MOTO1988 Ignition Kit for Honda FourTrax 300 TRX300 (1989–1993) - CDI, Coil & Spark Plug, OEM Fit

MOTO1988 ignition kit replaces the CDI box, ignition coil, and spark plug for Honda FourTrax 300 TRX300 (1989–1993) to restore reliable spark and simplify installation.

If your FourTrax 300 is suffering from weak or inconsistent spark, this MOTO1988 OEM-compatible kit includes the CDI module (30410-HC4-770), ignition coil (30510-HC4-000), and a replacement spark plug to get your TRX300 running closer to factory performance. Each component is quality-tested, designed for direct fit on specified 2x4 and 4x4 models, and shipped as a ready-to-install package so you avoid diagnosing and sourcing parts separately.

How will this kit affect starting and idle stability?

Replacing a worn CDI and coil often restores stronger, crisper sparks that help cold and hot starts as well as steadier idling. Users usually notice fewer misfires and a smoother throttle response after installation.

• New CDI timing restores proper ignition advance.
• Fresh coil reduces voltage leakage and weak sparks.
• Included spark plug ensures correct gap and plug condition.

Is this a direct fit for my Honda FourTrax 300?

Yes — the kit is made to match OEM part numbers 30410-HC4-770 (CDI) and 30510-HC4-000 (coil) for the listed model years. It fits 1989–1993 FourTrax 300 TRX300 2x4 and 1990–1993 FourTrax 300 TRX300FW 4x4 models without modification when the bike uses the same factory connectors and mounting points.

• Compatible models: FourTrax 300 TRX300 2x4 (1989–1993).
• Compatible models: FourTrax 300 TRX300FW 4x4 (1990–1993).
• OEM references included to help confirm fit before purchase.

What comes in the box and what should I expect during installation?

The package contains one ignition coil, one spark plug, and one CDI unit — everything needed for the ignition side of the system. Basic hand tools are usually enough; installation involves removing the old modules, matching connectors, mounting the new parts, and checking plug gap and connections for a secure fit.

• Package contents: 1x Ignition Coil, 1x Spark Plug, 1x CDI.
• Installation: plug-and-play connectors for direct replacement.
• Tools: common hand tools and a torque/plug gap tool recommended.

How reliable and safe are these replacement parts?

MOTO1988 tests components for electrical continuity and basic durability before shipping to reduce early failure risk. The coil housing and CDI are made from durable materials to resist vibration and typical field conditions, though proper wiring and mounting remain crucial for long life.

• Quality control: electrical testing prior to shipment.
• Materials: durable coil housing and protective CDI casing.
• Support: after-sales help available by email for installation or compatibility questions.

Who is this for: This kit is aimed at owners and mechanics of older Honda FourTrax 300 TRX300 ATVs (1989–1993) who need a straightforward, OEM-referenced replacement for intermittent ignition problems, no-start conditions, or as part of a routine ignition refresh. It’s suitable for do-it-yourself ATV maintainers, restoration projects, and small repair shops that value a ready-to-install, tested ignition solution with clear model compatibility.