
2025 CLASSES
12 INCH PRO
● Pro riders only. A rider skill. Must be 12+ years of age
● Air cooled horizontal 4 stroke with max 14" front and 12" rear. Disc brakes are allowed
● 212CC limit
● Auto clutch and manual clutch are allowed (aftermarket hydraulic, cable, KLX110L, etc)
● Electric conversions are allowed ONLY using similar model frames and meet class requirements (14”/12” wheels, Similar wheelbase, etc). Subject to inspection before allowed to race
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket MX style swingarm, aftermarket shocks, inverted forks are allowed.
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
OPEN MAD DOG PRO
● Pro riders only. A rider skill. Must be 12+ years of age
● Air cooled vertical 4 stroke with max 19" front and 16" rear. Disc brakes are allowed
● 220CC limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
● No Surron/Talaria/Eride or similar ebike allowed
12 INCH NOVICE
●Non-Pro rider only. C Level rider skill. Must be 12+ years of age ●Air cooled horizontal 4 stroke with max 14" front and 12" rear. Disc brakes are allowed ●155CC limit ●Auto clutch and manual clutch are allowed (aftermarket hydraulic, cable, KLX110L, etc) ●Aftermarket MX style swingarm, aftermarket shocks, inverted forks are allowed ●ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc) ●Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed ●No additional aftermarket parts or modifications to the bike unless specifically approved in this rule section. Subject to change during the season
● Non-Pro rider only. C Level rider skill. Must be 12+ years of age
● Air cooled horizontal 4 stroke with max 14" front and 12" rear. Disc brakes are allowed
●155CC limit●Auto clutch and manual clutch are allowed (aftermarket hydraulic, cable, KLX110L, etc)
● Aftermarket MX style swingarm, aftermarket shocks, inverted forks are allowed
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● No additional aftermarket parts or modifications to the bike unless specifically approved in this rule section. Subject to change during the season
12 INCH AMATEUR
● Non-Pro riders only. B rider skill. Must be 12+ years of age
● Air cooled horizontal 4 stroke with max 14" front and 12" rear. Disc brakes are allowed
● 155CC limit
●Auto clutch and manual clutch are allowed (aftermarket hydraulic, cable, KLX110L, etc)
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket MX style swingarm, aftermarket shocks, inverted forks are allowed.
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
12 INCH OPEN B/C
● Non-Pro riders only. B/C Combined rider skill. Must be 12+ years of age
● Air cooled horizontal 4 stroke with max 14" front and 12" rear. Disc brakes are allowed
● 155CC limit
● Auto clutch and manual clutch are allowed (aftermarket hydraulic, cable, KLX110L, etc)
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket MX style swingarm, aftermarket shocks, inverted forks are allowed.
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
OPEN MADDOG NON PRO B/C
● Non Pro Riders – B/C Skill level. Must be 12+ years of age.
● Air cooled vertical 4 stroke with max 19" front and 16" rear. Disc brakes are allowed
● 220CC limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
● NO Surron/Talaria/Eride or similar ebike allowed. Full size ebikes like Alta,Stark,etc are NOT allowed
12 INCH STOCK 110
● Air cooled horizontal 4 stroke with max 14" front and 12" rear drum wheels. No disc brakes allowed
● 110CC limit (MUST RETAIN STOCK BORE/STROKE FROM MANUFACTURE).
● Auto clutch ONLY. No KLX110L or aftermarket/OEM clutch kits.
● Comfort/Adult friendly mods ONLY (bars, triple clamps, fork internals, shock, tires, pegbar, pegs, shifter, levers, chain, tires, sprockets, cosmetic upgrades, etc)
● Must retain stock frame, stock swingarm, stock forks, stock style drum wheels, stock exhaust (no baffle, baffle mods, or performance tip), stock airbox, etc
● ECU tunes are allowed (jetting changes are allowed on carb models) but must be stock ECU (NO ARACER PRODUCTS OR STANDALONE ECUS).
● ZERO internal performance modifications are allowed (cam, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Reliability motor mods are allowed (manual cam chain tensioners, chain guides, oil pump gears, HD clutches but must retain unmodified centrifugal auto clutch assembly with stock engine internals)
● No additional aftermarket parts or modifications to the bike unless specifically approved in this rule section. Subject to change during the season
●Must be 12+ years of age.
