KTM MXC Spark Plug
GarageDex's powersports data shows the KTM MXC uses a DCPR8E spark plug, gapped to 0.036", or upgrade to the LKAR8AI-9 iridium plug. Spark plug fitment varies by year - see the table for each range.
Spark plug fitment by year
| Years | Standard plug | Iridium upgrade | Gap |
|---|---|---|---|
| 2009-2010 | DCPR8E | LKAR8AI-9 | 0.036" |
| 2006-2010 | - | BR7EIX | 0.028" |
| 1993 | BR9HS | DR8EIX | 0.035" |
| 1991-1992 | - | BR9EIX | 0.024" |
| 1990 | BR8EG | BR9EIX | 0.024" |
| 1984-1990 | - | BR9EIX | 0.024" |
300cc motorcycle. Match the exact part code, thread reach, and heat range. The iridium column is the same-fit upgrade for a longer service life.
Spark plugs for your KTM MXC
The recommended plug is a DCPR8E. Match that code - spark plugs are thread-, reach-, and heat-range-specific, so the part number matters more than the brand. Worth considering: the LKAR8AI-9 iridium upgrade - it fits the same port, fires cleaner, and lasts far longer between changes.
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Frequently asked
What spark plug does a KTM MXC take?
GarageDex's powersports data shows the KTM MXC uses a DCPR8E spark plug, gapped to 0.036", or upgrade to the LKAR8AI-9 iridium plug. Spark plug fitment varies by year - see the table for each range.
What is the spark plug gap on a KTM MXC?
The KTM MXC spark plug gap is 0.036". Set the gap with a feeler gauge before install - iridium plugs come pre-gapped but always verify, since a wrong gap causes misfires and hard starts.
Are iridium spark plugs worth it on a KTM MXC?
The LKAR8AI-9 is the iridium upgrade for the standard DCPR8E. It fits the same port and heat range, fires more reliably, and lasts far longer between changes - a worthwhile swap for most riders, though the standard plug is perfectly fine if you change plugs on schedule.
Does the KTM MXC spark plug change by year?
Yes - the fitment differs across the years we cover: 2009-2010 uses DCPR8E; 2006-2010 uses BR7EIX; 1993 uses BR9HS; 1991-1992 uses BR9EIX; 1990 uses BR8EG; 1984-1990 uses BR9EIX. Match your exact year in the table.
How often should I change the spark plugs on a motorcycle?
Standard plugs typically want replacing every 8,000-12,000 miles (or per your service manual); iridium plugs go much longer. Fouled or worn plugs cause hard starts, misfires, and poor fuel economy - a cheap part that punches above its weight.