2024 SEMA MX Class Rules
50cc
4-6 E2 (runs with PW class)
50cc 4-6 PW ONLY – Yamaha PW only, stock bore, stock stroke
50cc 4-6 (10″ WHEEL MAX) – KTM mini/cobra jr. – stock bore, stock stroke
50cc 4-6 AIR COOLED – 10″ MAX
50cc 4-9 BEGINNER – 12″ MAX – E bike is allowed – MUST BE A BEGINNER – stock bore, stock stroke :
50cc 7-9 (12″ WHEEL MAX) – stock bore, stock stroke
50cc 4-9 OPEN – 12″ MAX – stock bore, stock stroke
4-9 E-Bike (runs with open class)
65cc
* 65cc 7-9 – Intermediate / advanced – stock bore, stock stroke
* 65cc 7-9 C – Novice – stock bore, stock stroke
* 65cc 10-11 – Intermediate / advanced – stock bore, stock stroke.
* 65cc 10-11 C – Novice – stock bore, stock stroke
* 65cc 7-11 OPEN – stock bore, stock stroke
65/85cc
* 65/85cc 7-14 GIRLS – MAX 85cc 2 stroke / 150cc 4 stroke – MAX FRONT WHEEL 17″
* 65/85cc 7-14 JR MINI OPEN – MAX 85cc 2 stroke / 150cc 4 stroke – MAX FRONT WHEEL 17″
85cc
* 85cc 9-11 – Intermediate / advanced – 150cc 4 stroke ALLOWED – NO BIG WHEEL – stock bore, stock stroke.
* 85cc 9-11 C – Novice – 150cc 4 stroke ALLOWED – NO BIG WHEEL – stock bore, stock stroke
* 85cc 12-15 – Intermediate / advanced – 150cc 4 stroke ALLOWED – BIG WHEEL ALLOWED – stock bore, stock stroke
* 85cc 12-15C – Novice – 150cc 4 stroke ALLOWED – BIG WHEEL ALLOWED – stock bore, stock stroke
* 85cc 9-15 OPEN – 150cc 4 stroke ALLOWED- BIG WHEEL ALLOWED – stock bore, stock stroke.
SCHOOLBOY
* SCHOOLBOY 11-17- Intermediate / advanced – 125cc 2 stroke / 250cc 4 stroke – stock bore, stock stroke
* SCHOOLBOY 11-17 C – Novice – 125cc 2 stroke / 250cc 4 stroke – stock bore, stock stroke
OPEN
SENIOR – Parents Class
12-17 OPEN – 125cc – open 2 or 4 stroke – Rider MUST be 16 years old to ride a 450cc
WARRIOR 17 and up cannot race senior Military members ONLY