American Flat Track Racing: The Complete Guide to the Sport, the Bikes, and What It Takes to Compete

American Flat Track is one of the oldest forms of motorcycle racing in the United States — and one of the least understood by people outside its devoted fan base. It doesn't involve road courses, hairpin turns, or standing water. It takes place on oval dirt tracks where riders race without brakes, leaning their machines at extreme angles while their rear tires slide deliberately through every corner. If you've ever watched it, the combination of controlled chaos and raw mechanical simplicity is difficult to forget.

This page is the starting point for everything AFT-related on this site — from understanding the sport's structure and bike classes to what participation actually costs, what licensing requires, and how track conditions shape strategy. Whether you're a fan trying to understand what you're watching or a rider exploring whether flat track is worth pursuing, here's how it works.

What American Flat Track Actually Is 🏍️

American Flat Track (AFT) is the premier sanctioned flat track motorcycle racing series in the United States, organized by Progressive American Flat Track, a division of Feld Motor Sports. It is not the same as motocross, road racing, or supermoto — though it shares DNA with all three. Flat track racing happens on oval-shaped dirt tracks ranging from short ovals (roughly a quarter-mile) to larger mile-long circuits. Riders accelerate hard down straightaways and then slide the rear wheel through unbanked turns using throttle, body position, and a steel shoe dragged on the ground for stability.

The sport traces its roots to early twentieth-century American motorcycle culture. It predates most organized motorsports categories, and its technical rules have evolved significantly — but its essential character has stayed the same: fast, loud, analog, and dangerous. The AMA (American Motorcyclist Association) played a central role in the sport's development, and many of the rule foundations that govern AFT today descend from AMA competition standards.

The Class Structure

AFT organizes competition into distinct classes, and understanding those classes is essential to following the sport or pursuing it yourself.

AFT SuperTwins is the top-tier premier class. These are purpose-built or heavily modified machines displacing up to 750cc (parallel twin or V-twin configurations), running on oval tracks up to one mile in length. Riders in this class represent the highest level of professional flat track competition in North America.

AFT Singles serves as both a competitive class in its own right and the primary development class feeding into SuperTwins. As the name suggests, these are single-cylinder machines with displacement typically capped at 450cc. Singles racing tends to be tighter and more tactical — the power differential between riders is smaller, which puts a higher premium on track positioning and racecraft.

Below the national AFT series, a broader ecosystem of regional and amateur flat track racing exists under various sanctioning bodies, including WERA, AMMA, and state-level AMA affiliates. These regional series use overlapping but not identical rules, and entry costs, licensing requirements, and competition formats vary considerably depending on where you race.

How the Bikes Work — and Why They're Different

Flat track bikes are purpose-built for a specific physical task: going fast on a loose dirt oval with no braking zones. That constraint produces some unusual engineering choices.

No front brakes. This is the defining mechanical characteristic of flat track bikes. Because the tracks are loose and oval-shaped, a front brake would cause the front wheel to wash out in the turns. Riders use the rear brake sparingly and rely almost entirely on throttle modulation and controlled slides to manage speed through corners.

Frame and suspension geometry is tuned for lateral flex and predictable slide behavior rather than the straight-line stability you'd want on a road course. The bikes sit low and are built to rotate on the rear axle.

Tires are a critical variable. Flat track tires use a rounded profile and a tread pattern specific to dirt. Track surface composition — blue groove (packed, slick clay), loam, sand, or mixed — determines which tire compounds and pressures riders choose. Tire selection can make or break a race result.

Engine configurations in the top class are typically parallel twins or V-twins producing significant horsepower in a lightweight package. Singles in the lower class prioritize reliability and consistency over outright power. Most national-level bikes are heavily modified production-based engines, though some are purpose-built racing units.

Fuel, cooling systems, and ignition mapping all factor into setup decisions that teams adjust based on track conditions, ambient temperature, and distance. At the national level, a competitive AFT team carries significant technical infrastructure to every event.

Track Types and How They Shape Racing 🏁

Flat track events happen on several distinct surface types, and each rewards different skills and setups.

TT (Tourist Trophy) is the exception in flat track: it introduces jumps and, unlike standard ovals, requires a right-hand turn alongside left-handers. This format demands different body positioning, braking technique, and setup choices — some riders specialize in it, while others find it outside their strengths.

