2008 Class Structure

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Laydown ENDURO Class Structure

CONTROLLED LIMITED 1 & 2 (Class 10 & 51) Age 16 years & up – a) Piston Port – 310 lbs. b) Controlled (prior to 2000) – 340 c) Controlled 2000 (ICA) –Stock Appearing - 390 lbs.  e) Euro 5 &135cc Controlled – 370 lbs. – Piston Port is open fuel all others gas and oil only – Open Engines – 410 lbs. – Open fuel  

100cc CONTROLLED SPEC 1 & 2 (Class 15 & 49) Age 16 years & up –Engines: Yamaha & Piston Port – 360 lbs –, 100cc Controlled &ICA Reed engines 410 lbs. Exhaust 100cc Controlled Spec IR1 only, Yamaha & Piston Port any approved fixed pipe and 1.75” header. Gas & Oil only

JR. ENDURO 1 & 2 (Class 8 & 48) Age 12 thru 15 years– Gas and oil only – a) SSX muffler – 340 lbs. b) SBX muffler – 360 lbs. - Yamaha KT100S engines per 2008 IRA Tech Manual. Old style Yamaha heads and cylinders allowed. Chest protector is mandatory. EXHAUST: RLV SSX-V #7548, #7548A, #7540, #7502 for lite weight and heavy weight may use SBX muffler with, .875 Restrictor and RLV 26S header with 11" to 12" piston to end of flex (RLV exhaust restrictor added to end of flex is not part of 11-12" length). When a SSX Muffler # 7540 is used, must be run with 4 holes up and part # 7502 must be run 4 holes down, If hole exists in pipe for EGT sensor, EGT sensor probe must be in place. Gas and oil only.
MIN. WEIGHT: 340 lbs.(SSX) 360 lbs.(SBX). MAX. KART WEIGHT: 200 lbs. at race end when using SBX.

PISTON PORT CAN ENDURO 1 & 2 (Class 9 & 47) Age 15 years & up – SSX muffler – 410 lbs – Gas and oil only - Yamaha KT100S, ARC Comer and PRD RK 100 engines.  Old style Yamaha heads and cylinders allowed. 

UNLIMITED 1 & 2 (Class 12 & 50) Age 18 years & up – a) B-Limited – 380 lbs. – Open fuel b) 125 Gearbox - 420 lbs. – Gas &oil only c) B-Stock – 450 lbs. – Gas & oil only d) Twin 125 – 490 lbs. – Gas & oil only e) Twin 135 Controlled – Gas & oil only – 460 lbs. f) 250cc Gearbox Single – 460 lbs. – Gas & oil only g) IC/4 (4 cycle) Gearbox – 460 lbs. – Gas only / MUST HAVE ROAD RACING LICENSE OR PROOF OF EQUIVALENT EXPERIENCE.  USSC 250 Gearbox engines and karts allowed.  IC/4 Gearbox engine rules per 2006 WSK Manual.  Formula 125 – 125 Gearbox (Laydown) – 420 lbs. – Gas & oil only – Open – 375 lbs. – Open fuel – Rotax Max (Laydown) – 385 lbs. – Gas & oil only

YAMAHA HEAVY 1 & 2 (Class 11 & 60) Age 16 years & up – 410 lbs. - Gas and oil only - Yamaha KT100S engines.  No adjustable pipes allowed.  Old style Yamaha heads and cylinders allowed.

Sprint ENDURO Class Structure

SPRINT 4 CYCLE Novice (ANIMAL & FLAT HEAD) 1 & 2 (Class 1 & 30) Age 8 thru 11 years – Animal 250 lbs – triple hole red restrictor. Flat Head 250 lbs – 5 hp Briggs & Stratton engines per 2007 IRA Tech Manual. Exhaust silencers required. 0.500 (turquoise) restrictor plate required.  NO steering fairings, the CIK number panel is legal, overall nose height maximum of 16" measured from ground, chest protector is mandatory.

SPRINT YAMAHA NOVICE 1 & 2 (Class 2 & 31) Age 8 thru 11 years – 275 lbs. – Yamaha KT100S engine per 2008 IRA Tech Manual. Walbro WA55B carburetor mandatory. RLV YBX Can muffler Old style Yamaha heads and cylinders allowed. NO steering fairings, the CIK number panel is legal, overall nose height maximum of 17" measured from ground, chest protector is mandatory.

TAG™ CADET 1 & 2 (class 3 & 32) Age 8 thru 11 years – Weight per TAG™ USA weight chart. – Gas & oil only – TAG™ engines, exhaust, and karts per 2008 TAG™ USA Tech Manual, chest protector is mandatory.

