Karts & Classes

The NHKA Racing Series has classes for every speed and budget. We offer 2-cycle and 4-cycle paths that racers can follow from their 5th to 75th birthdays, from Kid Karts all the way to Masters – in many cases with the same engine, making only minor modifications along the way. We work very hard to keep our rules aligned with other tracks and series to make it easier for you to race wherever you want, whenever you want. We want you to get maximum value and enjoyment out of your kart!

If you’re not sure which kart is right for you or your child email NHKA Race Director and Co-Owner, Mike Camarra at mikec@nhka.net, ask other racers by posting to our Facebook page, or find your local kart shop on our Links page.

 

2-Cycle Classes

NHKA 2-cycle classes offer high-revving speed and power with enough mechanical challenge to keep the race alive between events. The 2-cycle path starts with Comer or Honda powered Kid Karts and Cadets, or Rotax Micro Max and Mini Max. By the time drivers reach Junior age, they’re in full-size karts with fewer restrictions on their TaG (Touch and Go) engines that they can continue to race into the TaG Senior and TaG Masters age groups. Rounding out the NHKA class structure are the classic 100cc Senior karts, and of course shifters!

Kid Kart
AGE: 5-8 Years Old
TOP SPEED: 25 MPH
ENGINES: 50cc 2-Cycle – Comer C-50, Comer C-51 or Honda HPD GXH50
CHASSIS: Small, Baby Kart
MINIMUM WEIGHT: N/A
GEARING: 8.9 Gear Ratio
RULES: WKA
This class is for the youngest racers to develop basic driving skills along with their hand/eye/foot coordination. Generally there’s not much wheel-to-wheel competition. This is also where Dads learn the basics of working on a kart, and most importantly lay the foundation for a positive working relationship with their child. The more fun both have, the better they do in the years ahead. Every time.

Micro Max
AGE: 7-10 Years Old
TOP SPEED: 35 MPH
ENGINE: 125cc 2-Cycle TaG – De-tuned Rotax FR125 with Jr. Cylinder
CHASSIS: Intermediate 900mm-950mm Wheelbase Only – No Front Brakes
MINIMUM WEIGHT: 235lbs
SPEC GEAR: 14/73
TIRES: MG Red 4.60 x 5 Front and Rear
RULES: US Rotax MaxChallenge Challenge Micro & Mini
The same exact goals as all kid kart classes: developing basic driving skills and coordination. The key difference is the sealed Rotax engine, which gives a bit more speed, but also the flexibility to up-grade as the driver ages. This is a spec class, which means everyone runs the same sealed engine, tires and gear ratio. The mechanic (often Dad) can make a difference with chassis set-up and carb jetting, but primarily it’s up to the young racer to win with better driving. (See the Rotax note below.)

TaG Mini
presented by Prospeed Kart Sports
AGE: 9-12 Years Old
TOP SPEED: 45 MPH
MINIMUM WEIGHT: 245lbs
TIRES: MG Red 4.60 x 5 Front and Rear
MINI ROK & IAME SWIFT:
ENGINE RULES: TaG USA
GEARING: Open
CHASSIS: 950mm Wheelbase – No Front Brakes
ROTAX MINI MAX:
ENGINE RULES: USRMC Micro & Mini – EVO or NonEVO, no mixing
GEARING: 12/76 or 13/82
CHASSIS: 950mm or 1010mm Wheelbase – No Front Brakes
      NOTE: Mini Max may run 1010mm chassis with 6.0 x 5 rears, but must weigh 265lbs
With Mini karts, the speeds are a bit faster, corners are taken a bit quicker, and the spirit of competition starts to heat up. Our goal is for all racers to have a shot at winning no matter what brand chassis or engine they race, so we may make small adjustments to the rules. In TaG Mini the best driving earns the biggest trophy and biggest smiles.

TaG Junior
AGE: 12-15 Years Old
TOP SPEED: 65 MPH
ENGINE: 125cc 2-Cycle TaG – Rotax FR125 (jr. cylinder), Parilla Leopard (30mm header), IAME X30 (31mm header), or PRD Fireball (30mm header)
CHASSIS: Full-Size – No Front Brakes
MINIMUM WEIGHT: 300-320lbs – Depending Upon Engine (See Classes & Weights)
ENGINE RULES: TAG USA, Except Rotax – US Rotax MaxChallenge Rules
KART RULES: TAG USA
Some kids work their way up to this class, others enter the sport here (usually with indoor karting experience.) In either case, it’s exciting to watch the quick progress as they harness the speed and learn how a full-size kart should feel through a corner. It’s here they start working for every tenth of a second, and honing their wheel-to-wheel race craft.

