Primary Chain Kit 420 Sur-Ron Light Bee

Primary Chain Kit 420 for Sur-Ron Light Bee – Primary Drive Chain Kit (13T/30T)

A stronger and more efficient alternative to a belt. This #420 standard primary chain set replaces the belt and pulleys with a chain and two sprockets, while maintaining the original transmission ratio (13T/30T). Designed for use in sand, mud and intense off-road conditions.

Why choose

• Much stronger than a belt – resistant to sand, dirt, shock and high instantaneous loads.
• More efficient than a belt – lower contact area and coefficient of friction for better power transmission.
• Easier maintenance – change the chain faster, no need to remove the swingarm.
• OEM ratio – 13T/30T combination maintains standard transmission geometry.
• Durable materials – hardened steel for sprockets and high strength #420 chain.

What’s included

• 13T hardened steel motor sprocket.
• 30T reduction (primary) shaft sprocket.
• #420 chain (length according to OEM ratio).

Compatibility

• Motorcycle: sur-Ron Light Bee (L1E/X)
• Gear: primary (instead of belt and pulleys)
• Transmission ratio: 13T/30T – OEM equivalent

Specifications

• Chain standard: #420
• Sprockets: 13T (engine) / 30T (jackshaft/reduction shaft)
• Materials: hardened steel (sprockets), high-strength steel chain
• Installation: bolt-on; no need to remove the swingarm to change the chain
• Maintenance: periodic lubrication and tension check

Installation tips

• Check the sprocket line and chain tension after the first 20-50 km.
• Use a suitable lubricant for #420 chains; avoid aggressive solvents for seals.
• Make sure that the chain guard/cap is not in contact with the chain over the entire travel range.

FAQ

Does this kit change the final transmission?
No – 13T/30T retains the OEM transmission ratio.

Will I need to remove the swingarm?
No, you can replace the chain without removing the swingarm.

Is the #420 chain noisier than a belt?
The chain may be slightly louder, but it has greater durability and performance in muddy conditions.