12 INCH STOCK LIMITED
● Air cooled horizontal 4 stroke with max 14" front and 12" rear. Disc brakes are allowed
● 110CC limit (MUST RETAIN STOCK BORE/STROKE FROM MANUFACTURE).
● Auto clutch and manual clutch are allowed (aftermarket hydraulic, cable, KLX110L, etc)
● Aftermarket A style swingarm, aftermarket shocks, conventional style forks ONLY. NO inverted forks or MX style swingarm. Must retain stock frame
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● No additional aftermarket parts or modifications to the bike unless specifically approved in this rule section. Subject to change during the season
●Must be 12+ years of age.
12 INCH STOCK MOD
● Air cooled horizontal 4 stroke with max 14" front and 12" rear. Disc brakes are allowed
● 155CC limit
● Auto clutch and manual clutch are allowed (aftermarket hydraulic, cable, KLX110L, etc)
● Aftermarket A style swingarm, aftermarket shocks, conventional style forks ONLY. No inverted forks or MX style swingarms. Must retain stock frame
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● No additional aftermarket parts or modifications to the bike unless specifically approved in this rule section. Subject to change during the season
●Must be 12+ years of age.
10 INCH OPEN
● Air cooled horizontal 4 stroke with max 12" front and 10" rear. Disc brakes are allowed
● 212CC limit
● Auto clutch or manual clutch are allowed
● Full MX style swingarms, aftermarket frames, inverted forks, exhausts, intake kits, ECU, CDIs, are all allowed
● ALL internal motor performance modifications are allowed (heads, cranks, cams, porting, boring, high comp pistons, throttle bodies, manifolds, lightened flywheels, lightened oil spinners, etc)
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
●Must be 12+ years of age.
CHRIS FARLEY CLASS
● Minimum 24+ years old and must weigh over 220+lbs
● Air cooled vertical 4 stroke with max 19" front and 16" rear. Disc brakes are allowed
● 220CC limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
25 +
● Minimum 25+ years old
● Air cooled vertical 4 stroke with max 19" front and 16" rear. Disc brakes are allowed
● 220CC limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
● Surron/Talaria/Eride or similar ebike allowed. Full size ebikes like Alta,Stark,etc are NOT allowed
30 +
● Minimum 30+ years old
● Air cooled vertical 4 stroke with max 19" front and 16" rear. Disc brakes are allowed
● 220CC limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
● Surron/Talaria/Eride or similar ebike allowed. Full size ebikes like Alta,Stark,etc are NOT allowed
40 +
● Minimum 40+ years old
● Air cooled vertical 4 stroke with max 19" front and 16" rear. Disc brakes are allowed
● 220CC limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
● Surron/Talaria/Eride or similar ebike allowed. Full size ebikes like Alta,Stark,etc are NOT allowed
MOMS ONLY
● Air cooled vertical 4 stroke with max 19" front and 16" rear. Disc brakes are allowed
● 190CC limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
● Surron/Talaria/Eride or similar ebike allowed. Full size ebikes like Alta,Stark,etc are NOT allowed
DADS ONLY
● Air cooled vertical 4 stroke with max 19" front and 16" rear. Disc brakes are allowed
● 220CC limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
● Surron/Talaria/Eride or similar ebike allowed. Full size ebikes like Alta,Stark,etc are NOT allowed
ADULT E-BIKE
●12 years of age or older
● No KW Limit
● Surron/Talaria/Eride or similar ebike allowed.
● Full size ebikes like Alta,Stark,etc are NOT allowed
YOUTH E-BIKE
● 11 years of age or younger
● No KW Limit
● Surron/Talaria/Eride or similar ebike allowed.
