What go karts go 50 mph

So you want a go-kart that can hit 50 mph? That's a whole different beast from the putt-putt karts at the local track. We're talking high-performance machines here, built for people who actually know what they're doing. These aren't your backyard fun-mobiles—they've got serious engines, proper chassis, and safety bits that let you push hard without dying. The main players are 2-stroke racing karts, modified 4-strokes, and those newfangled electric ones. Each has its own vibe, depending on what you're into and how much skill you've got.

What types of go-karts can reach 50 mph?

Honestly, the big three are pretty straightforward. Two-stroke racing karts—the kind you see in competitive leagues—can easily hit 50 mph with a 125cc engine. That's nuts when you think about it, but their power-to-weight ratio is just insane. Then you've got 4-stroke karts, like the ones with souped-up 250cc engines or bigger. They're more about torque and are a bit easier to handle if you're not a pro. And electric? Yeah, they're catching up fast. Instant torque, no noise—kinda weird but cool.

What engine size is needed for a go-kart to go 50 mph?

Depends on what you're working with. For a 2-stroke, a 125cc engine is plenty—they usually pump out 20 to 30 horsepower, which is wild for something that small. Four-stroke karts? You're looking at 250cc to 400cc to get that 15-25 horsepower range. Electric is different—you need a motor with at least 5-10 kW continuous power and a decent battery. But here's the thing: gearing, weight, and aerodynamics matter just as much. You can't just slap on a big engine and call it a day.

Are 50 mph go-karts street legal?

Nope. Not even close. Most places won't let you take these on public roads. They don't have headlights, turn signals, mirrors, or proper seat belts. Plus, they're way faster than what low-speed vehicles are allowed (usually 25-35 mph). These are built for closed circuits—kart tracks, private property, racing events. Sure, some states let you modify them with special permits, but that's rare and a huge hassle. Honestly, just stick to the track.

How much does a 50 mph go-kart cost?

It's all over the place. Used entry-level racing karts? Maybe $2,000 to $4,000, if you're lucky. New ones? $5,000 to $10,000. The high-end competition stuff can hit $15,000 or more. Electric performance karts are typically $6,000 to $12,000. If you're a DIY type, a kit might cost $1,500 to $3,000, but you'll need serious mechanical skills and time. Don't forget the extras—safety gear, maintenance, track fees, and hauling it around.

Data table: Common go-karts that reach 50 mph

Checklist for buying a 50 mph go-kart

• Figure out what you're doing with it: racing, messing around, or building something yourself.
• Check local laws and track rules—speed and safety stuff matters.
• Pick between 2-stroke, 4-stroke, or electric based on how much noise and maintenance you can handle.
• If you're buying used, look for cracks in the frame, engine wear, and brake condition.
• Budget for safety gear: a Snell-rated helmet, suit, gloves, and a neck brace.
• Think about ongoing costs—tires, chains, sprockets, and engine rebuilds add up.
• Try to test drive it if you can, to see how it handles and accelerates.
• Make sure the seat and pedals adjust so you're comfortable.

Frequently asked questions