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Twice Pipes Exhaust (For Stock Exhaust Manifold), 70-72, 74, 240Z-260Z

Twice Pipes Exhaust (For Stock Exhaust Manifold), 70-72, 74, 240Z-260Z
You can choose a Z-Car from your garage, or from the selections above, to filter the store or check part fitment.
Part #:15-6031
Price: $229.87
Twice Pipes were the first successful aftermarket exhaust system for the 240Z. This system features a 2 1/2" inlet that splits into twin pipes measuring a little under 1 3/4" (from the head pipe back) that terminate with two glass-pack mufflers and a pair of 2 1/2" diameter chrome tips. The kit requires no welding, and includes all parts necessary for installation. If you're looking for more power, or doing an original "performance restoration", this is the system you want. If you are not familiar with a "glass-pack" muffler, the performance "staple" of the 70's, they are very free flowing, and as such will significantly increase sound levels. Please keep this in mind when choosing the best system for your Z. Give us a call with any questions.

Image Note:
The system for use with our headers is shown here. This system for "stock exhaust" includes a new headpipe to attach to the stock exhaust manifold.

performance exhaust systems, no matter the manufacturer or type, will be louder than the stock exhaust system. This is an unavoidable consequence of reducing back pressure and therefore increasing performance. This is especially true upon acceleration when exhaust pressures are at their highest. Twice Pipe exhaust systems, utilizing dual glass-pack mufflers, are no exception to this. While not obnoxious or "loud for the sake of being loud", this exhaust kit is noticeably louder than our kits that use a "Turbo" muffler. It will be significantly louder under heavy acceleration, especially when connected to a header as opposed to the stock exhaust manifold, but it still provides a bearable tone and volume during normal operation. Please call us if you have any questions.

Model Note:
This twice-pipe system was designed for Coupes. It can be fitted to a 1974 2+2, but would require extra piping to be purchased at and installed by an experienced muffler shop in order to lengthen the system enough for 2+2 models. This kit DOES NOT fit on 1973 models. The factory exhaust manifold on 1973 models extends lower than the years specified for this kit. If you are interested in running Twice Pipes on your 1973 model, we recommend ordering one of our MSA 3-2 headers and the matching 15-6030 kit instead.

Model Guide:
Datsun 240Z, 260Z

Model Restriction:
For coupe models only. Will not fit on 2+2 models (see Model Note above).

Code Guide:
Datsun S30

Year Guide:
1970, 1971, 1972, 1974

Some parts may not fit every version of every year listed. See product Title & Description for any application breakdowns or customization options, and contact us with any questions.

  • 1970 Datsun 240Z
  • 1971 Datsun 240Z
  • 1972 Datsun 240Z
  • 1974 Datsun 260Z
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