Best Power Wheels Motor Upgrade Kits
Motor upgrade kits for Power Wheels — RS550 and RS775 replacements that add speed and torque. What to buy, what fits, and what to know before you mod.
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Looking for the best power wheels motor upgrade kits? Our top pick is the RS550 Motor Upgrade Kit for Power Wheels. It leads this guide as 12v power wheels, standard speed upgrade with a 4.4/5 rating. The full comparison and the tradeoffs are below.
Every Power Wheels ships with a motor tuned for the liability department: enough power to entertain a child, not so much that anyone gets hurt, with a speed ceiling designed to keep Fisher-Price out of parental lawsuits. That's a completely sensible engineering decision. It's also the reason the entire Power Wheels motor upgrade community exists.
A motor upgrade replaces the stock drive motor with a faster, higher-torque unit. The result: more speed, better hill-climbing, and performance that holds up in thick grass instead of grinding to a halt. The tradeoff: higher battery draw, more mechanical stress on the gearbox, and a voided warranty.
The Two Common Upgrade Paths
RS550 Motor: The standard upgrade for 12V Power Wheels. The RS550 fits most Fisher-Price gearboxes with minimal modification. Typical result: 20–40% speed increase over stock. Right choice for parents who want a noticeable improvement without going overboard.
RS775 Motor: Significantly more powerful — faster, more torque, and harder on the gearbox. The 775 can stress the stock plastic gearbox enough to crack it under sustained load, so it often requires a metal gearbox replacement too. For serious builds and older kids.
What to Know Before You Buy
Motor upgrades work best on 12V vehicles. Running a 24V battery on a 12V chassis puts heat stress on the stock motor and wiring that a proper motor upgrade handles correctly. You'll also want to check your gearbox: if it's plastic (most stock Power Wheels), a high-RPM motor may chew through it. Metal gearbox replacements cost $20–$40 for popular models.
Quick Comparison
RS550 Motor Upgrade Kit for Power Wheels
Various
12V Power Wheels, standard speed upgrade
- Voltage
- 12V
- Seats
- N/A
- Ages
- N/A
- Price
- $15–$30
RS775 High-Torque Motor Upgrade
Various
Maximum performance build
- Voltage
- 12V–24V
- Seats
- N/A
- Ages
- N/A
- Price
- $20–$40 per motor
Metal Gearbox Replacement for Power Wheels
Various
RS775 builds, high-torque protection
- Voltage
- N/A
- Seats
- N/A
- Ages
- N/A
- Price
- $20–$40 per gearbox
| Product | Best For | Specs | Price | Rating |
|---|---|---|---|---|
RS550 Motor Upgrade Kit for Power Wheels Various | 12V Power Wheels, standard speed upgrade | 12V · N/A seats Ages N/A | $15–$30 | 4.4 |
RS775 High-Torque Motor Upgrade Various | Maximum performance build | 12V–24V · N/A seats Ages N/A | $20–$40 per motor | 4.3 |
Metal Gearbox Replacement for Power Wheels Various | RS775 builds, high-torque protection | N/A · N/A seats Ages N/A | $20–$40 per gearbox | 4.3 |
Prices are approximate and subject to change. Always verify current pricing before purchasing.
Our Picks — In Detail
RS550 Motor Upgrade Kit for Power Wheels
Various
12VSeats
N/AAges
N/APrice
$15–$30
The RS550 is the most popular Power Wheels motor upgrade and the right starting point for most families. It fits the majority of Fisher-Price gearboxes directly, delivers a 20–40% speed increase on 12V, and buying two (one for each rear wheel) costs under $50. About 2 hours of work to install.
Pros
- Fits most Power Wheels gearboxes
- 20–40% speed increase
- Affordable
- No gearbox replacement needed for most models
Cons
- Voids warranty
- Higher battery draw
- Requires mechanical comfort
RS775 High-Torque Motor Upgrade
Various
12V–24VSeats
N/AAges
N/APrice
$20–$40 per motor
The RS775 is the serious upgrade — significantly more torque and speed than the RS550. Pairs best with a metal gearbox replacement. Typically used on 18V or 24V builds. If you're modding for an older kid who wants genuine speed, this is the motor.
Pros
- Maximum speed and torque
- Handles 18V–24V builds
- Strong hill-climbing
Cons
- Requires metal gearbox upgrade
- More complex install
- High battery draw
Metal Gearbox Replacement for Power Wheels
Various
N/ASeats
N/AAges
N/APrice
$20–$40 per gearbox
Essential for any serious motor upgrade build. The stock plastic gearbox on most Power Wheels cracks under sustained high-torque load. Metal replacements solve this and are available for most popular models. If you're doing an RS775 or a 24V battery upgrade, budget for these too.
Pros
- Protects against gearbox failure
- Model-specific fits available
- Affordable
Cons
- Additional cost and install step
- Must verify model compatibility
What to Look For
Voltage (6V / 12V / 24V)
Higher voltage means more power, higher top speed, and better terrain handling. Choose based on your child's age, size, and where they'll ride. 12V is the most popular choice for ages 3–7.
Number of Seats
Single-seat models work for one child; two-seat designs are great for siblings or friends. Two-seaters often put more strain on the motor, so look for adequate power.
Terrain
Most 12V ride-ons handle flat grass and hard surfaces. If you have hills, rough grass, or gravel, look for 24V models with high-traction tires.
Safety Features
Look for seat belts, parental lockout switches, low/high speed settings, and parental remote controls — especially for younger or first-time riders.
Battery & Charging
Check battery life (usually 1–2 hours for 12V) and charge time (8–18 hours). Some premium models offer faster charging or higher-capacity batteries.