A Hammerhead go kart is an off-road recreational kart from the Hammerhead brand, a name you will see on mid-size karts such as the 80T and Mudhead and on larger 150cc and 250cc machines such as the GTS150. Many of these karts now change hands on the used market, so the practical questions are which model you are looking at, whether parts are still available, and what to inspect before paying. This guide works from current aftermarket parts listings, the clearest public record of which models exist and what they share, and turns that into a buying and inspection plan.
Part of our Off-Road Go-Karts guide — explore the full guide →
What Is a Hammerhead Go Kart?
Hammerhead karts are off-road buggies. Like most karts in this class they typically use a tubular steel frame with a cage, seat belts, a single-cylinder four-stroke engine and a belt-driven torque converter or CVT, though the exact equipment of each model is not stated in the data. They are built for yards, trails and private land rather than racing, and they are not built to any sanctioning body’s class rules.
The data available for this guide contains parts listings only, not full Hammerhead retail listings. That means engine sizes and model names below come from fitment notes written by parts sellers. These are useful but not authoritative, and in places they contradict each other. The listings do not describe the company’s history, ownership or current production status, so check with a dealer whether new units and factory parts are still being supplied in your region.
For the broader category, start with our off-road go-kart guide.
Hammerhead Go Kart Models Named in Parts Listings
80T. A mid-size kart named in listings for a brake master cylinder, a clutch and belt cover, a starter motor, a steering spindle, a recoil starter and a 30 series torque converter belt. Several of those parts are also listed for TrailMaster Mid XRX karts, which suggests a shared mid-size platform. A carburetor listing for 208cc karts states it does not fit the 80T.
Mudhead and 208R. A carburetor listing describes the Mudhead and 208R as 208cc karts fitted with LCT engines. A brake pad listing, however, calls the Mudhead a 150cc kart. That is a direct contradiction between sellers, so confirm the engine on the actual kart rather than trusting either label. A canopy top and a steering spindle are listed as shared with the TrailMaster Mid XRX.
GTS150, SS150, 150SS, 150GT and LE150. Larger 150cc karts named in listings for a GY6-style 24 mm carburetor, an air filter with part number 6.000.151, a fuel petcock, an 82 inch throttle cable and a 3-wire ignition switch. The GY6 connection is useful because GY6 parts are widely available; our GY6 go-kart engine guide explains that engine family.
SS250 and GTS250. 250cc models named only in the ignition switch listing.
Twister 150. Named in a carburetor listing that also references TJ Power Sports and replacement number 16100-KAT-913. Whether the Twister is a Hammerhead model, a related brand or a rebadge is not clear from the data.
Torpedo. Named alongside the 80T and Mudhead in a clutch and belt cover listing.
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Hammerhead Models Compared
| Model | Size Class | Engine (as listed by parts sellers) | Example Parts Listed | Notes |
|---|---|---|---|---|
| 80T | Mid-size | Not stated | Master cylinder, belt, starter, spindle, belt cover | Parts overlap with TrailMaster Mid XRX |
| Mudhead / 208R | Mid-size | 208cc LCT, or 150cc per one listing | Carburetor, throttle cable, canopy, brake pads | Engine size conflicts between listings |
| GTS150 / SS150 / LE150 | Full-size | 150cc, GY6-style carb | Carb, air filter 6.000.151, petcock, ignition switch | GY6 parts widely available |
| SS250 / GTS250 | Full-size | 250cc | Ignition switch | Little parts data |
| Twister 150 | Not stated | 150cc | Carburetor 16100-KAT-913 | Brand relationship unclear |
Treat this table as a starting point for identification, not a spec sheet. Top speeds, weights, rider limits and warranty terms are not stated anywhere in the data.
