What go-karts go 50 mph

So you want a go-kart that'll do 50 mph? Yeah, I get it. Most of the basic ones you find online or at the local track barely hit 20-30 mph. Boring, right? But here's the thing — what actually gets you there depends a whole lot on whether you're looking at gas or electric, and if you're buying for a track, your backyard, or some off-road trail. Let's dig into which machines can actually pull it off and what you should watch out for.

Gas-Powered Go-Karts That Hit 50 mph

Gas has been the go-to for speed forever. You're looking at either 4-stroke or 2-stroke engines, and honestly, the size of the engine is everything here.

What engine size do I need for a 50 mph go-kart?

For a regular frame, you're gonna need at least a 200cc to 250cc 4-stroke engine. That's pretty much the bare minimum. If you go bigger — say 300cc to 500cc — you'll blow past 50 mph without breaking a sweat. On the 2-stroke side, a 125cc racing kart can get you there too, but these aren't something you can just ride around the neighborhood. They're track machines, through and through.

Electric Go-Karts That Reach 50 mph

Electric karts are getting seriously fast now. Sure, the rental ones you see at the arcade are capped at like 20-30 mph — safety and all that. But the high-end stuff? It's a different story. The key is motor power (kW) and battery voltage.

Can electric go-karts really go 50 mph?

Absolutely. Look at something like a Blue Shock Race or a custom build with a 72V or 96V system — they'll do it easy. A 5kW motor is roughly the same as a 6.7hp gas engine, but the torque is instant. So acceleration to 50 mph feels crazy fast. Plus they're quieter, less maintenance. Honestly, if you can afford it, electric is tempting.

Rental vs. Racing: A Key Distinction

This is where a lot of people get tripped up. Rental karts — the ones you drive at a park or amusement center — are deliberately slow. Like, 20-30 mph max. They're built for safety, not speed. If you want 50 mph, you're looking at a personal kart. Not a rental. Period.

Checklist: What to Look For in a 50 mph Go-Kart

• Engine or Motor Power: For gas, aim for at least 250cc (4-stroke) or 125cc (2-stroke). For electric, look for a minimum 5kW motor and a 72V battery system.
• Frame and Suspension: A heavier-duty frame (e.g., 1.5-inch or 2-inch tubing) is necessary for stability at high speeds. Look for independent suspension to handle bumps.
• Brakes: Standard mechanical brakes are insufficient. You need hydraulic disc brakes on all four wheels to safely stop from 50 mph.
• Tires: Road tires (slicks or grooved) are needed for pavement. Off-road tires will limit top speed on pavement due to rolling resistance.
• Safety Gear: A DOT-approved helmet, gloves, and a suit (for racing) are non-negotiable at these speeds.

Frequently Asked Questions

Expert Insight: Gearing Is Everything

Everyone obsesses over engine size. But honestly? The gear ratio matters more than almost anything else when you're chasing 50 mph. A 250cc engine can be set up for torque (great acceleration) or speed (higher top end). To hit that 50 mph mark, you'll probably want a taller gear ratio — smaller rear sprocket, larger front sprocket. But here's the trade-off: you lose acceleration. So you gotta find a balance. Otherwise, it's either a rocket off the line or a sloth that eventually hits 50.

Data Table: Popular 50 mph Go-Kart Models