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2019 CLASS STRUCTURE

214.1 KID KARTS

DRIVER REQ: Attained age of 5 through 7

ENGINE: COMER C51 only (See Section 621)

FUEL: Spec Fuel 87 Octane Fuel will be Purchased from WKA 

MINIMUM WEIGHT: 150 lbs.

TIRES: Bridgestone YLC – 10 X 4.50 – 33 1/4 max circumference

GEAR RATIO 10/89

OTHER: (1) See Section 900 for chassis and bodywork specifications 

214.2 MICRO SWIFT

DRIVER REQ: Age 7 through 10

ENGINE: Parilla Swift with restricted exhaust header as supplied by manufacturer. (with restricted header) See 625.13

CARBURETOR: Tillotson HW-31A

FUEL: Spec Fuel

KART:  Cadet or standard kart chassis allowed.

MINIMUM WEIGHT: 225 lbs.

SPEC TIRE: Bridgestone YLC – 10 x 4.50 – 5 front and rear

OTHER: Class runs on same tires both days; new set required at qualifying round on day one.  National point champion must move out of class for following years competition.

 

214.3.1 BRIGGS CADET 206

DRIVER REQ: Age 7 through 12

ENGINE: Briggs LO206 Engine Sealed

EXHHAUST: RLV #5506 or #5507

CARBURETOR: As Supplied by Manufacturer

CARBURETOR ADDITIONAL: Must have Locking Cap #555726

SLIDE: Briggs Green .490 Part Number #555740

FUEL: Spec Fuel 87 Octane WKA will Specify the Location

KART: CADET or standard kart chassis allowed

MINIMUM WEIGHTS: 265 lbs.

SPEC TIRE: Bridgestone YLC – 10 X 4.50 – 5 Front and rear

OTHER: (1) No axle clutches. (2) Class runs on same tires both days;

New set required at qualifying round

 

214.4 MINI SWIFT SPORTSMAN

DRIVER REQ: Age 8 through 12

ENGINE: Parilla Swift

EXHAUST: Must be stock pipe and exhaust header as supplied by manufacturer

CARBURETOR: Tillotson HW-31A

FUEL: Spec Fuel

KART: Cadet or standard chassis allowed

MINIMUM WEIGHTS: 245 lbs.

SPEC TIRES: Bridgestone YLC – 10 x 4.50 -5 Front and rear

OTHER: (1) No axle clutches. (2) Class runs on same tires both days;

New set required at qualifying round

 

214.5.1 KA100 JUNIOR

DRIVER REQ: Attained Age 11 through 15

ENGINE: KA100

FUEL: Spec fuel

MINIMUM WEIGHTS: 320 lbs.

EXHAUST: Must be spec exhaust system as supplied by manufacturer with 22mm Restrictor

CARBURETOR: as factory supplied, see 626.4

SPEC TIRE: Bridgestone YLC – 10 X 4.50 -5 front, 11 x 7.10-5 rear

One new set of tires required for qualifying each day

OTHER: In the event that the engine cannot be started on the grid

With the onboard starter, an auxiliary starter may be used.

 

214.6 IAME JUNIOR

DRIVER REQ: Age 12 through 15

ENGINES: IAME X30

MINIMUM WEIGHTS: 320 lbs.

FUEL: Spec fuel

EXHAUST PIPE/SILENCER: Must be stock pipe and restricted exhaust

Header as supplied by manufacturer for each specific engine. X30

Requires 26mm header.

X30 = 16 ¾” – as measured from the back side of the header flange

Around the right side of the header, connector and pipe to the first

Weld at the end of the divergent cone. Pipe to be measured on the kart

As raced. See Figure 609.9

SPEC TIRE: Bridgestone YNB – 10 X 4.50 -5 front, 11 x 7.10-5 rear

AIRBOX: Required, see section 551

OTHER: In the event that the engine cannot be started on the grid

With the onboard starter, an auxiliary starter may be used. In any case,

The onboard starter is subject to post race tech inspection to ensure

That all components are present and correctly installed.  (2) One

new set of tires required each day for qualifying. 

214.8 IAME SENIOR

DRIVER REQ: Age 15 and older

ENGINES: IAME X30

MINIMUM WEIGHTS: 360 lbs.

FUEL: Spec fuel

EXHAUST PIPE/SILENCER: Must be stock pipe and restricted exhaust

Header as supplied by manufacturer.  The minimum combined length

X30 = 16 ¾” – as measured from the back side of the header flange

Around the right side of the header, connector and pipe to the first

Weld at the end of the divergent cone. Pipe to be measured on the kart

As raced. See Figure 609.1

CARBURETOR: As factory supplied. See figure 610

SPEC TIRE: Bridgestone YNB – 10 X 4.50 -5 front, 11 x 7.10-5 rear

AIRBOX: Required, see section 551

OTHER: In the event that the engine cannot be started on the grid

With the onboard starter, an auxiliary starter may be used. In any case,

The onboard starter is subject to post race tech inspection to ensure

That all components are present and correctly installed.  (2) One

new set of tires required each day for qualifying.

 

214.9 KA100 SENIOR

DRIVER REQUIREMENT: Age 15 and older

ENGINE: IAME KA100

MINIMUM WEIGHT: 360 lbs.

FUEL: Spec Fuel

EXHAUST: Must be spec exhaust system as supplied by manufacturer

CARBURETOR: as factory supplied, see 626.4

SPEC TIRE: Bridgestone YLC – 10 X 4.50 -5 front, 11 x 7.10-5 rear

One new set of tires required for qualifying each day

OTHER: In the event that the engine cannot be started on the grid

With the onboard starter, an auxiliary starter may be used.