USACi  CLASSES & DIVISIONS

STREETBEAT

NOTE: Number of subs listed indicates the MAXIMUM number of that size speaker allowed in that class.
CLASS 10” SUBS 12” SUBS 15” SUBS 18” SUBS
SB1 2 1 0 0
SB2 3 2 1

0

SB3 6 4 2 1
SB4 7+ 5+ 3+ 2+
SB5 Open Open Open Open

.

in RED - Consumers Only; n          Blue - All Competitors Season 
Division &
Power Class
Amplifier
Quantity
Allowed Vehicle
Interior Modifications
Battery
Quantity
Allowed
Caps

Alternators
Max
Volts
Max RPM's
               
Street Beat Divisions
Street Beat - 1 Unlimited Limited* 2 + Stock Unlimited 1 14.7 1200
Street Beat - 2 Unlimited Limited* 4 + Stock Unlimited 1 14.7 1200
Street Beat - 3 Unlimited Limited* 6 + Stock Unlimited 1 14.7 1200
Street Beat - 4 Unlimited Limited* 8 + Stock Unlimited 1 14.7 1200
Street Beat - 5 Unlimited Limited* Unlimited Unlimited Unlimited 18 1200
               
Stock Divisions
Stock 0-600 Watts 1 No 1+ Stock** Unlimited Unlimited 14.7 1200
Stock 601-1800 Watts 3 No 1+ Stock** Unlimited Unlimited 14.7 1200
Stock 1801+ Watts Unlimited No Unlimited Unlimited Unlimited 14.7 1200
               
Super Stock Divisions
Super Stock 0-600 Watts 1 Behind "B" Pillar - Below Glass 2 + Stock Unlimited Unlimited 18 1200
Super Stock 601-1800 Watts 3 Behind "B" Pillar - Below Glass 6 + Stock Unlimited Unlimited 18 1200
Super Stock 1801+ Watts Unlimited Behind "B" Pillar - Below Glass Unlimited Unlimited Unlimited 18 1200
               
Modified Divisions
Modified 0-1000 Watts 2 Behind the "B" Pillar 6 + Stock Unlimited Unlimited 18 1200
Modified 1001-2000 Watts 4 Behind the "B" Pillar 12 + Stock Unlimited Unlimited 18 1200
Modified 2001-4000 Watts 8 Behind the "B" Pillar 18 + Stock Unlimited Unlimited 18 1200
Modified 4001+ Watts Unlimited Behind the "B" Pillar Unlimited Unlimited Unlimited 18 1200
               
Super Modified Divisions
Super Modified 0-4000 Watts 8 Yes Unlimited Unlimited Unlimited 18 1200
Super Modified 4001+ Watts Unlimited Yes Unlimited Unlimited Unlimited 18 1200
               
Trunk Divisions
Trunk 0-1000 Watts 2 Trunk Only 1+ Stock** Unlimited 1 14.7 1200
Trunk 1001+ Watts Unlimited Trunk Only 2+ Stock** Unlimited Unlimited 14.7 1200
               
Port Wars Division
Port Wars Unlimited Yes Unlimited Unlimited Unlimited 18 1200
Super Port Wars Unlimited Yes Unlimited Unlimited Unlimited 18 1200
               


* No constructed enclosure or speaker placement that may manipulate the SPL sensor may be placed forward of the "B" pillar and will be considered reason to reclassify the vehicle to the Port Wars or Super Port Wars divisions or disqualification. This decision will be at the discretion of the head judge. Factory or factory replacement front seats must be installed in the vehicle in factory locations. Must have the front bench or both front seats. No woofers larger than 8" inches may be forward of the "B" pillars.

** The physical size of each battery is limited to 800 cubic inches (13110 cubic cm) or less. (Height x Length x Width. Excluding the battery terminals.) The physical shape of the battery is irrelevant. A 12 volt battery is defined as a battery that has a nominal terminal voltage of 12-Volts, consists of 6 internal series-connected cells, and is lead/acid or gel-type. A 16 volt battery is defined as a battery that has a nominal terminal voltage of 16-Volts, consists of 8 internal series-connected cells, and is lead/acid or gel-type. A battery shall have no more than two “unique” battery terminals connected to the system, one being positive and the other being negative. Batteries with more than two posts connected to the vehicle or system will be counted as multiple batteries. Batteries that exceed these 800 cubic inches or exceed allowed number of cells will be considered multiple batteries.   (Example: 801-1600 cubic inches is tow batteries. 12 volt battery with 7 to 12 cells would be two batteries, and so on). 

These limitations apply to all classes with defined battery limits
Any class and/or division that allows unlimited batteries will not be bound by this definition