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●HKS SUPER FIRE RACING (M SERIES)

Spark Plug Type Thread Size Wrench Size Heat Range Product Code No. Manual Detail Remarks
X Type φ12×19mm 16mm NGK #9 SUPER FIRE RACING M45X 50003-M45X * Discontinued.
RX-8 φ14×21mm 20.8mm NGK #9 SUPER FIRE RACING M45REL 50003-M45REL * Discontinued.
RX-8 φ14×21mm 20.8mm NGK #11 SUPER FIRE RACING M55REL 50003-M55REL * Discontinued.
RE Type φ14×21.5mm 20.8mm NGK #11 SUPER FIRE RACING M55RE 50003-M55RE * Discontinued.
RE Type (RX-8) φ14×21.5mm 20.8mm NGK #11 SUPER FIRE RACING M55RET 50003-M55RET * Discontinued.