SurRon Jackshaft OEM Primary Drive Assembly for Light Bee

The SurRon jackshaft is the original primary drive assembly for the Sur-Ron Light Bee electric dirt bike. It fits both the Sur-Ron Light Bee L1E and the Sur-Ron Light Bee X. This genuine Sur-Ron (OEM) part links the primary drive stage to the secondary 420 chain. The kit arrives with the intermediate shaft assembly, a sprocket and a toothed pulley.

The Light Bee uses a two-stage transmission. Torque from the electric motor first travels through the primary drive. On a stock bike, a toothed belt and pulleys handle that first stage. Power then passes across the jackshaft into the secondary drive and on to the rear wheel. This assembly sits at the centre of that chain. Its accuracy therefore sets the driveline alignment for the whole bike.

Because the unit bolts into the factory mounting points, no extra modification is needed. That makes it suitable for stock machines and for bikes running upgraded power systems. Riders who have converted to a chain primary are covered as well.

Benefits and Advantages

• Factory tolerances – correct dimensions keep the shaft running steadily, without unnecessary vibration.
• Correct driveline – precise alignment reduces wear on bearings and toothed components.
• Direct replacement – it mounts in the original locations, so no additional fitting work is required.
• Two primary drive configurations – the shaft works with a toothed belt or with a chain.
• Sprocket and pulley included – both parts bolt onto the shaft.
• Smoother power delivery – torque transfer is more even and the drive runs quieter.
• Longer component life – proper alignment protects the belt, sprocket and bearings.
• Easier servicing – the pulley or sprocket can be swapped separately, without stripping the whole assembly.

Who Is This Product For?

This assembly is built for Sur-Ron Light Bee electric dirt bikes. It suits both versions of the platform: the Sur-Ron Light Bee L1E and the Sur-Ron Light Bee X. Since it is a primary drive component, it is not intended for the Storm Bee or the Ultra Bee.

The part is needed once the existing intermediate shaft has worn out. Vibration through the drive or uneven belt wear are the usual warning signs. Many riders also fit a fresh unit when rebuilding the transmission after power modifications.

Moreover, the assembly serves two rider groups equally well. Owners running the stock toothed belt can use it as a straight replacement. Riders who have moved to a chain primary drive conversion, in either 219 or 420 pitch, are equally well served. The pulley or sprocket simply bolts on, so you choose the configuration that matches your setup.

What Is in the Package?

• Jackshaft assembly – the primary drive intermediate shaft
• Sprocket – for a chain primary drive
• Toothed pulley – for a belt primary drive

Technical Specifications

Why Choose the SurRon OEM Primary Drive Assembly?

The main advantage of the OEM part is alignment. An inaccurately aligned intermediate shaft accelerates wear on the belt, the sprocket and the bearings. Factory tolerances remove that risk from the start.

Versatility is the second advantage. The same assembly runs in the stock belt system and after a chain drive conversion. As a result, switching drive types does not require a different shaft.

Simplicity of installation comes third. Every mounting point matches the factory layout. Assembly therefore proceeds without drilling or shimming.

Installation Notes

• Inspect the condition of the bearings and spacers, then replace them if needed.
• Follow the torque figures (Nm) and driveline requirements given by the manufacturer.
• Adjust belt or chain tension once the assembly is back together.
• Take a test ride, then check the bolt torque again.

Frequently Asked Questions

Does this jackshaft fit the Sur-Ron Light Bee X?

• Yes, it fits the Sur-Ron Light Bee X.
• It also fits the Sur-Ron Light Bee L1E.

Will it work on a Storm Bee or Ultra Bee?

• No, this is a Light Bee primary drive part.
• It is not intended for the Storm Bee or the Ultra Bee.

Can I run it with a chain primary drive?

• Yes, the included sprocket bolts on for chain use.
• Both 219 and 420 primary chain conversions are covered.

Do I need to modify the frame to fit it?

• No, it mounts in the original locations.
• Drilling and shim fitting are not required.

Is the pulley included, or sold separately?

• The toothed pulley is included in the kit.
• The sprocket comes with it as well.

When should I replace my intermediate shaft?

• Replace it when the current shaft has worn out.
• Vibration and uneven belt wear are common signs.

Is this a genuine Sur-Ron part?

• Yes, it is an original Sur-Ron (OEM) component.
• It is machined to factory tolerances.

Can I change only the pulley later?

• Yes, the pulley and sprocket are bolted on.
• Either one can be swapped without stripping the assembly.

The jackshaft is the heart of the Light Bee driveline, so its condition affects the belt, the sprocket and the bearings alike. With the sprocket and toothed pulley supplied together, one part covers both belt and chain primary setups on the L1E and the X. Fit it into the factory mounting points, set your belt or chain tension, and the drive runs true.