HKS Plugs ignites faster with a predictable strong spark to improve fuel efficiency and achieve the best performance in any conditions and environment. It's very important to provide reliable ignition for an engine to perform at a maximum power. HKS Super Fire Racing Plug is the best plug item for extreme racing conditions, that also will perfectly fit in the stock engine as well.
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Spark Plug Type | Thread Size | Wrench Size | Heat Range | Product | Code No. |
ISO Type | φ14×19mm | 16mm | NGK #7 | SUPER FIRE RACING M35i | 50003-M35i |
Ultimate spark plug "M".
Ignitionability, durability, anti-insulation are all reinforced. HKS has made the best plug for both tuning engines and stock engines.
Rotary engines reciprocating design have a different mechanism and combustion condition. RE-type spark plugs are specially designed to meet the different requirement for rotary engines. The straight shape platinum outer electrode enables reliable ignition performance.
HKS | 25 | 30 | 35 | 40 | 45 | 50 | 52.5 | 55 |
---|---|---|---|---|---|---|---|---|
DENSO社 | 16 | 20 | 22 | 24 | 27 | 31 | 32 | 34 |
NGK社 | 5 | 6 | 7 | 8 | 9 | 10 | 10.5 | 11 |
* Above information is the reference for heat resistance.