Explore the Three Best Cost-Effective EV Conversion Kits on the Market

Ever found yourself gazing deeply and lovingly at your trusty old ride, wondering if it’s possible to bring it into the 21st century? The good news is, you don’t have to part ways with your car or leave it gathering dust in your garage. The solution is conversion.

The allure of converting a beloved vehicle to electric power is growing, because the technology required to do it is advancing. It’s getting more attainable and affordable everyday.

It’s 2025, there are new innovations, new kits, and new rules for EV conversion.  Let’s dive into the world of affordable electric vehicle (EV) conversion kits and explore the pricing options that can make your dreams come alive.

Understanding Electric Vehicle Conversion Costs

We have several in-depth articles dedicated to conversion costs on our insights page, and a brand new article here—but we’ll give you a quick rundown below.

The total expense can vary widely, influenced by factors such as your vehicle type, desired performance, and whether you opt for professional installation or a hands-on DIY approach.

Here’s a rough breakdown:

1. Conversion Kit: Typically ranges from $14,000-$26,000+

2. Labor: If you’re not turning the wrenches yourself, professional installation can add $20,000-$45,000+ to the bill.

3. Additional Components: Miscellaneous parts like cooling systems, power steering, and heating can add to the cost.

In total, you’re looking at an investment ranging from $34,000 to over $75,000. But don’t let these numbers deter you; there are ways to make this more affordable—see your state and local government incentives, which can end up taking thousands off your total cost.

Affordable Electric Car Conversion Kits

Finding a conversion kit that’s doable for your budget is the most important thing for a lot of people. Here are some options that balance performance and price:

1. Tesla Swap Package

This kit combines Tesla’s renowned motor and battery technology for the highly recommended (but sold separately) Vero BMS v2. There are efforts being made to bridge together all the best technology on the market right now, and this kit is the perfect example of that effort. It offers power, efficiency, and real-time monitoring. This is a top-tier, affordable choice for many conversions starting at $24,000.00 with unparalleled technical support. And yes—you can even spec it with two motors if you’re trying to turn your vehicle into a screamer.

Key Components:

1. Drive Unit: Choice of Tesla Model S Large Drive Unit (LDU) or Model 3 rear motor. 

2. Controller: EV Controls T2C controller for seamless integration. 

3. Battery Pack: Sixteen 5.3kWh GEN 2 Tesla battery modules, totaling an 85kWh capacity, backed by a six-month warranty. 

4. Additional Essentials: Throttle pedal, brake switch, high-voltage contactors, fuses, pre-charge components, HV cables, and Tesla water pumps.

Upon purchase, a dedicated contact is established, detailing your vehicle specifics and build progress.

2. Revolt Systems Crate Motor Kits (Divorced & Longitudinal Layouts)

If you’re looking for a powerful, modular option with rock solid engineering behind it, Revolt’s crate motor kits are a great fit. These packages are built around the Tesla LDU and designed for easy pairing with classic and performance builds. The kits come in two main configurations: a Divorced Layout and a Longitudinal Layout, with the divorced layout starting at around $49,190 and the longitudinal at $67,990—both designed to offer high performance with robust battery support.

Key Components Include:

1. Tesla LDU

2. Orion BMS2

3. Tesla GEN 2 battery modules

4. Contactors, fuses, HV cabling, and full integration components

These kits provide flexibility based on how your build is laid out—whether you need motor and battery separation (Divorced) or everything housed in-line (Longitudinal). You’ll get a clean design, smart thermal management, and real-world performance.

3. NetGain Hyper 9 Integrated Systems

The NetGain Hyper 9 series is like a greatest-hits collection for EV converters—reliable, efficient, and made affordable for different vehicle sizes and voltages. These kits are ideal for cars under 3,000 lbs and feature the same 120 hp motor across the board. The only difference is battery pack size—that’s based on the weight of the vehicle and room for the battery itself.

These kits are all-in-one systems that include Tesla battery modules, the Orion BMS 2, and a full wire harness setup. They also ship with schematics, manuals, and tech support baked in. Perfect for smaller vehicles or DIY projects that still want a pro-level powertrain.

Here’s a quick breakdown based on weight of the vehicle and room for battery pack:

1. Low-Speed Vehicles – Hyper 9, 21.2 kWh: $13,681

   1. Voltage: 76–100V | Modules: 4 Tesla packs → Ideal for city commuters.

2. Compact Cars – Hyper 9, 26.5 kWh: $15,097

   1. Voltage: 95–125V | Modules: 5 Tesla packs → A solid choice for small sedans or hatchbacks.

3. Smaller Cars – Hyper 9HV, 31.8 kWh: $16,185

   1. Voltage: 114–150V | Modules: 6 Tesla packs → Perfect if your small car needs a little more juice.

4. Mid-Size Cars – Hyper 9HV, 37.1 kWh: $17,274

   1. Voltage: 133–175V | Modules: 7 Tesla packs → Built for mid-size vehicles that need higher capacity and range.

Choosing the Right EV Conversion Kit Suppliers

Not all EV conversion kit suppliers are created equal—and if you’re serious about getting the best bang for your buck, you have to do your homework. Look for suppliers who offer more than just parts—they should provide documentation, schematics, guidance, warranty, and ideally, real-world customer support when you’re elbow-deep in your wiring harness.

All the vendors within our network of over 90 EV conversion professionals offer kits that span multiple vehicle types and configurations—along with documentation, expert input, and peer-reviewed options that help take the questions out of your build.

Whether you’re converting a vintage coupe or building out a small fleet, working with the right supplier can mean the difference between a smooth upgrade and an expensive headache.

Tips to Manage EV Conversion Expenses

Figure Out What You Want: The most important factor of an EV conversion is getting what you want out of the car. Is it meant to be a daily driver? A joyrider? A showstopper? In our experience, reliability is key most of the time—and range usually isn’t an issue.

1. Consider DIY Installation: If you have the skills, or the patience to learn, installing the kit yourself can save on labor costs.

2. Explore Used Components: Sourcing used batteries or motors can significantly reduce expenses, though it’s essential to ensure their quality.

3. Look for Incentives: Some regions offer tax credits or rebates for EV conversions. Research local programs to offset costs.

Converting your vehicle to electric is an investment in both your car’s future and your own dreams. This is a big, satisfying project for many people, and selecting the right conversion kit and being strategic about additional expenses can make the project not only more affordable, but more enjoyable—which is what we all want.

Remember, it’s not just about saving money—it’s about reviving your ride and keeping on using it like it just got a heart transplant.

Whether you’re a weekend warrior with a DIY project or someone seeking a pro job, the road to conversion is more open than ever