2019 ADult Classes
ADULT LTD
•Riders in this class will be limited to this class only
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Rider should have none to very little racing experience
•Bikes used are limited to F1, F2 & Stock 100 eligible* (see rules for those classes)
•No F-3 classified bikes allowed
•Will have a two Final Race format. (Final Race 1 & Race 2 for additional track time)
•Results from Final Race #2 will dictate class awards for the event.
*Any questions on allowable bikes, Race Direction will consider each situation
F-1
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Unlimited modifications to engine, frame, suspension, wheel size, braking systems & exhaust
•Engine size restrictions must not exceed:
-Up to 65cc liquid cooled 2-stroke
-Up to 125cc 4-stroke (vertical or horizontal cylinder configuration)
-Up to 80cc air-cooled 2-stroke
•Riders must qualify within 117% of pole position. This is a safety rule to lessen the varying rates of speed on the track within class. (I.e., pole time is 26.5 seconds, then 31.0 seconds is the 117% cut-off)
•If a rider's time is outside of 117%, rider will be moved to the Adult LTD class
•Race Director has final decision, will notify rider & adjust class as needed
F-2
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Unlimited modifications to engine, frame, suspension, wheel size, braking systems & exhaust
•Engine size restrictions must not exceed:
-Up to 72cc liquid-cooled 2-stroke
-Up to 150cc air-cooled 4-stroke
-Up to 160cc air-cooled Ohvale GP-0 4-speed machine only
•Riders must qualify within 117% of pole position. This is a safety rule to lessen the varying rates of speed on the track within class. (I.e., pole time is 26.5 seconds, then 31.0 seconds is the 117% cut-off)
•If a rider’s time is outside of 117%, rider will be moved to the Adult LTD class
•Race Director has final decision, will notify rider & adjust class as needed
F-3
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Unlimited modifications to engine, frame, suspension, wheel size, braking systems & exhaust
•Engine size restrictions must not exceed:
-Up to 105cc 2-stroke
-Up to 150cc liquid-cooled 4-stroke
-Up to 190cc air-cooled 4-stroke
STOCK 100
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Bikes are limited to:
-Honda XR100/CRF100
-Honda CRF125FB
-Yamaha TTR125L or LE
-Suzuki DRZ125L
-Kawasaki KLX125L
-(No small wheel versions with 17” front and 14” rear wheels eligible)
•No engine, exhaust, intake, ignition, brakes or chassis modifications allowed
•OEM style/drop-in air filter & jetting changes allowed
•Exhaust baffle may not be modified or removed
•Spark arrestor screen is not required
•Hand & foot controls may be changed
•Seat foam & cover may be changed, OEM seat base must be used
•Honda XR/CRF100 may use a 16” front wheel from a Honda XR/CRF80 only. All other bikes must run a stock 19” front wheel
•OEM rear wheels must be used on all bikes
•No racing slicks or off-road tires allowed
•Must use OEM front forks, internal modifications allowed
•Stock OEM rear shock must be used, spring & internal modifications are allowed
•Front & rear sprockets may be changed
•Must keep OEM size chain
•Riders must qualify within 117% of pole position. This is a safety rule to lessen the varying rates of speed on the track within class. (I.e., pole time is 26.5 seconds, then 31.0 seconds is the 117% cut-off)
•If a rider’s time is outside of 117%, rider will be moved to the Adult Limited class
•Race Director has final decision, will notify rider & adjust class as needed
•Riders in this class will be limited to this class only
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Rider should have none to very little racing experience
•Bikes used are limited to F1, F2 & Stock 100 eligible* (see rules for those classes)
•No F-3 classified bikes allowed
•Will have a two Final Race format. (Final Race 1 & Race 2 for additional track time)
•Results from Final Race #2 will dictate class awards for the event.