SPRINT JUNIOR 4-CYCLE (ANIMAL & FLAT HEAD) 1 & 2 (Class 23 & 54) Age 12 thru 15 years – 305 lbs. Briggs & Stratton 5hp with .575 restrictor or Briggs & Stratton Stock Animal 6.5hp w/.360 WKA throttle stop maximum exhaust pipe length 24” may be one or two piece must be inside bumper. Alcohol only allowed. Exhaust silencers required.  Aftermarket connecting rods are allowed, stock length only, chest protector is mandatory for JR participants

BRIGGS SPRINT ANIMAL 360 1 & 2 (Class 24 & 55) Age 15 years & up - 360 lbs. - Alcohol only - Briggs & Stratton engines. Exhaust silencers required. Aftermarket connecting rods are allowed.

BRIGGS SPRINT ANIMAL 335 (Class 6) Age 15 years & up - 335 lbs. - Alcohol only - Briggs & Stratton engines.  Exhaust silencers required. Aftermarket connecting rods are allowed.

SPRINT JR. YBX CAN 1 & 2 (Class 5 & 34) Age 12 thru 15 years - 305 lbs. - Gas and oil only - Yamaha KT100S engines.  RLV YBX #7500 muffler. Chest protector is mandatory

SPRINT CIK YAMAHA SSX CAN 1 & 2  (Class 22 & 52) Age 15 years & up - 340 lbs.  Gas and oil only - 5” wheels only – 450 front only – 710 rear only Yamaha KT100S engines per 2008 IRA Tech Manual.  RLV SSX Can muffler.  Old style Yamaha heads and cylinders allowed. CIK Sit-up sprint style seat only, 14” minimum height cannot pass rear axle. CIK style Bodywork Only.  Engine clutch only. Minimum overall rear tire width of 45 inches.

HPV JUNIOR 1 & 2 (Class 14 & 42) age 12 thru 15 – 310 lbs. #2 pipe – gas and oil – K&N filter allowed – open tire – 5” wheels only – 450 front only – 600 rear only – IRA engine rules apply. CIK sit-up sprint style seat only.  14” minimum height cannot pass rear axle.  Engine clutch only.  Minimum overall rear tire width of 45”.

HPV Senior 1 & 2 (Class 17 & 46) age 15 & up – 340 lbs. with #3 pipe at 12"-12.5" – 360 lbs. with  #4 pipe at  10"-10.5" – gas and oil – K&N filter allowed – open tire – 5” wheels only – 450 front only – 710 rear only – IRA engine rules apply. CIK sit-up sprint style seat only.  14” minimum height cannot pass rear axle.  Engine clutch only.  Minimum overall rear tire width of 45”.

PISTON PORT CAN SPRINT 360 1 & 2  (Class 4 &33) Age 15 years & up - 360 lbs. - Gas and oil only - Yamaha KT100S, ARC Comer and PRD RK 100 engines. RLV SSX Can muffler. Old style Yamaha heads and cylinders allowed. 

PISTON PORT CAN SPRINT 380 (Class 44) Age 15 years & up - 380 lbs. - Gas and oil only - Yamaha KT100S, ARC Comer and PRD RK 100 engines. RLV SSX Can muffler.  Old style Yamaha heads and cylinders allowed. 

OVER 35 SPRINT CAN 1 & 2  (Class 21 & 35 ) Age 35 years & up - 380 lbs. - Gas and oil only - Yamaha KT100S, ARC Comer and PRD RK 100 engines. RLV SSX Can muffler.  Old style Yamaha heads and cylinders allowed. 

TAG™ IAME Challenge / TAG™ USA (Class 53) Age 15 & up – 360 lbs. Weight per TAG™ USA weight chart. – Gas & oil only – TAG™ engine, exhaust, Tire compound and karts per 2008 TAG™ USA Tech Manual.  Rules may change throughout the year, following technical updates. CIK Sit-up sprint style seat only, 14” minimum height cannot pass rear axle. Engine clutch only. Minimum overall rear tire width of 45”.
(Requires TAG™ Racing International License) 

TAG™ SENIOR / TAG™ USA 1 & 2 (Class 25 & 38) Age 15 & up – Weight per TAG™ USA weight chart. – Gas & oil only – TAG™ engines, exhaust, Tire compound and karts per 2008 TAG™ USA Tech Manual.  Rules may change throughout the year, following technical updates. CIK Sit-up sprint style seat only, 14” minimum height cannot pass rear axle. Engine clutch only. Minimum overall rear tire width of 45”.

TAG™ HEAVY / TAG™ USA 1 & 2 (Class 26 & 39) Age 15 & up – Weight per TAG™ USA weight chart. –
Minimum driver weight after race including driving equipment 200 lbs – Gas & oil only – TAG™ engines, exhaust, Tire compound and karts per 2008 TAG™ USA Tech Manual.  Rules may change throughout the year, following technical updates. CIK Sit-up sprint style seat only, 14” minimum height cannot pass rear axle. Engine clutch only.  Minimum overall rear tire width of 45”. 200 lb weight rule waived for drivers 35 yrs and older.

