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Improved ignition performance, durability and anticarbon build-up. The Ultimate sparkspark plug for increasing performance of tuned or stock engines.

HKS Plug ignites faster and efficient for the best fuel efficiency and the best performance in all situation and environment. It’s very important to provide safe and stable ignition for engine to perform at a maximum power.
HKS Super Fire Racing plug is the best plug item for extreme racing driving and also works fine for the normal tuning engine.

HKSRACING

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.

SUPER FIRE RACING SUPER FIRE RACING M SERIES

Ignition, durability, insulation, all reinforced.

HKS designed a perfect spark plug for all types of engine.

LAクラッチ シングルプレート
M SERIES JIS Type
M-i SERIES JIS Type
M-iL SERIES LONG REACH Type
RE SERIES Rotary Type
M-G SERIES 4G63/L Type/FJ Type/2T-G/
3T-G or Long Type
M-X SERIES For Small/Compact Car
M-XL SERIES LONG REACH Type of M-X Series
M-HL SERIES Screw is the same size of the M-XL Series
and Plug Wrench Size of 14mm
M-LF SERIES Mazda Conical Seat Type