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Zenki and Kouki

Car culture term

Zenki and Kouki
Photo: Tokumeigakarinoaoshima / Wikimedia Commons · CC BY-SA 4.0

What is Zenki and Kouki?

Japanese terms for the early (zenki) and facelifted (kouki) versions of one car generation, with chuki for the middle version.

Zenki (前期) means "prior period" and kouki (後期) means "later period." JDM fans use the words to tell apart the early and late versions of one car generation, usually split by a facelift. When a generation gets two updates, the version in between is the chuki (中期), which means "middle period."

The Nissan Silvia S14 is the standard example. It debuted in October 1993, and a mild 1996 update added aggressive projector headlights and tinted taillights. The early car is the zenki S14, and the updated one is the kouki S14, which enthusiasts also call the S14A. The 180SX, sold alongside the Silvia, had three versions: the March 1989 original is the zenki, the January 1991 update is the chuki, and the August 1996 facelift is the kouki.

The kouki 180SX got a revised front bumper, new taillights, 15-inch wheels, and a driver-side airbag. It came as the Type X, Type S, and Type R, and the Type S was the first 180SX sold without a turbo. The Type X name is older, though. It first appeared in 1994, when the chuki car's trims were renamed, so a Type X badge alone doesn't make a 180SX a kouki. Production of the 180SX ended in December 1998.

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Frequently asked questions

What does kouki mean?
Kouki (後期) is Japanese for "later period." Car enthusiasts use it for the facelifted, later version of a generation, such as the 1996-on S14 Silvia or the 180SX built from August 1996.
What is the difference between zenki and kouki?
Zenki (前期, "prior period") is the early version of a car generation, and kouki is the later, facelifted one. On the S14 Silvia, the 1996 kouki update added projector headlights and tinted taillights.
What is a chuki?
Chuki (中期) means "middle period." It names the middle version when a generation gets two updates. On the 180SX, the January 1991 to August 1996 car is the chuki, between the 1989 zenki and the 1996 kouki.
Is every 180SX Type X a kouki?
No. The Type X trim first appeared in 1994, during the chuki years, and continued on the kouki 180SX launched in August 1996 alongside the Type S and Type R.
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