Road & Race Inc.
1955 Blake Avenue Suite H
Los Angeles, CA 90039
(323) 660-7674
(323) 660-7180
Opening Times
24/7 365 online

Genuine Mahle Product

In Stock Ready to Ship!

Porsche 911 ST Mahle Pistons Cylinders 2.5 86.7mm BORE Looking to add a bit more "punch" to your 1965 to 1973 911S, 911T,911E, 911R or even a 911ST? What we have here today is a NEW set of 2.5 Long Stroke MAHLE pistons & cylinders, these are 86.7mm bore when you couple this with a 2.7 / 2.4 crankshaft, which has a stroke of 70.4 you will have a displacement of 2.5! These will fit 2.0. 2.2 or 2.4 engines 1965 to 1973, please note in order to fit minor machine work is REQUIRED, the case needs to be bored or the barrels need to be shaved.

With the increase of values of the early 911 & the costs of replacement pistons & cylinders this is a ideal upgrade for your 2.4, 2.2, 2.0!

World Famous Porsche Machine Shop Ollies 714 558 7334 estimates the cost of machine work will range from $200-250

the specs are as follows:

10.3-1 Compression Ratio

86.7 bore

Complete Set consists of six pistons, six cylinders, six wristpins, one complete set of rings & circlips,

New Genuine Mahle

Technical Questions? You may contact us @ (323)-660-7674.

We are at your service to answer all of your fitment questions and needs.


Please Note: Every attempt will be made to satisfy your fitment needs. However, the ultimate responsibility is dependent upon you, the buyer. Please be aware that refunds will NOT be issued due to fitment problems. Exchanges will be issued on a case by case basis as long as the exchange part is in stock.  Buyer is responsible for shipping charges incurred.



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Porsche 911 Mahle ST Mahle Pistons Cylinders 2.5 86.7mm BORE

  • Product Code: ST Mahle Pistons Cylinders 2.5 86.7mm BORE
  • Availability: In Stock
  • $4,899.00