TaG Senior
presented by CFMotorsports
AGE: 15+ Years Old
TOP SPEED: 80 MPH
ENGINE: 125cc 2-Cycle TaG – Rotax FR125, Parilla Leopard, IAME X30, PRD Fireball, Sonik Sport, or Sonik TX1
CHASSIS: Full-Size – No Front Brakes (Masters karts with front brakes must run their Masters weight)
MINIMUM WEIGHT: 350-380lbs – Depending Upon Engine (See Classes & Weights)
ENGINE RULES: TAG USA, Except Rotax – US Rotax MaxChallenge Rules
KART RULES: TAG USA
It’s graduation time! This class features unrestricted 125cc TaG engines strapped to full-size karts. While most young racers in this class have spent at least a year or two in TaG Jr., even the beginners catch on quickly as they work to keep up with the competition. More than a few lightweight adults run this class and enjoy the challenge of going up against racers half their age!

TaG Masters
AGE: 32+ Years Old
TOP SPEED: 80 MPH
ENGINE: 125cc 2-Cycle TaG – Rotax FR125, Parilla Leopard, IAME X30, PRD Fireball, Sonik Sport, or Sonik TX1
CHASSIS: Full-Size – Front Brakes Allowed
MINIMUM WEIGHT: 390-415lbs – Depending Upon Engine (See Classes & Weights)
ENGINE RULES: TAG USA, Except Rotax – US Rotax MaxChallenge Rules
KART RULES: TAG USA
One of our most popular classes, TaG Masters grids are typically 15+ karts deep, making for some of the most competitive club racing anywhere. It’s fierce, but they race each other knowing they all gotta go to work Monday. Masters karts are set up with more weight than Senior karts to help level the playing field for heavier drivers. If you’re an adult who always wanted race, this class is your dream come true!

Rotax – The Original TaG Engine
The Northeast is where the Rotax FR-125 MAX and push-button start TaG (touch and go) classes began in the US, so you’ll see a lot of them around. With stout power, reliability and availability of parts and service, they remain popular. However, the TaG market has heated up with great new engine options such as the IAME X30 and others. Rotax has responded with a number of product updates, including the Rotax EVO. A significant number of Rotax owners felt there were too many updates and switched brands. This has resulted in lots of affordable used Rotax packages and parts for sale at various stages of update. No need to pass-up these deals, especially if it’s your first kart and you’re short on funds. NHKA rules allow you to run any unaltered Rotax-made parts of any vintage so long as they’re configured as directed by the US Rotax MaxChallenge rulebook. A good rule of thumb being FR125 with FR125, EVO with EVO, no mixing.

100cc Pipe
AGE: 15+ Years Old
TOP SPEED: 85 MPH
ENGINE: 100cc Piston Port 2-Cycle with a Pipe Exhaust
Chassis: Sprint Enduro
MINIMUM WEIGHT: 360lbs
RULES: AKRA
NOTE: This Class Does Not Race at F1 Outdoors Due to Sound Restrictions
With a nod to old-school karting, and the club’s road racing roots, this is the classic combination of chassis and engine… typically a Yamaha KT-100. This class teaches the rewards of smooth driving and maintaining momentum. It’s a fun and affordable way to go 2-cycle racing.

4-Cycle Classes

NHKA 4-cycle classes offer the close competition of sealed, box-stock engines with low-maintenance reliability and affordability. The 4-cycle path is structured primarily around the Briggs 206 (formerly known as the Local Option 206 or LO-206.) A racer can start out in Kid Karts or Cadets, and race their way through Junior and Senior classes up to Masters with the same Briggs 206 engine simply by changing the $13 carburetor slide. Once at Senior age the NHKA offers the option to switch over to the higher horsepower Briggs World Formula engine.

Briggs 206 Kid Kart
AGE: 5-8 Years Old
TOP SPEED: 25 MPH
ENGINE: Briggs 206 – Long Black Carb Slide, 4,150rpm Black Ignition, and MaxTorque clutch
CHASSIS: Small
MINIMUM WEIGHT: N/A
SPEC GEAR: 3.35 Gear Ratio
TIRES: MG Red 4.60 Front and Rear
ENGINE RULES: Briggs 206 Engine Class Regulations
KART RULES: AKRA
This class is for the youngest racers to develop basic driving skills along with their hand/eye/foot coordination. Generally there’s not much wheel-to-wheel competition. This is also where Dads learn the basics of working on a kart, and most importantly lay the foundation for a positive working relationship with their child. The more fun both have, the better they do in the years ahead. Every time.

Briggs 206 Cadet
AGE: 7-12 Years Old
TOP SPEED: 30 MPH
ENGINE: Briggs 206 – Red Carb Slide. 2017 ONLY: Comer K-80 with 5.30 gear ratio at 245lbs
CHASSIS: Intermediate – No Front Brakes
MINIMUM WEIGHT: 265lbs
SPEC GEAR: 3.35 Gear Ratio
TIRES: MG Red – 4.60 Front / 6.00 Rear
ENGINE RULES: Briggs 206 Engine Class Regulations
KART RULES: AKRA
4-cycle karts are a perfect entry point for kids just getting into the sport or transitioning from indoor karts. The Briggs 206 sealed engine is affordable and reliable which keeps the focus on the fun of racing.

