6.0
Competition Class Requirements
6.1
Kid Karts (Speedsters)
Current WKA rules apply in this
class except for those set forth in this document.
6.1.1 Age limitation is from
five to seven years of age.
6.1.2 Engine Comer C-50 Box
Stock, unaltered, 1.8 HP, Fixed jet carb, Jet size
#54 through #58.
6.1.3
“Speedsters” (Kid Kart drivers) who have
demonstrated racing experience over a race season or
more may participate in MKA events using the stock
carburetor as described in the WKA Tech Manual
minus the restrictor “pill”. New or novice Kid
Kart drivers must use carburetors as described in the
WKA Tech Manual that does contain the
restrictor “pill”. The back of their helmets should be
marked with a noticeable X, designating novice status
and they will start events at the rear of the grid. At
such time that these drivers demonstrate adequate
driving skill and request is made by parent or guardian,
removal of the restrictor “Pill” may occur by order of
the Race Director for MKA events.
This is a noncompetitive training
class. Although it is not a Championship Series Class
all participants will receive trophies and awards
throughout the season and at the banquet at the end of
the season.
6.2 FOUR CYCLE COMPETITION
CLASS REQUIREMENTS
Current WKA rules apply, unless specified here in
“Competition Class Requirement”. The Midwest Karting
Association Competition Rules and Regulations supersedes
WKA rules.
Five or six inch diameter wheels may be used in four cycle
classes and tires are open.
No
front braking systems are allowed.
Any dry clutch allowed in all classes except World
Formula which must use a Premier clutch – (no axle
clutches allowed).
15
Full body work or CIK type bodywork allowed.
All
bodywork must be neat in appearance. Bodywork that
appears loose will be a mechanical black flag. Mounting
must be secure and of good workmanship.
Muffler required. All 4‑Cycle Motors must use the RLV‑B91XL
(part no. 4104) Exhaust Silencer at all times.
All weight added to meet minimum kart/driver weight
requirements shall be bolted to the kart. Carrying of
the ballast on the driver's person is prohibited.
Ballast weight in all karts must be securely bolted to
the kart with a minimum of 5/16 inch Grade 5 or better
through‑bolt. All ballast securing bolts must be safety
wired, cotter keyed or double nutted. Weights shall be
painted white and marked with the kart number.
Oil catch tank mandatory. It must be secured to reduce
possibility of spillage. Securing it to the rear bumper
is not allowed.
Stock or WKA approved aftermarket billet rods are
allowed in all Animal classes.
6.2.1 Briggs
Rookie Blue Restricted Flathead Engine (2007 WKA rules apply)
Age 8 thru 12 years old
Engines/Fuel/Weight
Stock Briggs & Stratton 5HP (restricted) / Methanol Alcohol
only / 260 lbs
Miscellaneous
Stock Briggs & Stratton 5HP (restricted) engine requires a
.500 blue restrictor.
6.2.1.0 Briggs Rookie Blue Restricted Animal (2007 WKA
rules apply)
Age 8 thru 12 years old
Engines/Fuel/Weight
Stock Briggs & Stratton Animal restricted engine /methanol
alcohol only /260 lbs
Miscellaneous
Requires a .275 top hole and .325 bottom hole restrictor.
Age - 12 thru 15 years old
Engines/Fuel/Weight
Stock Briggs & Stratton flathead (restricted) / Methanol
Alcohol only / 300 lbs
Stock Briggs & Stratton Animal (restricted)/ Methanol Alcohol
only /315 lbs
Miscellaneous
Stock Briggs Flathead (restricted) engine requires a .575
gold restrictor
Stock Briggs Animal (restricted) engine requires a .505 gold
restrictor 16
6.2.3 Briggs
Sportsmen
Age – Must be 15 years or older
Engines/Fuel/Weight
Stock Briggs & Stratton 5HP / Methanol Alcohol only / 350 lbs
Miscellaneous
Stock Briggs & Stratton motor 5HP (non-restricted)
6.2.4 Briggs Senior Animal
Age - Must be 15 years or older
Engines/Fuel/Weight
Stock Briggs & Stratton Animal (Methanol Alcohol only) 360
lbs.
6.2.40 Briggs World Formula
Age must be 15 or older
Engines/Fuel/Weight
Briggs Stock World Formula Engine /Gasoline only/ 370 lbs
6.3 TWO CYCLE KARTS
Current WKA Two
Cycle rules apply to these classes except for rules
stated here.
Any brand
of oil may be used to mix with gasoline.
No spec
tires, but WKA tire sizes are required.
6.3.1 Yamaha Junior
Sportsman
Age: 8 thru 12
years old
Engines / Fuel / Weight
100cc Yamaha KT100S
Gasoline and Oil
250
lbs (Kart & Driver)
Miscellaneous
Carburetor
Walbro WA55B
Must use
RLV – SSX-V #7548 box stock muffler
New style
Y3 – Y4 cylinders only; Old style cylinders not
permitted
No axle
clutches
17
6.3.2 Yamaha Junior Super Can
SXX
Age: 12 thru 15
years old
Engines / Fuel / Weight
100cc Yamaha KT100S
Gasoline and Oil
305
lbs. (Kart & Driver)
Miscellaneous
Must use RLV – SSX-V #7548 box stock muffler
New
style Y3 – Y4 cylinders only; Old style cylinders not
permitted
No axle clutches
6.3.3 Yamaha Medium Can
Age: 15+ years old
Engines / Fuel / Weight
100cc Yamaha KT100S
Gasoline and Oil
340 lbs (Kart & Driver)
Miscellaneous
Must use RLV – SSX-V
#7548 box stock muffler
New style Y3 – Y4
cylinders only; Old style cylinders not permitted
No axle clutches
6.3.30 HPV Junior
Age: 12 to 15 years
Engines / Fuel / Weight
HPV100
Gasoline and Oil
315 lbs (Kart and
Driver)
Miscellaneous
WB3A carburetor
required
6.3.31 Senior HPV
Age: 15+ years old
Engine / Fuel / Weight
HPV 100
Gasoline and Oil
345 lbs
Miscellaneous
(WB3A Carburetor required) (HPV3 pipe required)