● Full size ebikes like Alta,Stark,etc are NOT allowed
WOMENS OPEN 12+
● 12 years of age or older
● 220cc Limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
GIRLS OPEN
4-11 YRS
● 11 years of age or younger
● 220cc Limit
● ALL internal motor modifications are allowed (cams, porting, boring, high comp pistons, heads, clutches, throttle body, carbs, manifolds, intakes kits, lightened flywheels, lightened oil spinners, etc)
● Aftermarket exhaust, ECU, CDI, triple clamps, wheels, etc are allowed
● Most aftermarket parts or modifications to the bike are allowed unless specifically stated in this rule section. Subject to change during the season
YOUTH BEGINNER
●2-9 years of age
● Must be riders 1st year of racing
● 50cc max limit
● Approved bikes: PW50, CRF50, KTM 50JR, KTM SX-E2, GasGas MC-E 2, Husqvarna EE 2)
YOUTH 4-8 YRS
● 4-8 years of age
● 110cc max limit
● Pitbike style bikes only. (No 2-strokes - KTM, Husky, Gasgas, Cobra race bikes)
● KTM SX E-2, GasGas MC E-2, Husqavarna EE-2 are ok.
YOUTH 9-11 YRS
● 9-11 years of age
● 110cc max limit
● Pitbike style bikes only. (No 2-strokes - KTM, Husky, Gasgas, Cobra race bikes)
● KTM SX E-2, GasGas MC E-2, Husqavarna EE-2 are ok.
YOUTH OPEN
4-11 YRS
● 4-11 years of age
● 110cc max limit
● Pitbike style bikes only. (No 2-strokes - KTM, Husky, Gasgas, Cobra race bikes)
● KTM SX E-2, GasGas MC E-2, Husqavarna EE-2 are ok.
50CC MICRO
(SHAFT DRIVE)
● 4-6 years of age
● 51cc max limit
●Single speed automatic. Max wheel size 10 inches.
● PW50, KTM SX E-2, GasGas MC E-2, Husqavarna EE-2 are ok.
50CC E-BIKE ONLY
● 4-8 years of age
● E-bike only, No gas Bikes. Maximum wheel size 12 inches. 1.5kWh max battery energy.
● KTM SX E-2, GasGas MC E-2, Husqavarna EE-2 are ok.
50CC 4-6
● 4-6 years of age
● 51cc max limit, Maximum wheel size 12 inches.
● KTM, GasGas, Cobra E-Bikes are NOT allowed
50CC 7-8
● 7-8 years of age
● 51cc max limit, Maximum wheel size 12 inches.
● KTM, GasGas, Cobra E-Bikes are NOT allowed
50CC OPEN
4-8 YRS
● 4-8 years of age
● 51cc max limit, Maximum wheel size 12 inches.
● KTM, GasGas, Husqavarna E-Bikes ok in the Open Class
65CC / 85CC
OPEN BEGINNER
● 7-15 years of age
● 65CC to 85cc max limit
● Must be riders 1st year of racing
65CC OPEN
7-11 YRS
● 7-11 years of age
● 65cc max limit
85CC OPEN
9-15 YRS
● 9-15 years of age
● 85cc max limit
MINI E-BIKE
12 INCH
2-3 YRS
● 2-3 years of age
● 12” max wheel
● Stacyc, SSR, XRT, Thumpster or equivalent. No OSET bikes.
● No bikes with suspension. Front forks or rear suspension
MINI E-BIKE
12 INCH
4-5 YRS
● 4-5 years of age
● 12” max wheel
● Stacyc, SSR, XRT, Thumpster or equivalent. No OSET bikes.
● No bikes with suspension. Front forks or rear suspension
MINI E-BIKE
16 INCH
4-5 YRS
● 4-5 years of age
● 16” max wheel
● Stacyc, SSR, XRT, Thumpster or equivalent. No OSET bikes.
● No bikes with suspension. Front forks or rear suspension
MINI E-BIKE
16 INCH
6-8 YRS
● 6-8 years of age
● 16” max wheel
● Stacyc, SSR, XRT, Thumpster or equivalent. No OSET bikes.
● No bikes with suspension. Front forks or rear suspension
MINI E-BIKE
18/20 INCH
COMBINED
● 11 years of age or younger
● 18” minimum - 20” max wheel
● Stacyc, SSR, XRT, Thumpster or equivalent. No OSET bikes.
● No bikes with suspension. Front forks or rear suspension
Suspension Examples
Conventional Forks

Inverted Forks

Swingarm Examples
A Style Swingarm

MX Style Swingarm
