . Age Engine Fuel Spec Oil Weight (lbs) Spec Tire Rule Base
Kid Kart – GX50 Attn  5
Cmp 8
Honda GX50
(See Kid Kart – Other below for other alternatives)
VP110 N/A 160 Hoosier R60B 4.5 Per HPD Rules
Gear: F16:R89
LO206 Junior 1 Attn 7
Cmp13
Briggs LO206 Junior with Carb Lock VP110 N/A 235 Hoosier R70 4.5 Based on Briggs Rules.  Blue slide required.
LO206 Junior 2 12-15 Briggs LO206 Junior with Carb Lock VP110 N/A 310 Hoosier R70 4.5/6.0 Based on Briggs Rules
LO206 Senior 16+ Briggs LO206 VP110 N/A 360 Hoosier R70 4.5/6.0 Based on Briggs Rules
LO206 Masters 40+ Briggs LO206 VP110 N/A 380 Hoosier R70 4.5/6.0 Based on Briggs Rules
TAG 100 Junior 2 12-15 Air Cooled 100cc 2-Cycle Restricted
Air Box Required
VP110 Motul Kart GP 2T 320 Hoosier R60B
4.5/7.1
Per Engine Mfg Rules
Restricted Exhaust
     KA100 Jr2 12-15 IAME KA100, Restricted VP110 Motul Kart GP 2T 320 Hoosier R60B
4.5/7.1
Per IAME KA100 Rules.
22mm Exhaust
     VLR 100 Jr2 12-15 Vortex ROK VLR 100cc Restricted VP110 Motul Kart GP 2T 320 Hoosier R60B
4.5/7.1
Per Vortex Rules.
Restricted Exhaust
TAG 100 Senior 16+ Air Cooled 100cc 2-Cycle
Air Box Required
VP110 Motul Kart GP 2T 360 Hoosier R60B
4.5/7.1
Per Engine Mfg Rules
     KA100 Sr 16+ IAME KA100 VP110 Motul Kart GP 2T 360 Hoosier R60B
4.5/7.1
Per IAME KA100 Rules.
     VLR 100cc 16+ Vortex ROK VLR 100cc VP110 Motul Kart GP 2T 360 Hoosier R60B
4.5/7.1
Per Vortex Rules.
Shifter –
Spec 125
15+ Honda or ROK Only VP110 Hoosier R60A
4.5/7.1
   Honda 15+ Honda 125cc – Air Box Required VP110 Motul Kart
GP 2T
385 Hoosier R60A
4.5/7.1
     ROK 15+ ROK 125cc – Air Box Required VP110 Motul Kart
GP 2T
410 Hoosier R60A
4.5/7.1
Shifter –
Open
12+ Any shifter not in Spec 125 class.    Ages and weights are expected to conform to some recognized class, but will not be enforced beyond safety considerations.  Air Box Req’d.  Examples Below. Non-
Tech
Non=
Tech
340 Hoosier R60A
4.5/7.1
   IAME SSE IAME SSE 175cc – Air Box Required Hoosier R60A
4.5/7.1
     KZ KZ 125cc – Air Box Required Hoosier R60A
4.5/7.1

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 – Other Attn  5
Cmp 8
Other 4 and 2 cycle alternatives VP110 N/A By
Engine
Hoosier R60B 4.5
LO206 Kid Kart Attn  5
Cmp 8
Briggs LO206 Junior with Carb Lock VP110 N/A 170 Hoosier R60B 4.5 Per Briggs Rules.  4100rpm Rev Limiter, 555728 0.285 Black slide, Gear: F19:R57, MaxTorque Clutch, 5507 RLV Pipe
Comer C-51 Attn  5
Cmp 8
Comer C-51
VP110 N/A 160 Hoosier R60B 4.5
IAME Kid Kart Attn  5
Cmp 8
IAME
VP110 N/A 160 Hoosier R60B 4.5
TAG CADET MICRO 7-10 Mixed engines; Air Box Required VP110 Hoosier R70 4.5
    SKUSA Micro Swift 7-10 IAME Mini Swift with Micro Header Motul Kart GP 2T 225 Hoosier R70 4.5
    Rotax Micro Max 7-10 Rotax Micro Hoosier R70 4.5
TAG CADET MINI 9-13 Mixed engines; Air Box Required Hoosier R70 4.5
    SKUSA Mini Swift 9-13 IAME Mini Swift Motol Kart GP 2T 245 Hoosier R70 4.5
    Vortex Mini ROK 8-12 Vortex Mini ROK 245 Hoosier R70 4.5
    Rotax Mini Max 9-12 Rotax Mini Rotax XPS Oil 235 Hoosier R70 4.5
TAG 125 Junior 12-15 Mixed engines; Air Box Required VP110 320 Hoosier R60A 4.5/7.1
    SKUSA X30 Junior 12-15 X30 + 29mm factory exhaust restr. Motul Kart GP 2T 320 Hoosier R60A 4.5/7.1
    Vortex ROK TT Jr. 12-15 320 Hoosier R60A 4.5/7.1
TAG 125 Senior 16+ Mixed Engines; Air Box Required VP110 Motul Kart
GP 2T
370 Hoosier R60A 4.5/7.1
World Formula Jr. II
Limited **
12-15 Briggs World Formula Jr. VP110 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 VP110 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 VP110 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.

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