Honda TRX300EX Sport Trax 300EX Spark Plug
The Honda TRX300EX Sport Trax 300EX (300cc) takes an NGK BR8ES spark plug, gapped to 0.028".
Key takeaways
- Spark plug: NGK BR8ES.
- Iridium upgrade: NGK DR8EIX.
- Gap: 0.028 inch - set it before fitting.
- Covers 1986.
Buy the plugs for your Honda TRX300EX Sport Trax 300EX
The standard plug is the exact-fit replacement. The iridium version drops into the same spot, lasts longer, and fires a little stronger for a few dollars more. Many engines take more than one - check how many cylinders you have.
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Frequently asked
What spark plug does a Honda TRX300EX Sport Trax 300EX take?
The Honda TRX300EX Sport Trax 300EX takes an NGK BR8ES spark plug, gapped to 0.028 inch. The iridium upgrade is the DR8EIX.
What is the spark plug gap for a Honda TRX300EX Sport Trax 300EX?
The spark plug gap for the Honda TRX300EX Sport Trax 300EX is 0.028 inch. Check and set the gap before fitting a new plug - most powersports plugs need a small adjustment out of the box.
Can I use an iridium plug in a Honda TRX300EX Sport Trax 300EX?
Yes. The DR8EIX is the iridium version of the BR8ES - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Honda TRX300EX Sport Trax 300EX
We cover the other consumables for your machine too - the exact fit, cited, in one place.