2WD Super Modified
High-horsepower 2WD trucks built specifically for competition pulling.
- Long-wheelbase, tube-chassis style builds.
- Dedicated pulling tires and high-power engines.
- Strict safety and chassis requirements.
2024–2025 Official Rules
Southern Pullers Association Rulebook
Everything you need to compete – class specs, safety requirements, tech inspection, and event procedures. View the interactive version or download the PDF.
Last updated: January 2026
New to Southern Pullers?
You don't have to be a professional team to get started. We're a family-friendly organization and welcome new pullers every season.
- Our events are open to the public – bring your truck or tractor when it meets class rules.
- Each class has its own weight, tire, engine, and safety guidelines in the rule book.
- Tech officials are available to answer questions and help you find the right class.
- You can message us on Facebook or talk with a SPA tech at any event before you ever hook.
Step 1: Read your class rules.
Step 2: Reach out with questions.
Step 3: Get your vehicle teched and come have fun with us.
Step 3: Get your vehicle teched and come have fun with us.
Class Overview
This is a high-level look at the main Southern Pullers classes. Always use the rule book for exact wording and measurements.
4WD Modified
Four-wheel-drive competition trucks with serious engine and chassis work.
- Purpose-built pulling setups with aggressive driveline components.
- Engine and charger limits defined in the rule book.
- High emphasis on safety equipment and hitch specs.
Light Pro Stock Tractor
Hot farm / pro-level tractors with strict weight, turbo, and fuel rules.
- Specific weight and turbocharger limits.
- Roll cages, wheelie bars, and kill switches required.
- Read all engine and chassis requirements carefully.
Super Semi
Big-rig semis built to put on a show while staying within defined limits.
- On-highway style cabs with pulling modifications.
- Turbo and engine rules listed in the rule book.
- Weight and safety items strictly enforced.
2.6 Prostreet Diesel
Street-style diesel pickups with a 2.6-inch charger limit and chassis rules.
- Charger size and fuel pump limits.
- DOT tires with size rules, suspension guidelines.
- Hitch and safety rules must be followed exactly.
2WD Pro Stock
Strong-running gas or alcohol trucks with tighter limits than the Super Modifieds.
- Engine, fuel, and induction rules defined in rule book.
- Specific weight breaks and hitch measurements.
- Great option for serious competitors stepping up.
2WD Modified
Modified 2WD trucks with more flexibility than Pro Stock classes.
- Expanded engine and chassis modifications allowed.
- Check rule book for specific limits.
- Popular class for experienced pullers.
4WD Pro Stock
Four-wheel-drive Pro Stock trucks with defined performance limits.
- Engine and induction rules specific to class.
- Weight and hitch specifications enforced.
- Competitive class with strong competition.
2WD Non-Blown
Naturally aspirated 2WD trucks without forced induction.
- No superchargers or turbos allowed.
- Engine and weight limits in rule book.
- Great entry point for new competitors.
2WD Prostreet
Prostreet style 2WD trucks that still resemble something you could see on the road.
- Body, frame, and tire rules aimed at a "street-based" look.
- Set engine and induction limits for the class.
- Good stepping stone into higher-horsepower ranks.
4WD Prostreet
Four-wheel-drive Prostreet trucks with defined weight and tire limits.
- Factory-style frames with allowed modifications.
- Closely controlled tire and hitch rules.
- Designed to keep trucks competitive and safe.
Reminder:
This section is only a summary. For tech inspection and event eligibility,
the wording in the official rule book PDF always takes priority.
Questions? Talk with a SPA Tech Official
We'd rather answer your questions ahead of time than turn you away at the scales.
- At an event: Stop by registration or the tech area and ask for a SPA tech official.
- On Facebook: Message the Southern Pullers Association page with your class and questions.
- Before you build: Send pictures, measurements, or ideas so we can help you pick the right class.
Do I have to bring my vehicle to a pull before I know where it fits?
No. You can reach out ahead of time, share photos and specs, and we'll help you understand which
class is the best match before you ever hook to the sled.
What happens if my vehicle doesn't meet the rules the first time?
Tech officials will explain what needs to be changed. Sometimes it's a small fix (hitch height, weight,
safety equipment). The rule book lays out what is required for your class.