Briggs 206 Junior
AGE: 12-15 Years Old
TOP SPEED: 40 MPH
ENGINE: Briggs 206 – Yellow Carb Slide
CHASSIS: Full-Size – No Front Brakes
MINIMUM WEIGHT: 310lbs
TIRES: MG Red – 4.60 Front / 6.00 Rear
ENGINE RULES: Briggs 206 Engine Class Regulations
KART RULES: AKRA
For the kids coming up from Briggs 206 Cadet, 206 Junior is where the restrictor plates come off. But there are just as many kids who enter the sport at this age. At this age the kids really start to work on their driving. Because the engine rules dictate everything be box-stock, the races are won by the fastest kid rather than the richest dad.

Briggs 206 Senior/Masters
AGE: 15+ Years Old
TOP SPEED: 50 MPH
ENGINE: Briggs 206
CHASSIS: Full-Size – No Front Brakes
MINIMUM WEIGHT: Light 360lbs / Heavy 390lbs
TIRES: MG Red – 4.60 Front / 6.00 Rear
ENGINE RULES: Briggs 206 Engine Class Regulations
KART RULES: AKRA
If you’re an experienced karter or just getting your start in the sport, a Briggs 206 might be the right choice for you… it certainly has been for a lot of people across the US and Canada. And no wonder given how affordable, reliable and simple to maintain the package is. The key difference between it and the Briggs World Formula (aside from having somewhat less power) is that you can pretty much race it at any kart track in North America without changing a thing. That includes prestigious national events like the Rock Island Grand Prix and 206 Cup events. How far you take your racing is completely up to you.

Briggs 206 – Compete Wheel-to-Wheel, not Wallet-to-Wallet
Have you ever wondered, given the chance, how good of a racer could you or your kid could be? Let’s find out! Thanks to the Briggs 206 it’s never been easier or more affordable to scratch your racing itch. You can get a new race-ready 206 kart for about $4k, or bolt a new 206 engine onto a used chassis for about half that. This is pure spec racing. Everyone has the same tires, fuel and engine. Each 206 is hand built in the USA by Briggs & Stratton to incredibly tight tolerances then sealed to keep out the cheaters. You’re free to tune your chassis, but mostly you focus on being the best driver. With basic maintenance, your Briggs 206 engine can deliver two seasons of competitive racing without a rebuild, making it the perfect fit for racers with busy lives.

World Formula Light and Heavy
presented by CFMotorsports
AGE: 15+ Years Old
TOP SPEED: 65 MPH
ENGINE: Briggs World Formula
CHASSIS: Full-Size – No Front Brakes
MINIMUM WEIGHT: Light 360lbs / Heavy 390lbs
TIRES: MG Red, Front 10-4.60 x 5, Rear 11-7.10 x 5 on 7″ wheels
ENGINE RULES: NHKA World Formula Engine Program
KART RULES: AKRA
With speed and power halfway between indoor karts and TaG karts, and a bit beyond the Briggs 206, World Formula is a great entry to outdoor racing for older teens and adults. Thanks to box-stock rules and the relatively low purchase price of the engine, this is the perfect class for new and experienced racers just looking to have a bit of fun. What’s more, their reliability make them perfect for the less mechanically inclined. No wonder this has been such a fast growing class for the NHKA.

Shifter Karts

Stock Moto Shifter
AGE: 15+ Years Old
TOP SPEED: 100+ MPH
ENGINE: 125cc 2-Cycle with a 6-Speed Manual Gearbox
CHASSIS: Full-Size – Front Brakes Required
MINIMUM WEIGHT: 395lbs
RULES: F-Series/TAG USA
Typically powered by an adapted Honda CR125 (though we do see Yamaha and Kawasaki engines) Stock Motos are the most popular shifter karts coast to coast. They are powerful, fast, reliable and surprisingly low maintenance. Also contributing to their popularity is that they are featured in the biggest kart race in the country, the SKUSA SuperNationals, every November in Las Vegas.

KZ2 Shifter
AGE: 15+ Years Old
TOP SPEED: 100+ MPH
ENGINE: Various 125cc 2-Strokes with a 6-Speed Manual Gearbox
CHASSIS: Full-Size – Front Brakes Required
MINIMUM WEIGHT: 385lbs
RULES: F-Series/TAG USA
These engines are purpose-build for karts, and are the ultimate thrill ride in kart sprint racing! The shifter engine of choice in Europe, they deliver big-time speed and power, plus the coordination challenge of shifting, braking and turning all at the same time while maintaining maximum momentum. KZ racing has enjoyed a resurgence within the F-Series regional championship, which boasts the largest fields in the US. Come to an NHKA race to chat with our shifter racers, many of whom also run that series too.