A go kart electric conversion kit turns a tired gas kart into a quiet, instant-torque machine over a weekend or two. Instead of engineering an electric drivetrain from scratch, you buy a matched bundle — motor, controller, throttle, and mounting hardware — and swap it onto the engine plate where the old clone motor sat. Done right, the result often out-accelerates the gas setup it replaces. This guide covers exactly what conversion kits include, how the 1kW, 2kW, and 3kW+ tiers differ, how to size the battery pack you will buy separately, and how the swap changes your kart weight and balance.
Choosing the drive unit is the biggest decision in any conversion — our guide to the best electric motors for go-karts compares brushed, brushless and hub options by power and price.
What a Go Kart Electric Conversion Kit Includes
A conversion kit is the drivetrain, not the whole solution. A typical kit box contains a brushless (BLDC) motor, a matched controller, a hall-effect throttle (twist grip or foot pedal), a wiring harness with connectors, a small sprocket for the motor shaft, and often a mounting plate or bracket set. Better kits add a keyed power switch, a voltmeter or battery gauge, and a main contactor or breaker.
What kits almost never include: batteries, a charger, a battery box, and the heavy-gauge battery cabling. Those are on you, and the battery is usually a bigger spend than the kit itself. Some kits also assume your existing chain pitch (#35 vs #40/41) matches their sprocket — verify this before ordering, because a pitch mismatch means a new axle sprocket too.
Note the distinction from a full scratch build: converting reuses your existing frame, steering, brakes, seat, and axle, which cuts the project down to mounting, gearing, and wiring. If you do not already own a kart, a scratch build may make more sense — our guide to homemade electric go-karts covers that path, and how to build a go-kart covers the chassis itself.
Types of Conversion Kits: Power Tiers
1kW kits (36–48V). Entry tier, ideal for kids karts and light teen karts. Roughly comparable to a small gas engine in usable pace — 15 to 20 mph with sensible gearing — but far smoother. Kits run $150 to $300.
2kW kits (48–60V). The sweet spot for adult yard karts. A 48V 2kW BLDC motor delivers acceleration that embarrasses a stock 212cc clone off the line and cruises an adult at 25 to 35 mph. Expect $250 to $450 for the kit.
3kW+ kits (60–72V). Serious performance for experienced builders. These pull hard to 35 to 45+ mph, demand real battery current (60A to 100A continuous), and deserve hydraulic brakes and a stout chassis. Kits run $400 to $800, and pack costs rise steeply with the current demand.
Hub and mid-drive variants. A few kits use ATV-style differentials or dual motors, but the classic single motor chained to the live axle remains the simplest and most serviceable layout for a converted kart.
Conversion Kit Tiers Compared
| Tier | Voltage | Speed potential | Suggested battery | Kit price |
|---|---|---|---|---|
| 1kW | 36–48V | 15–20 mph | 36–48V, 12–20Ah | $150–$300 |
| 2kW | 48–60V | 25–35 mph | 48V, 20–30Ah | $250–$450 |
| 3kW+ | 60–72V | 35–45+ mph | 60–72V, 25–40Ah, high discharge | $400–$800 |
| Gas 212cc (reference) | — | 25–35 mph | — | $150–$250 engine |
Cost and Considerations
Budget the full conversion, not just the kit. A realistic 48V 2kW project: $250 to $450 for the kit, $250 to $600 for a lithium pack with BMS, $50 to $100 for a charger, and $50 for cabling, a fuse or breaker, and a battery box. Total: roughly $600 to $1,200 on top of the kart you already own. Compare that against replacement gas power and complete karts in how much a go-kart costs.
Battery sizing drives both range and performance. Match voltage to the kit exactly, then choose amp-hours for run time — a 48V 20Ah pack gives a 2kW kart roughly 30 to 45 minutes of hard driving. Just as important is discharge rating: the pack must comfortably supply the controller peak current (often 45A to 80A), so check the continuous discharge spec, not just capacity. LiFePO4 with a proper BMS is the chemistry to default to.
Weight and balance change more than people expect. A 212cc engine with fuel weighs around 40 lb hanging off the rear plate. A 2kW motor weighs 10 to 15 lb, but a lithium pack adds 15 to 25 lb (SLA far more) that you can place anywhere. Mount the pack low and near the middle of the frame and the converted kart will corner flatter than it ever did with gas. Keep the motor sprocket aligned within a couple millimeters of the axle sprocket plane, or chains will jump under electric torque.
How to Choose and Install a Kit
Choose the tier by driver and terrain: 1kW for kids, 2kW for adults on grass and gravel, 3kW+ only if the chassis, brakes, and your experience justify it. Prefer kits with documented controller settings, a wiring diagram in readable English, and connectors already crimped.
Installation follows a reliable order. Strip the gas engine, tank, and throttle cable. Bolt the motor to the plate (slotted mounts make chain tensioning painless). Match gearing — around 4:1 to 5:1 overall is a solid starting point for 2kW on 15-inch tires. Mount the controller in airflow, run the throttle, and connect the battery last through a main fuse and disconnect. Test wheels-off before the first rollout, ideally with the controller current limit turned down.
Quality of donor hardware matters: worn axle bearings and a stretched chain waste electric torque the same way they wasted gas power. Our go-kart parts guide covers the consumables worth refreshing during the swap, and for the broader electric landscape see the complete guide to electric go-karts.
Pros and Cons
Conversions are the fastest route to an electric kart, with a few honest limitations.
Pros
- Reuses your existing chassis, brakes, and steering to cut cost and build time
- Instant torque typically beats the gas engine it replaces off the line
- Quiet operation opens up neighborhoods and evening driving
- Battery placement freedom improves weight balance over a rear-hung engine
Cons
- Batteries and charger often cost more than the kit itself
- Run time of 30 to 60 minutes versus refuel-and-go gasoline
- Cheap kits ship with thin documentation and unlabeled wiring
- Chain pitch and sprocket mismatches with the donor kart are common surprises
Frequently Asked Questions
What size electric conversion kit replaces a 212cc gas engine?
Are batteries included in go-kart conversion kits?
How hard is it to convert a gas go-kart to electric?
How long will a converted electric kart run per charge?
Is a conversion kit better than building electric from scratch?
Do I need to change my gearing after converting?
Final Thoughts
A go kart electric conversion kit is the highest-value route to electric karting for anyone with a gas kart already in the garage: pick the 2kW tier for adults, spend properly on a lithium pack with a BMS, and treat wiring and chain alignment as the craftsmanship parts of the job. Starting without a donor chassis instead? Read our homemade electric go-kart guide for the scratch-build path, and ground the whole decision with the complete electric go-kart guide.