What Participation Requires

Getting involved in flat track racing — even at the amateur level — involves several layers of preparation that go beyond buying a bike and showing up.

Licensing is the first step. At the national AFT level, riders must hold a valid competition license issued through the sanctioning body. At regional and amateur levels, AMA competition licenses or equivalent credentials through the relevant sanctioning organization are typically required. Licensing processes generally involve paperwork, fees, and sometimes a safety orientation. Requirements vary by series and class, so riders need to confirm what applies to the specific events they want to enter.

Safety equipment requirements are detailed and class-specific. At minimum, this means a rated helmet (Snell or equivalent), leather or abrasion-resistant racing suit, gloves, boots, and the distinctive steel shoe worn on the left foot to protect against pavement and to assist cornering. Chest protectors and back protectors are standard at competitive levels, and neck braces are increasingly common. The exact specifications required — helmet rating, suit construction, boot height — differ by sanctioning body and class.

Tech inspection happens at every event. Bikes must pass scrutineering before going on track, which checks equipment against class rules: displacement, approved components, safety features, and compliance with the specific class regulations. A bike that doesn't pass tech doesn't race, and the burden of compliance falls entirely on the rider or team.

Insurance and waivers are standard at all organized events. Most venues and series require proof of personal accident coverage and will have participants sign liability releases. Some tracks carry their own medical coverage for on-site incidents; others do not. Riders should understand what coverage applies before entering an event.

The Cost Landscape

Flat track is genuinely more accessible than many motorsports disciplines — but "accessible" is relative, and costs span a wide range depending on how seriously a rider competes.

At the grassroots level, amateur flat track can be done on a modest budget using a legal production-based bike, shared trailer transport, and used safety gear. Entry fees at regional amateur events vary significantly by location and series. Consumables — tires, fuel, chain and sprocket wear, crash-related parts — add up over a season regardless of level.

At the national professional level, costs scale dramatically. Factory-supported or semi-factory teams carry full technical staff, spare engines, and extensive tire and parts inventories to every round. Independent professional riders without factory support face some of the most challenging economics in motorsports: high operating costs against uncertain prize purses.

Between those extremes, the intermediate regional amateur rider — competing regionally with a competitive but not factory-level bike — can expect costs that vary considerably based on region, frequency of racing, and whether the rider handles their own maintenance. There's no single reliable number that applies universally here, and anyone budgeting for flat track competition should seek out cost breakdowns from riders currently active in their target series.

What Shapes Results — and What Riders Can Control

Flat track is a sport where mechanical preparation, physical fitness, and track-reading ability all matter — but none of them individually predicts outcomes.

Track surface reading is a skill that separates competitive riders from fast-but-inconsistent ones. Dirt tracks evolve significantly over the course of a race day: the surface can go from rough and loamy to blue groove to deteriorated ruts depending on weather, prep, and traffic. Riders who can adapt their line choice, throttle timing, and tire pressure to a changing surface tend to pace themselves better late in races.

Setup communication between rider and mechanic (or the rider themselves, at the amateur level) determines whether the bike works with the rider's style or against it. Gearing choices affect exit drive and top speed. Suspension setup affects how predictably the bike slides. Small changes can produce large differences in lap times.

Physical conditioning — particularly core strength, grip endurance, and cardiovascular fitness — affects how consistently a rider performs over 15 or 20 laps at race pace. Flat track is physically demanding in ways that aren't obvious to spectators.

Experience on different track types matters because a rider who has only raced short tracks will face a significant learning curve at a mile oval, and vice versa. Building breadth across surface types and distances is a long-term process.

The Broader Context: AFT Within Motorsports

American Flat Track occupies a specific niche in the motorsports landscape that's worth understanding if you're coming from another discipline. It shares the tire-slide vocabulary of supermoto but without pavement sections. It shares the oval format of speedway but uses conventional tires rather than the spiked tires used in that discipline. It draws mechanical knowledge from motocross but rewards very different physical inputs.

The sport has experienced genuine growth in recent years in terms of both attendance and media coverage, with the series carrying a national broadcast presence. That visibility has drawn new participants and manufacturers into the sport, which has gradually raised the technical baseline — particularly in the SuperTwins class.

For anyone entering the sport, or simply trying to understand what's happening at the track on a race day, the core principle is worth holding onto: flat track rewards precision and adaptability more than raw bravado, even though it doesn't always look that way from the fence.