New Castle Motorsports Park / New Castle Raceway / Kart Racing Track, East of Indianapolis, IN

KRA Series Class List -

*Spec tires will be mandatory for all classes whether the driver is running for points or not.

Class Name (In No Particular Order)	Weight	Tires	Notes
125cc Shifter	ICC/Modified Moto 420 lbs Stock Moto 395 lbs Both engines will compete head to head with a weight break for the Stock Moto engines	MG Red or Yellow 460/710x5	Air Boxes Mandatory 15 and up ICC - SKUSA Engine Rules Stock Moto - SKUSA Engine Rules for S3 Class RS Intake Boot Legal Modified Bottom Ends Can Be Ran with Stock Cylinder, Head, Piston and Ignition Box
Yamaha Junior Sportsman	240 lbs	MG Red 460x5	Air Boxes Mandatory 8-12 years old All Drivers Must Use an SFI Approved Ribvest
Mini Swift	245 lbs	MG Red 460x5	Air Boxes Mandatory 8-12 years old All Drivers Must Use an SFI Approved Ribvest SKUSA Engine Rules
Micro Swift	225 lbs	MG Red 460x5	Air Boxes Mandatory 7-10 years old All Drivers Must Use an SFI Approved Ribvest 16mm Restricted Exhaust Header SKUSA Engine Rules
Rookie Yamaha Yamaha Rookie will run with the Novice classes. Rookie Yamaha will run for points and requires a 3 Hole YBX exhaust.	230 lbs.	MG Red 460x5	Yamaha KT100 WA55 Carb 3 Hole YBX Can 7-12 Years Old SFI Approved Ribvest Mandatory
Yamaha Junior Can (Class #1 and #2, Runs Twice)	305 lbs	MG Red 460x5 front 710x5 rear	Air Boxes Mandatory 12-15 years old
Briggs LO206 CIK Senior	365 lbs	MG Red 460x5 Front, 710x5 Rear *See rules below for max wheel width	15 and up Factory Briggs Rules for the LO206 engine CIK Bodywork and Sprint Style Seats Legal Only NCMP 93 octane track race gas only, must pass tech *Scroll down to bottom of page for complete rules*
Briggs LO206 CIK Light	330 lbs	MG Red 460x5 Front, 710x5 Rear *See rules below for max wheel width	15 and up Factory Briggs Rules for the LO206 engine CIK Bodywork and Sprint Style Seats Legal Only NCMP 93 octane track race gas only, must pass tech *Scroll down to bottom of page for complete rules*
Briggs LO206 CIK Sportsman	370 lbs	MG Red 460x5 Front, 710x5 Rear *See rules below for max wheel width	15 and up Eligibility - No KRA Race Wins - Final Eligibility Race Directors Decision Factory Briggs Rules for the LO206 engine NCMP 93 octane track race gas only, must pass tech CIK Bodywork and Sprint Style Seats Legal Only *Scroll down to bottom of page for complete rules*
Briggs LO206 CIK Masters	370 lbs	MG Red 460x5 Front, 710x5 Rear *See rules below for max wheel width	40 years old and up Factory Briggs Rules for the LO206 engine NCMP 93 octane track race gas only, must pass tech CIK Bodywork and Sprint Style Seats Legal Only *Scroll down to bottom of page for complete rules*
Briggs LO206 Junior CIK This class will run on track with the Yamaha Novice and Rookie Classes	310 lbs	MG Red 460x5 Front, 710x5 Rear *See rules below for max wheel width	12 to 15 years old Factory Briggs Rules for the LO206 engine Gold Carb Slide CIK Bodywork and Sprint Style Seats Legal Only NCMP 93 octane track race gas only, must pass tech *Scroll down to bottom of page for complete rules*
Briggs LO206 Cadet CIK This class will run on track with the Yamaha Novice and Rookie Classes	250 lbs	MG Red 460x5	8 to 12 years old Factory Briggs Rules for the LO206 engine Green Carb Slide CIK Bodywork and Sprint Style Seats Legal Only NCMP track race gas only, must pass tech *Scroll down to bottom of page for complete rules*
Yamaha Can Senior	340 lbs	MG Red 460x5 Front, 710x5 Rear	Air Boxes Mandatory 15 and up
Yamaha Can Masters	360 lbs	MG Red 460x5 Front, 710x5 Rear	Air Boxes Mandatory 30 years and up
TaG Senior	All Weights LISTED BELOW! SENIOR	MG Red or Yellow 460x5 Front, 710x5 Rear	Air Boxes Mandatory 15 and up WKA Engine Rules X30 SKUSA Rules
TaG Heavy	All Weights LISTED BELOW! HEAVY	MG Red or Yellow 460x5 Front, 710x5 Rear	Air Boxes Mandatory 15 and up WKA Engine Rules X30 SKUSA Rules
TaG Junior	325 lbs.	MG Red 460x5 Front, 710x5 Rear	Air Boxes Mandatory 12-15 years old WKA Engine Rules X30 SKUSA Rules Leopard 25mm Header X30 26mm Header
KA100 Junior	320 lbs.	MG Red 460x5 Front, 710x5 Rear	Air Boxes Mandatory 12-15 years old KA100 SKUSA Engine Rules
KA100 Senior	360 lbs.	MG Red 460x5 Front, 710x5 Rear	Air Boxes Mandatory 15 and Up KA100 SKUSA Engine Rules
Unlimited (Will Run with Shifter)	Weights and Rules Listed Below	MG Red or Yellow 460x5 Front, 710x5 Rear	Air Boxes Mandatory 15 and Up
Kid Karts	150 lbs	460x5 MG Red Tires Only Max Rear Tire Circumference 33"	Rules Here Class will Qualify and Race 5-7 years old All Drivers Must Use an SFI Approved Ribvest The Honda GXH50 will be allowed to run in the class as well.