TAG™ 4-STROKE / TAG™ USA 1 & 2 (Class 27 & 40) Age 15 and up – Weight per TAG™ USA weight chart – Gas and oil only – TAG™ engines, exhaust Tire compound and karts per 2008 TAG™ USA Tech Manual.  Rules may change throughout the year following technical updates. CIK sit-up sprint style seat only.  14” minimum height cannot pass rear axle.  Engine clutch only.  Minimum overall rear tire width of 45”.

TAG™ SHIFTER / TAG™ USA 1 & 2 (Class 28 & 41) Age 15 and up – Weight per TAG™ USA weight chart – Gas and oil only – TAG™ engines, exhaust Tire compound and karts per 2008 TAG™ USA Tech Manual.  Rules may change throughout the year following technical updates.  CIK sit-up sprint style seat only.  14” minimum height cannot pass rear axle.  Engine clutch only.  Minimum overall rear tire width of 45”.

TAG™ JR. SPRINT / TAG™ USA 1 & 2 (Class 7 & 56) Age 12 to 15 years – 320lbs. – Gas & oil only –Will be a restricted 125cc.  Restrictions will be done by the exhaust header per 2008 TAG™ USA Tech Manual. TAG™ engines, exhaust Tire compound and karts per 2008 TAG™ USA Tech Manual.  Rules may change throughout the year, following technical updates.  CIK sit-up style seat only, 14” minimum height cannot pass rear axle.  Engine clutch only Minimum overall rear tire width of 45”. Chest protector is mandatory.

CIK 125 SPRINT 1 & 2 (Class 18 & 57) Age 16 years & up - 385 lbs. - Gas & oil only - Approved engines:  125cc moto & 125cc ICC CIK/FIA engines (ICC engines stock 30mm Delorto carb only).  CIK style Bodywork Only.  Chassis & engine tech per IRA rules.  Tires open CIK Sit-up sprint style seat only, 14” minimum height cannot pass rear axle

G-125 SPRINT 1 & 2 (Class 19 & 58) Age 35 years & up –410 lbs. – Gas & Oil only  - Approved engines: 125cc moto & 125cc ICC CIK/FIA engines (ICC engines stock 30mm Dellorto carb only). CIK style Bodywork Only.  Chassis & engine tech per IRA rules. Tires open. CIK Sit-up sprint style seat only, 14” minimum height cannot pass rear axle.

SPRINT OPEN / JR & SR. 80cc GEARBOX 1 & 2 (Class 16 & 45) Age 16 years & up) a) Piston Port – 320 lbs – Open fuel b) Controlled – 345 lbs. – Open fuel c) 125cc & up – 365 lbs – Open fuel d) 80cc Gearbox – 370 lbs (380 lbs at Gateway) – Gas & oil e) 4 cycle 350 lbs - Open Fuel, Spec Shifter – 385 lbs – Gas  - Any single cylinder 2 cycle engines, air or water cooled.  No gearbox, except 80cc gearbox.  No adjustable pipes.  WKA sprint bodywork allowed.  Headrest and supplemental fuel tank allowed for 2 cycle open karts.  80cc engines per 2006 SKUSA.  Exciter spec shifter must be factory spec. Jr. 80cc age 12 to 15 year – 330 lbs. – gas & oil only – approved engines: 80cc moto only.  CIK style bodywork only.  Chassis and engine tech per IRA rules.  Carburetor venturi diameter 28.5mm maximum.  Ignition timing non-tech but may not be adjustable in motion.  Tires open.  Chest protector is mandatory for Jr drivers.

SPEC MOTO 125 SPRINT 1 & 2 (Class 20 & 59) Age 16 years & up - 385 lbs. Gas & oil only - Approved engines:  Honda 125cc moto. CIK style Bodywork Only.  Chassis & engine tech per IRA rules.  Tires open CIK Sit-up sprint style seat only, 14" minimum height cannot pass rear axle.  Cylinder and cylinder head must be stock 1999 OEM. Pipe is restricted to the following RLV 6800 series, RCE T3, and RLV-R4.

            TAG™ USA - SENIOR PRO SERIES           

Entry fee: $125.00 per class ($75.00 per entry payback at track and $25.00 per entry paid into the year-end fund).  You do not need to be a member to compete in each race event.   Distribution of payout as follows:  1st-30% 2nd-25% 3rd-20% 4th-15% 5th-10%.  Qualifying for start position.  Lemans start

TAG™ USA Senior Pro Age 15 & up – Weight per TAG™ USA weight chart. – Gas & oil only – TAG™ engines, exhaust, Tire compound and karts per 2008 TAG™ USA Tech Manual.  Rules may change throughout the year, following technical updates. CIK Sit-up sprint style seat only, 14” minimum height cannot pass rear axle. Engine clutch only.  Minimum overall rear tire width of 45”.

All events will count toward year-end awards.  You must run a minimum of 3 events to qualify for year-end awards.  You must be an International Racing Association member to qualify for year-end awards.  You do not need to be a member to run an individual event