Chain, 420 86L – ETM RTR Sport OEM Drive Chain

Keep your electric dirt bike running smoothly with the Electro & Company ETM RTR Sport 420 86L Replacement Chain. Designed for compatible E&C electric dirt bikes, this OEM drivetrain chain delivers dependable power transfer, consistent performance, and reliable operation for everyday riding and off-road adventures.

Whether you’re replacing a worn, stretched, or damaged chain, the E&C 420 86-Link Drive Chain is designed to match the factory chain specifications for compatible ETM RTR Sport models equipped with a 420 chain drivetrain.

Key Features

• Genuine Electro & Company OEM Replacement Part
• 420 Chain Size – Designed for compatible 420 drivetrain systems
• 86-Link Length (86L) – Factory-specified chain length for the ETM RTR Sport standard setup
• Reliable Power Transfer – Helps maintain smooth power delivery from the motor to the rear wheel
• Durable Construction – Designed for electric dirt bike drivetrain applications
• Direct Replacement – Replaces the original chain on compatible configurations
• OEM Part Number: 730-1058

Vehicle Compatibility

Compatible with:

• Electro & Company ETM RTR Sport – standard 420 drivetrain with 12-inch rear wheel
• Compatible ETM RTR XL / Alpha motor configurations using a 420 drivetrain, where an 86-link chain is required

Important: This chain is intended only for compatible RTR Sport, RTR XL, and Alpha motor setups using a 420 chain. Other wheel sizes or sprocket combinations may require a different chain length.

Technical Specifications

When Should You Replace Your Chain?

A properly maintained drive chain is essential for smooth acceleration, efficient power transfer, and reliable electric dirt bike performance.

Replace your chain if you notice:

• Excessive chain stretching or slack
• Worn, stiff, or damaged links
• Unusual drivetrain noise
• Inconsistent chain tension
• Rust, corrosion, or visible damage
• Excessive wear on the chain and sprockets

For best results, inspect the front and rear sprockets when replacing the chain. Worn sprockets can accelerate wear on a new chain.

Important Fitment Information

This 86-link chain is not compatible with every ETM RTR model.

The 2025 ETM RTR and ETM RTR Lite originally use a different #35 chain configuration, while certain RTR Sport models with 14-inch rear wheels require a longer 92-link 420 chain.

Always verify your existing chain size, link count, sprockets, and wheel configuration before ordering.

Restore reliable drivetrain performance with the genuine Electro & Company ETM RTR Sport 420 86L Replacement Chain.