*Any questions on allowable bikes, Race Direction will consider each situation
F-1
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Unlimited modifications to engine, frame, suspension, wheel size, braking systems & exhaust
•Engine size restrictions must not exceed:
-Up to 65cc liquid cooled 2-stroke
-Up to 125cc 4-stroke (vertical or horizontal cylinder configuration)
-Up to 80cc air-cooled 2-stroke
•Riders must qualify within 117% of pole position. This is a safety rule to lessen the varying rates of speed on the track within class. (I.e., pole time is 26.5 seconds, then 31.0 seconds is the 117% cut-off)
•If a rider's time is outside of 117%, rider will be moved to the Adult LTD class
•Race Director has final decision, will notify rider & adjust class as needed
F-2
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Unlimited modifications to engine, frame, suspension, wheel size, braking systems & exhaust
•Engine size restrictions must not exceed:
-Up to 72cc liquid-cooled 2-stroke
-Up to 150cc air-cooled 4-stroke
-Up to 160cc air-cooled Ohvale GP-0 4-speed machine only
•Riders must qualify within 117% of pole position. This is a safety rule to lessen the varying rates of speed on the track within class. (I.e., pole time is 26.5 seconds, then 31.0 seconds is the 117% cut-off)
•If a rider’s time is outside of 117%, rider will be moved to the Adult LTD class
•Race Director has final decision, will notify rider & adjust class as needed
F-3
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Unlimited modifications to engine, frame, suspension, wheel size, braking systems & exhaust
•Engine size restrictions must not exceed:
-Up to 105cc 2-stroke
-Up to 150cc liquid-cooled 4-stroke
-Up to 190cc air-cooled 4-stroke
STOCK 100
•Ages 17 & over; Ages 13 to 16 with endorsement from Race Direction
•Bikes are limited to:
-Honda XR100/CRF100
-Honda CRF125FB
-Yamaha TTR125L or LE
-Suzuki DRZ125L
-Kawasaki KLX125L
-(No small wheel versions with 17” front and 14” rear wheels eligible)
•No engine, exhaust, intake, ignition, brakes or chassis modifications allowed
•OEM style/drop-in air filter & jetting changes allowed
•Exhaust baffle may not be modified or removed
•Spark arrestor screen is not required
•Hand & foot controls may be changed
•Seat foam & cover may be changed, OEM seat base must be used
•Honda XR/CRF100 may use a 16” front wheel from a Honda XR/CRF80 only. All other bikes must run a stock 19” front wheel
•OEM rear wheels must be used on all bikes
•No racing slicks or off-road tires allowed
•Must use OEM front forks, internal modifications allowed
•Stock OEM rear shock must be used, spring & internal modifications are allowed
•Front & rear sprockets may be changed
•Must keep OEM size chain
•Riders must qualify within 117% of pole position. This is a safety rule to lessen the varying rates of speed on the track within class. (I.e., pole time is 26.5 seconds, then 31.0 seconds is the 117% cut-off)
•If a rider’s time is outside of 117%, rider will be moved to the Adult Limited class
•Race Director has final decision, will notify rider & adjust class as needed
2019 YOUTH CLASSES
Youth LTD
•Riders in this class will be limited to this class only
•Ages 5 to 17
•Rider should have none to very little racing experience
•Bikes used are limited to Youth 50, Youth 110 & Youth Open eligible* (see rules for those classes)
•Will have a two Final Race format. (Final Race 1 & Race 2 for additional track time)
•Results from Final Race #2 will dictate class awards for the event.
