KTM EXC Spark Plug
The KTM EXC (300cc) takes an NGK BR7ES spark plug, gapped to 0.024".
Key takeaways
- Spark plug: NGK BR7ES.
- Iridium upgrade: NGK BR8ECMIX.
- Gap: 0.024 inch - set it before fitting.
- Covers 1977-2005 (plug changed across years - see table).
Buy the plugs for your KTM EXC
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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KTM EXC spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 1998-2005 | BR7ES | BR8ECMIX | 0.024" |
| 1996 | BR8ECM | BR8EIX | 0.024" |
| 1990 | - | BR9EIX | 0.024" |
| 1984 | BR9ES | BR9EIX | 0.024" |
| 1980 | LKAR8A-9 | BR9EIX | 0.024" |
| 1980 | BR8ECM | BR8HIX | 0.024" |
| 1977 | BR9HS | BR9HIX | 0.024" |
Frequently asked
What spark plug does a KTM EXC take?
The KTM EXC takes an NGK BR7ES spark plug, gapped to 0.024 inch. The iridium upgrade is the BR8ECMIX. See the by-year table for earlier models.
What is the spark plug gap for a KTM EXC?
The spark plug gap for the KTM EXC is 0.024 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 KTM EXC?
Yes. The BR8ECMIX is the iridium version of the BR7ES - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your KTM EXC
We cover the other consumables for your machine too - the exact fit, cited, in one place.