Fastest Electric Longboard? The BLACK Carve 4 Hits 100 km/h

Yes, this is real. The ONSRA BLACK Carve 4 Street can be turned into one of the fastest electric longboards you can build: with the right BC4 AT adapters and the biggest 200 mm tires, the BC4 reaches up to 100 km/h. In our latest video, the ONSRA NX remote shows 99 km/h for this setup.

To be clear from the start: out of the box, the BLACK Carve 4 does 62 km/h. The 100 km/h build needs the AT adapter plus 200 mm wheel setup. This post shows you exactly what changes, what the numbers are and how to ride it safely.

Get the BLACK Carve 4 Street

The short version

• Board: BLACK Carve 4 Street, now $1,690 instead of $2,090 in this store.
• Stock top speed: 62 km/h with the 115 mm rubber wheels; 85 km/h with 165 mm tires (official specs).
• Speed build: BC4 AT adapters plus 200 mm pneumatic tires, up to ~100 km/h (99 km/h on the NX remote in the video).
• AT adapters: available now, coming to the online shop soon. Contact ONSRA to order them.
• Where to ride it: only on closed private roads or tracks, with a full-face helmet and full protective gear.

How the BC4 gets to 99 km/h

The board in the video is a BLACK Carve 4 Street with the street gear drive. In the ONSRA NX settings, Fabian shows the gear ratio of 3.2 on the 14S system, and that is the key: the BC4 runs a 14S3P battery with a lot of power, so the small street gear plus a much bigger tire turns straight into top speed.

The steps from the video:

1. Fit the BC4 AT adapters, so the board can take pneumatic all-terrain tires.
2. Mount the 200 mm tires. The tires have a rotation direction (there is a left and a right, marked with an arrow), and Fabian recommends tightening the hub screws by hand at the end, not with a power drill, so you don't damage the thread or the screw head.
3. Set the tire pressure. The tires can take up to 40 psi; in the video they are set to 34 psi.
4. Enter the real wheel size in the NX remote. Measured, the "200 mm" tires came out at about 193 mm, so 193 mm was entered to show the real speed.
5. Read the top speed: the NX remote shows 99 km/h.

Stock vs. speed build

BLACK Carve 4 Street: full specs

All values from the official BLACK Carve 4 Street product page in this store:

Why the BC4 is the right base for the fastest electric skateboard build

• 14S power: the 777 Wh Samsung 50S pack gives the BC4 hard acceleration and the voltage that high speed needs.
• Gear Drive: instant torque, quiet and low maintenance, with an interchangeable gear drive.
• ONSRA NX remote: speed, voltage, temperatures and consumption live on the display, and you set modes, brakes and acceleration your way. If the NX remote signal is lost, the board brakes gently instead of cutting out.
• Swappable setup: the BC4 goes from street to AT and back, so you keep the carving board for everyday rides and build the speed setup when you want it.

For everything else about the board (the Gear Drive, the TKP trucks, Street vs AT and how it compares to earlier generations), read our BLACK Carve 4 guide.

Order the BLACK Carve 4 Street now

Safety: read this before you go fast

At 100 km/h, any mistake is serious. This setup is for experienced riders only.

• Full-face helmet and full protective gear are a must: gloves, armored jacket, knee and elbow protection, long pants and solid shoes.
• Closed private roads or tracks only. Never on public roads. Local speed laws always apply.
• It's a speed setup, not a climbing setup. In the video Fabian says it clearly: it's not meant for heavier riders or for constant full throttle up steep mountains, because the drive can overheat. Ride it straight and fast, not uphill at the limit.
• Check everything before each run: tire pressure, hub screws, trucks, and the battery level.
• Build up speed step by step, and know how to handle a speed wobble before you try it.
• Signal loss: if the NX remote loses its signal, the board brakes gently.

Second video: the BLACK Carve 4 first look

Want to see the stock board first? Here is Fabian's first look at the BLACK Carve 4:

Ready for the fastest BC4?

Start with the board: the BLACK Carve 4 Street for $1,690 instead of $2,090. It's a refined 62 km/h carver out of the box, and the base for the up-to-100 km/h build. For the AT adapters, contact ONSRA: they are available now and coming to the online shop soon.

Buy the BLACK Carve 4 Street

FAQ

Can the BLACK Carve 4 really reach 100 km/h?

Yes. The BLACK Carve 4 Street with the BC4 AT adapters and 200 mm tires reaches up to ~100 km/h. In the video, the NX remote shows 99 km/h for this setup with the measured 193 mm tire size and the 3.2 street gear ratio.

How fast is the BLACK Carve 4 out of the box?

62 km/h with the stock 115 mm rubber wheels. With 165 mm tires it's 85 km/h. 100 km/h needs the AT adapter plus 200 mm wheel setup.

Where can I buy the BC4 AT adapters?

The AT adapters for the BLACK Carve 4 are available now and coming to the online shop soon. Until then, contact ONSRA to order them.

What do I need for the 100 km/h setup?

A BLACK Carve 4 Street, the BC4 AT adapters, 200 mm pneumatic tires and the correct wheel size set in the ONSRA NX remote.

Is it legal to ride 100 km/h on an electric skateboard?

Not on public roads. Ride this setup only on closed private roads or tracks, and always follow your local speed laws.

What protective gear do I need at these speeds?

A full-face helmet and full protective gear: gloves, armored jacket, knee and elbow protection, long pants and solid shoes.

What happens if the remote loses signal?

If the ONSRA NX remote signal is lost, the board brakes gently.

What are the BLACK Carve 4 Street specs?

14S3P Samsung 50S battery (51.8 V, 15 Ah, 777 Wh), custom 170 Kv 6475 motor with interchangeable gear drive, ORION 14S 75 A ESC, 50 km range in ECO, 15.5 kg, IP65 and the ONSRA NX remote.