*Parilla Leopard and Yamaha KT100 Tech Rules are here

KRA LO206 Class -

LO206 Engine Claiming Rule - At the race director’s discretion, the track may ‘claim’ a competitor’s Briggs LO206 engine at any time. The track will supply the competitor with a new, factory sealed engine in direct exchange for the competitors ‘as raced’ engine. If the competitor fails to comply with the claim request, the competitor will be excluded from participating for one year and will forfeit all points acquired to date. The same will apply if a claimed engine is found to be blatantly illegal.

LO206 Engine Rules - Must run RLV 5507 Exhaust Header with 4104 Silencer. All engines must run Factory Briggs rules only. No disc clutches, shoe type only.

NCMP track 93 octane LO206 race gas only, must pass tech

Shoe Type Clutch Only, No Disc Clutches

KRA Briggs LO206 Senior CIK and Masters Class Rules -

Seat - Must use sprint style kart seat

Bodywork - Must use any CIK approved European style bodywork. Rear CIK plastic bumper is optional.

Front Wheel Width - 5 1/2" x 5" Max Overall Width, Outside to Outside
Rear Wheel Width - 8 3/8" x 5" Max Overall Width, Outside to Outside

KRA TaG Class Weight Structure -

TaG Senior Class -

PRD, Easy Kart - 355 lbs.
Leopard, Rotax, X30 - 365 lbs.
All Other Engines - 375 lbs.

TaG Heavy Class -

PRD, Easy Kart Leopard - 395 lbs.
X30 - 405 lbs.
All Other Engines - 415 lbs.

Add 20 lbs to the minimum weight if you are running front brakes in any single speed class (does not include shifter class, no additional weight needed)

The Motori 7 engine is NOT allowed in any KRA TaG Class.

X30 Engine Rules -

X30 will run under SKUSA Engine Rules with the following exceptions - Sprocket and Clutch Drum can be aftermarket but must still measure the same as OEM. Spark plugs allowed are NGK R6252K-105 and BR10EG.

Unlimited Class Weight Structure -

Any Bridgestone Tire, No minimum weight. Any single speed purpose built kart engine gas or alcohol (The two speed Rotax DD2 is allowed) is permitted. Carburetor or fuel injection is allowed. Any motor that is deemed possible to produce 40hp or more will be required to use front and rear brakes.

Twin or single engine formulas are permitted. In this day of spec classes in all forms of motorsports this class offers innovation and creativity to the racers. This class is truly UNLIMITED, have fun!

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