Replacement Ignition Coil CDI Box For Honda TRX250 TRX300 TRX400EX ATC250SX New

Ignition Coil CDI Box for Honda TRX250 TRX300 TRX400EX ATC250SX

This replacement ignition coil and CDI box combo delivers reliable spark and timing control for Honda ATV and three-wheeler models, cross-referencing common OEM ignition part numbers.

Overview

This ignition coil and CDI box set is a direct replacement for aging or failed factory ignition components on Honda TRX250, TRX300, TRX400EX, and ATC250SX machines. The CDI box governs spark timing while the ignition coil steps up voltage to fire the plug, working together to keep the engine starting and running cleanly. It is built for riders and mechanics who need dependable replacement ignition parts without paying original equipment prices.

Built For Performance

• CDI box controls spark advance for consistent timing across the rev range
• Ignition coil wound to deliver strong, reliable spark voltage
• Sealed housing resists moisture, mud, and vibration
• Plug-and-play connector layout for straightforward installation
• Both components matched as a set for balanced ignition performance

Fits These Machines

• for Honda TRX250
• for Honda TRX300
• for Honda TRX400EX
• for Honda ATC250SX

On-The-Job Use

• Restoring spark on ATVs that will not start or misfire
• Routine ignition maintenance on older Honda machines
• Trail and farm use where ignition reliability matters
• Workshop replacement for worn factory ignition parts

Specs At A Glance

Good To Know

Q: Will this set fit my Honda ATV directly? A: It is designed as a replacement for the listed TRX and ATC models, but connector style and wiring can vary by year, so verify your machine's plug layout before ordering.

Q: Do I need to replace both parts at once? A: Replacing the coil and CDI together is a common practice when ignition faults are hard to isolate, since either component can cause weak or intermittent spark.

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