A predator 212 supercharger kit forces more air into your 212cc engine to make more power, and on paper that sounds like the ultimate upgrade. In practice, supercharging a Predator 212 is a niche, expensive, and fiddly path that most builders should think twice about. There is no mass-produced bolt-on kit the way there is for turbos, so you are usually adapting a small blower, custom brackets, and a rebuilt fuel system yourself. This guide explains what a supercharger kit involves, how it compares to a turbo, what it costs, and who it actually makes sense for.
What Is a Predator 212 Supercharger Kit?
A predator 212 supercharger kit is a collection of parts that mounts a belt-driven or gear-driven air compressor to your engine so it pumps pressurized air into the intake. Unlike a turbo, which is spun by exhaust gases, a supercharger is driven mechanically off the crankshaft, so it makes boost the instant the engine turns.
The Predator 212 is Harbor Freight’s 212cc OHV engine, a roughly 6.5 hp clone of the Honda GX200. It was never designed for forced induction, so any supercharger setup is an adaptation rather than a factory-supported system.
Because no major brand sells a plug-and-play blower for the 212, most “kits” are really parts bundles or one-off builds: a small automotive or motorcycle supercharger, a custom drive, a bracket, and the fuel and internal upgrades needed to survive the extra cylinder pressure.
Supercharger Options for a 212
There is no single standard path, but builders tend to reach for one of a few approaches. Each trades cost, complexity, and reliability differently.
Small positive-displacement blower. A tiny Roots or twin-screw unit off a compact engine, adapted with a custom drive. It gives instant, linear boost but is bulky and hard to package on a small frame.
Centrifugal supercharger. Looks like a belt-driven turbo and builds boost as RPM climbs. Easier to mount but its power comes on high in the rev range, which is where a 212 is most fragile.
Electric or hobby blower. Cheap and tempting, but most small electric fans cannot move enough air to make meaningful boost and are best treated with skepticism.
Turbo instead. Honestly, most people chasing boost on a 212 are better served by a turbo. See our Predator 212 turbo kit and the general go kart turbo kit guide before committing to a blower.
Supercharger vs Turbo Compared
Since forced induction on a 212 almost always comes down to supercharger versus turbo, the table below lays out the honest trade-offs.
| Factor | Supercharger | Turbo | Naturally aspirated |
|---|---|---|---|
| Kit availability | Rare, mostly custom | Several bolt-on kits exist | Not applicable |
| Boost delivery | Instant, off the crank | Builds with exhaust flow | None |
| Cost to do right | High | Moderate to high | Lowest |
| Packaging on a kart | Bulky and awkward | Compact | Simplest |
| Reliability risk | High without internal upgrades | High without internal upgrades | Lowest |
The pattern is clear: a turbo is the more supported, better packaged way to add boost to a 212, which is a big part of why superchargers stay niche.
Cost of Supercharging a 212
Because you are assembling a one-off system, costs vary wildly, but it is easy to spend more than the engine is worth.
The blower itself might be $150 to $400 used or surplus. Custom brackets, a drive system, an intake, and plumbing can add another $150 to $400, especially if you pay for fabrication. Then come the supporting upgrades that keep the engine alive under boost.
Forced induction raises cylinder pressure, so you will want a stronger valve spring, a billet connecting rod, a better carburetor or fuel system, and often a flywheel upgrade. Those parts commonly run $150 to $500 on their own. All in, a reliable supercharged 212 can easily pass $700 to $1,200, which is why many builders quietly conclude it is not worth it. You can price small blowers and fuel parts at Amazon to see how quickly it adds up.
How to Choose (and Whether to Bother)
Be honest about your goal. If you simply want a faster kart, a well-chosen exhaust, carburetor, and cam will get you most of the way for a fraction of the money and hassle; start with the best Predator 212 upgrades.
If your goal is boost specifically, a turbo is the more sensible first stop for the reasons in the table above. A supercharger only really earns its place if you value instant, lag-free power delivery and enjoy fabrication for its own sake.
If you still want to build one, plan the supporting internals first, not last. A stronger valve spring, billet rod, and upgraded fuel delivery are not optional on a boosted 212; skipping them is how engines grenade. Treat the blower as the reward at the end of a proper build, not the starting point.
Fuel is the detail that trips up most first-timers. Forcing more air in means the engine needs proportionally more fuel, and the small stock carburetor was never sized for that. Plan on a larger carburetor or a carefully jetted setup, and expect to spend real time tuning the air-fuel mixture, because a lean condition under boost overheats the engine fast. Our go kart carburetor kit guide covers the fueling side in more depth.
Pros and Cons
Pros
- Instant, lag-free boost the moment the engine turns
- Big power potential from a tiny engine
- A genuinely unique, head-turning build
- Linear, predictable power delivery once dialed in
Cons
- No real bolt-on kits, so it is largely custom fabrication
- Expensive once you add the required internal and fuel upgrades
- Bulky and hard to package on a small kart frame
- High failure risk if you skip the stronger valve spring and rod
Frequently Asked Questions
Is there a bolt-on supercharger kit for the Predator 212?
Is a supercharger or a turbo better for a 212?
Do I need internal upgrades to run a supercharger?
How much power can a supercharged 212 make?
Is supercharging a 212 worth it?
Will a supercharger fit on my kart?
Final Thoughts
A predator 212 supercharger kit is one of those upgrades that is more fun to talk about than to live with. There is no true bolt-on solution, the supporting parts add up fast, and a turbo does the same job with more support and less fabrication. If you love the idea of instant mechanical boost and treat the project as the reward, go in with your eyes open and build the internals first. If you just want a faster, reliable kart, spend the money on proven upgrades instead and read our Predator go kart engine guide before you cut a single bracket.