1999-2003 STARTER RELAY SOLENOID FOR HONDA Sportrax 300 400 TRX300EX TRX400EX

Starter Relay Solenoid for Honda Sportrax 300 400 TRX300EX TRX400EX

This starter relay solenoid is a replacement electrical component that switches high current to the starter motor on Honda Sportrax 300 and 400 ATVs, including TRX300EX and TRX400EX models from 1999 through 2003.

Overview

This starter relay solenoid for Honda ATVs restores reliable electric starting when the original relay no longer closes correctly. It suits owners of 1999 to 2003 Sportrax 300 and 400 machines, including TRX300EX and TRX400EX models, who want a straightforward replacement. The sealed unit mounts in the factory location and plugs into the stock wiring.

Built For Performance

• Heavy-duty internal contacts rated for ATV starter current
• Sealed body keeps out mud, water, and trail debris
• Factory-style blade terminals for a direct harness connection
• Stable switching performance across repeated start cycles
• Compact footprint matches the stock mounting point

Fits These Machines

• for Honda Sportrax 300
• for Honda Sportrax 400
• for Honda TRX300EX
• for Honda TRX400EX

On-The-Job Use

• Trail and dune riding
• Utility work around the property
• Starting in cold or damp conditions
• Starter system troubleshooting and repair

Specs At A Glance

Good To Know

Q: What causes a starter relay solenoid to fail? A: Heat, moisture, and repeated high-current cycles gradually pit the internal contacts until the relay stops passing current to the starter. A failed relay often produces a click with no crank.

Q: Can I install this relay myself? A: Yes, it is a bolt-in replacement that connects to the existing wiring and mounts in the stock location. Disconnect the battery negative cable first and label the leads before removal.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.