RFN Warrior Pro SX-E15 | 74V 19/16 Electric Dirt Bike

15kW Performance Built Around an 85cc-Class Platform

The RFN Warrior Pro SX-E15 brings serious electric power into a more compact 19/16 dirt bike platform. Built as an 85cc-class electric dirt bike, the E15 combines a 74V 40Ah Samsung battery, 15kW peak power, 56 mph top speed, and up to 50 miles of claimed range with fully adjustable suspension and moto-style controls.

This is the standard-wheel version of the Warrior Pro E15 platform. While the SX-E15 Plus moves up to a 21-inch front and 18-inch rear setup, the standard SX-E15 runs 19-inch front and 16-inch rear wheels. That gives it a smaller overall package for riders who want the performance of the E15 drivetrain without the additional height of the Plus.

8kW Rated, 15kW Peak Power

The Warrior Pro SX-E15 uses an axial flux electric motor rated at 8kW with up to 15kW peak power. With electric torque available immediately, there is no clutch to manage and no gears to shift through. Roll into the throttle and the power is there.

RFN lists the standard E15 with a 56 mph top speed. More importantly for off-road riding, the bike gives riders multiple ways to manage that performance rather than simply delivering maximum power every time the throttle is opened.

For riders coming from a gas dirt bike, the lack of clutch and shifting changes the experience considerably. You can put more attention into braking, line selection, body position, traction, and corner exits while the electric drivetrain handles power delivery.

74V 40Ah Samsung Battery

Power comes from a removable 74V 40Ah Samsung lithium battery with 2,960Wh, or 2.96kWh, of capacity. The quick-swap battery design is particularly useful for track days and longer riding sessions because a depleted battery can be exchanged for a charged pack rather than parking the bike while it recharges.

RFN lists up to approximately 50 miles of range. As with any high-performance electric dirt bike, that number depends heavily on how and where you ride. Motocross, deep dirt, elevation, aggressive acceleration, higher speeds, rider weight, temperature, and maximum-power riding can all substantially reduce range.

Charging time is approximately 2 to 4 hours.

Five Power Modes and App-Based Tuning

The SX-E15 gives the rider control over how its 15kW drivetrain behaves. Five selectable power modes make it possible to adjust performance for rider ability, terrain, or the type of riding you're doing.

The RFN app adds another layer of adjustment, including control over power delivery and regenerative braking. This is useful on a bike with this much performance because the ideal throttle response for a motocross track may not be what you want when picking your way through tight or slippery single-track.

The SX-E15 also includes a reverse function, a simple feature that can be surprisingly useful when maneuvering an electric dirt bike in tight areas or getting yourself out of an awkward position on the trail.

Fully Adjustable Suspension

The Warrior Pro SX-E15 features dual-adjustable damping suspension front and rear. Rather than being locked into a generic factory setting, riders can tune the suspension around their weight, speed, terrain, and riding style.

That adjustability matters on an 85cc-class platform. A bike used for casual trail riding needs a different setup than the same bike being pushed through braking bumps, jumps, and hard motocross landings. Setting sag correctly and then working with compression and rebound adjustments can make a substantial difference in traction, balance, and overall control.

19/16 Wheel Setup

The standard SX-E15 runs a 19-inch front and 16-inch rear wheel combination. This is the defining fitment difference between the E15 and E15 Plus.

The 19/16 setup keeps the standard E15 more compact and is a natural choice for riders looking at an 85cc or Supermini-style electric platform. Riders wanting taller full-size ergonomics and the rollover characteristics of larger wheels should look at the SX-E15 Plus with its 21/18 setup.

Built for Real Off-Road Riding

The E15 is built around a lightweight, off-road-focused chassis with aerospace-grade 6082 aluminum alloy construction. Hydraulic disc brakes are fitted front and rear, along with a magnetic rear brake tether / kill-switch lanyard.

