Suzuki GSX-R750 Spark Plug
The Suzuki GSX-R750 (750cc) takes an NGK JR9C spark plug, gapped to 0.028".
Key takeaways
- Spark plug: NGK JR9C.
- Iridium upgrade available in the same fit.
- Gap: 0.028 inch - set it before fitting.
- Covers 1986-2009 (plug changed across years - see table).
Buy the plugs for your Suzuki GSX-R750
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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Suzuki GSX-R750 spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 1994-2009 | JR9C | - | 0.028" |
| 1990-1992 | CR9E | - | 0.028" |
| 1989-1998 | CR9EK | CR9EIX | 0.026" |
| 1988-1989 | CR10EK | CR9EIX | 0.028" |
| 1986-1987 | JR9C | - | 0.028" |
Frequently asked
What spark plug does a Suzuki GSX-R750 take?
The Suzuki GSX-R750 takes an NGK JR9C spark plug, gapped to 0.028 inch. See the by-year table for earlier models.
What is the spark plug gap for a Suzuki GSX-R750?
The spark plug gap for the Suzuki GSX-R750 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 Suzuki GSX-R750?
Yes. The iridium version drops into the same spot - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Suzuki GSX-R750
We cover the other consumables for your machine too - the exact fit, cited, in one place.