*Any questions on allowable bikes, Race Direction will consider each situation
Youth 50
•Ages 5 to 17
•Bikes are limited to:
-Honda XR50/CRF50
-Yamaha TTR50
•No engine, exhaust, intake, ignition, brakes or chassis modifications allowed
•OEM style/drop-in air filter & jetting changes allowed
•Exhaust baffle may not be modified or removed
•Spark arrestor screen is not required
•Must use OEM front forks, internal modifications allowed
•Must use OEM rear shock, spring & internal modifications allowed
•Aftermarket wheels are allowed but OEM wheel size (10” front & rear) & OEM rim width must be retained
•Controls, seat, sprocket & chain may be changed
Youth 110
•Ages 5 to 17
•Bikes are limited to:
-Honda CRF110
-Kawasaki KLX110
-Suzuki DRZ110
-Yamaha TTR110/TTR90
•No engine, exhaust, intake, ignition, brakes or chassis modifications allowed
•OEM style/drop-in air filter & jetting changes allowed
•Exhaust baffle may not be modified or removed
•Spark arrestor screen is not required
•Must use OEM front forks, internal modifications allowed
•Must use OEM rear shock, spring & internal modifications allowed
•Aftermarket wheels are allowed but:
-OEM rear wheel size of 12” must be retained
-Front wheels can be changed to 12” (14” is OEM size)
•Controls, seat, sprocket & chain may be changed
Youth Open
•Ages 5 to 17
•Bikes are limited to:
•up to 50cc 2-stroke
•up to 110cc 4-stroke (horizontal cylinder configuration)
-Suzuki DRZ110
-Kawasaki KLX110
-Yamaha TTR90
-Yamaha TTR110
-Honda CRF110
-Ohvale GP-0 110 4-speed semi-automatic & clutch model eligible
•up to 125cc 4-stroke (vertical & horizontal cylinder configuration)
-Honda XR100/CRF100
-Honda CRF125
-Honda Grom MSX125
-Yamaha TTR125 (all versions)
-Suzuki DRZ125 (all versions)
-Kawasaki KLX125 (all versions)
-Kawasaki Z125
•Riders in this class will be limited to this class only
•Ages 5 to 17
•Rider should have none to very little racing experience
•Bikes used are limited to Youth 50, Youth 110 & Youth Open eligible* (see rules for those classes)
•Will have a two Final Race format. (Final Race 1 & Race 2 for additional track time)
•Results from Final Race #2 will dictate class awards for the event.
*Any questions on allowable bikes, Race Direction will consider each situation
Youth 50
•Ages 5 to 17
•Bikes are limited to:
-Honda XR50/CRF50
-Yamaha TTR50
•No engine, exhaust, intake, ignition, brakes or chassis modifications allowed
•OEM style/drop-in air filter & jetting changes allowed
•Exhaust baffle may not be modified or removed
•Spark arrestor screen is not required
•Must use OEM front forks, internal modifications allowed
•Must use OEM rear shock, spring & internal modifications allowed
•Aftermarket wheels are allowed but OEM wheel size (10” front & rear) & OEM rim width must be retained
•Controls, seat, sprocket & chain may be changed
Youth 110
•Ages 5 to 17
•Bikes are limited to:
-Honda CRF110
-Kawasaki KLX110
-Suzuki DRZ110
-Yamaha TTR110/TTR90
•No engine, exhaust, intake, ignition, brakes or chassis modifications allowed
•OEM style/drop-in air filter & jetting changes allowed
•Exhaust baffle may not be modified or removed
•Spark arrestor screen is not required
•Must use OEM front forks, internal modifications allowed
•Must use OEM rear shock, spring & internal modifications allowed
•Aftermarket wheels are allowed but:
-OEM rear wheel size of 12” must be retained
-Front wheels can be changed to 12” (14” is OEM size)
•Controls, seat, sprocket & chain may be changed
Youth Open
•Ages 5 to 17
•Bikes are limited to:
•up to 50cc 2-stroke
•up to 110cc 4-stroke (horizontal cylinder configuration)
-Suzuki DRZ110
-Kawasaki KLX110
-Yamaha TTR90
-Yamaha TTR110
-Honda CRF110
-Ohvale GP-0 110 4-speed semi-automatic & clutch model eligible
•up to 125cc 4-stroke (vertical & horizontal cylinder configuration)
-Honda XR100/CRF100
-Honda CRF125
-Honda Grom MSX125
-Yamaha TTR125 (all versions)
-Suzuki DRZ125 (all versions)
-Kawasaki KLX125 (all versions)
-Kawasaki Z125