The combination of a strong chassis, adjustable suspension, hydraulic brakes, and 19/16 wheels is important. Power figures are easy to advertise, but the chassis underneath the rider determines whether that power is actually useful once the trail gets rough or the pace starts increasing.

RFN Warrior Pro SX-E15 Technical Specifications

• Class: 85cc-class electric dirt bike
• Voltage: 74V
• Motor: Axial flux electric motor
• Rated Power: 8kW
• Peak Power: 15kW
• Top Speed: Approximately 56 mph
• Battery: 74V 40Ah Samsung lithium battery
• Battery Capacity: 2,960Wh / 2.96kWh
• Battery Design: Removable quick-swap battery
• Charging Time: Approximately 2 to 4 hours
• Range: Up to approximately 49.7 to 50 miles, conditions dependent
• Weight: Approximately 190 lbs
• Power Modes: Five selectable settings
• App Tuning: Adjustable power delivery and regenerative braking
• Regenerative Braking: Yes
• Reverse: Yes
• Front Suspension: Dual-adjustable damping
• Rear Suspension: Dual-adjustable damping
• Front Brake: Hydraulic disc brake
• Rear Brake: Hydraulic disc brake
• Safety: Magnetic rear brake tether / kill-switch lanyard
• Frame: Aerospace-grade 6082 aluminum alloy
• Front Wheel: 19 inches
• Rear Wheel: 16 inches
• Seat Height: Approximately 35 to 36 inches
• Recommended Rider Height: Approximately 5'3" and taller

Fitment and Rider Sizing

• Recommended Rider Height: Approximately 5'3"+
• Wheel Setup: 19-inch front / 16-inch rear
• Rider Type: Advanced youth, teen, and adult riders who fit the more compact 85cc-style chassis
• Best Use: Motocross, track riding, trails, single-track, and aggressive recreational off-road riding
• Want a Taller Bike? The RFN Warrior Pro SX-E15 Plus uses larger 21-inch front and 18-inch rear wheels for riders wanting a more full-size dirt bike stance.

Why Choose the SX-E15?

The RFN Warrior Pro SX-E15 makes a lot of sense for riders who want serious electric performance but do not necessarily want a full-size 21/18 machine. Its 19/16 wheel setup, 15kW peak motor, 74V Samsung battery, adjustable suspension, hydraulic brakes, and tunable power delivery create a package that can work on a motocross track one day and technical trails the next.

It also offers some meaningful advantages over a traditional gas-powered competition bike. There is no gasoline, engine oil, clutch, shifting, or traditional top-end engine rebuild. Chain, brakes, tires, suspension, bearings, and normal chassis maintenance still matter, but the electric drivetrain removes a lot of the engine-related maintenance normally associated with an off-road race bike.

The ability to tune power delivery is another major advantage. Instead of changing the bike every time the terrain or rider changes, you can adjust how the E15 delivers its performance. That makes the bike easier to manage when needed while still leaving 15kW of peak power available when it's time to turn things up.

Who Is the SX-E15 For?

• 85cc and Supermini-style riders: Riders looking for an electric alternative built around a more compact 19/16 wheel platform.
• Track and trail riders: Riders who want adjustable suspension, tunable power, regenerative braking, and a strong 15kW drivetrain for different terrain.
• Riders who find 21/18 bikes too tall: The standard E15 provides the Warrior Pro drivetrain in a smaller wheel package than the SX-E15 Plus.

Range Note: RFN lists up to approximately 50 miles of range. Actual range can vary significantly with speed, rider weight, terrain, elevation, temperature, tire setup, power mode, and riding style. Aggressive motocross and trail riding should not be expected to achieve maximum advertised range.

Important: The RFN Warrior Pro SX-E15 is a high-performance off-road electric motorcycle. Appropriate riding experience, protective equipment, and use in a suitable off-road environment are strongly recommended.

Pricing Notice: Manufacturer Suggested Retail Price (MSRP) does not include setup, title, licensing, insurance, state or local registration fees, freight charges, accessories, accessory installation, dealer-added options, or other applicable dealer charges.