Parts Availability and Shared Part Numbers
The good news for owners is that a lot of Hammerhead hardware is shared with other brands. The clutch and belt cover listing gives Hammerhead part number 8.110.021, with TrailMaster 8.110.021-A and an American Landmaster equivalent. The brake master cylinder listed for the 80T carries reference 6.000.305 and is also listed for TrailMaster Mid XRS and XRX karts and mid-size American Sportworks models; one listing describes it as single-port for the rear caliper. The canopy top listed for the Mudhead carries number 6.000.320.
This overlap means a part listed for a TrailMaster mid-size kart may fit a Hammerhead 80T or Mudhead, but only where the listing says so. Several listings explicitly exclude models, for example the 208cc carburetor that does not fit the 80T. Always match part numbers and compare against your old part.
The 150cc karts benefit from GY6 commonality. Carburetors, petcocks and air filters are sold to fit long lists of Chinese scooters, buggies and karts. The trade-off is quality variation, which our Chinese go-kart parts guide covers in detail.
Throttle cables are a good example of why measuring matters: the listing for the GTS150 and Mudhead 208R gives 82 inches. Our throttle cable guide explains how to measure and route a replacement.
Buying a Used Hammerhead Go Kart
Most buyers will find these karts used, through local classifieds, powersports dealers taking trade-ins, and online marketplaces. Asking prices vary widely with model, condition and region. As a rough guide, mid-size karts in tired condition often sell for a few hundred dollars, while clean full-size 150cc or 250cc karts can ask considerably more. Base your offer on the parts the kart needs, not on the seller’s original purchase price.
Identify the model first. Find the model name on the body or frame, and photograph the VIN or frame number and the engine stamping. With the parts data this inconsistent, knowing the exact engine is what lets you order the right carburetor, belt or filter later.
What to Inspect Before You Buy
- Cold start. Ask the seller not to warm it up. Electric-start models should crank briskly; a slow crank points to a weak battery or starter.
- Idle and throttle. Surging or stalling often means a gummed carburetor from stale fuel. That is fixable but worth negotiating on.
- Drive belt and clutch. On torque converter karts, look for a glazed or cracked belt and check the belt cover is fitted. On GY6 karts, listen for slipping or shuddering on pull-away.
- Brakes. The pedal should be firm. Check the master cylinder reservoir, fluid color and lines for leaks.
- Steering. Lift each front wheel and rock it to feel for play at the spindles and tie rods.
- Frame and cage. Look for cracked welds, bent tubes, rust at the seat mounts and any signs of a rollover.
- Safety equipment. Seat belts or harness should latch, retract and show no fraying.
- Tires, chain and sprockets. Check for dry rot, stretched chain and hooked sprocket teeth.
- Electrical. Test the ignition switch, kill switch and any lights.
Our full used go-kart buying guide covers paperwork, test drives and red flags in more depth.
Red Flags
Walk away, or price accordingly, if you see a cracked frame weld, heavy blue smoke, a seized brake caliper, a missing belt cover, or a seller who cannot identify the model or engine. Also be wary of a kart with an unknown replacement engine, because many listings depend on the original engine type for fitment.
Pros and Cons
Pros
- Many parts shared with TrailMaster and American Sportworks mid-size karts
- 150cc models use widely available GY6 style parts
- Often available used at modest prices
- Canopy, belt cover and brake parts still listed by aftermarket sellers
Cons
- Engine sizes and model names conflict between parts listings
- Factory specs such as speed and weight are not stated in the data
- Aftermarket quality varies by seller
- Supply of factory parts may vary by region
Frequently Asked Questions
What engine is in a Hammerhead Mudhead?
Are Hammerhead and TrailMaster parts interchangeable?
Does the Hammerhead GTS150 use a GY6 engine?
How fast is a Hammerhead go kart?
Where can I find Hammerhead go kart parts?
What should I check on a used Hammerhead kart?
Final Thoughts
A used Hammerhead kart can be a sensible buy if you confirm the exact model and engine, inspect it carefully, and accept that parts fitment needs checking against numbers rather than names. If you would rather buy new, compare current options in our best off-road go-karts roundup.