top of page

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

image.png

Inverted Forks

image.png

Swingarm Examples

A Style Swingarm

image.png

MX Style Swingarm

image.png

© 2021 by BLACK DIAMOND PROMOTIONS. Proudly created with Wix.com

  • Facebook
  • Instagram
bottom of page