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CP Pistons - S14 Forged Piston Kit (2.5 Liter crank)

749.95 699.95

Purchase CP Pistons - S14 Forged Piston Kit (2.5 Liter crank)

CP Pistons - S14 Forged Piston Kit (2.5 Liter crank) CP has taken BMW Forged Pistons to a new level... after installing pistons from every major manufacturer for many applications, all we can say is "Wow"!
At VAC, we feel that these are flat out the best for your High Performance or Race Engine, and our regular customers agree.

Working closely with CP, these pistons meet our most stringent expectations and are the finest available anywhere. To supply the BMW community, we keep in-stock a variety of the popular compression ratios and bore sizes.
Need any custom compression ratio, bore size, or specification? Not a problem, CP offers quick and reliable turn around.

Our S14 CP pistons are light weight, extremely strong and very precise with consistent specs. They are resilient even at racing RPMs or over 250hp per cylinder! Amazing...
Our CP Piston tolerances are so accurate, and quality of forgings so excellent that unlike other brands, coatings are typically not needed- even in racing applications! If you would still like to add coatings for peace of mind, you may add CPs skirt and dome coating by clicking above (CP's Low-friction Skirt and high-temp Ceramic Dome treatment, +$60 per piston).


    -Off the shelf, the 11:1 application (ideal for pump gas) is clearanced for up to 292* Schrick camshafts. 13:1 up to 320 Schricks. Remember to always have your engine builder check clearances before final assembly.
    -Default bore size is 95.0mm for 2.5l engines. 2.3 Blocks being bored should select 95mm. Others, like OE 2.5 Evo blocks that need to be overbored should select 95.5mm if seeing high performance or track use.

    • Precision designed specifically for the 2.5 liter crank
    • Exacting compression ratios based on correct calculations and measurements
    • Sold in matched and balanced sets
    • Supplied with ultra high quality ring sets, lightweight pins, and locks
    • Made to the most accurate tolerances we have seen
    • Popular S14 applications are shelf stocked
    • Double forced pin oilers
    • Fully CNC machined in aerospace grade controlled environment
    • Made to accommodate high lift aggressive camshafts
    • Balanced to +/- 1 gram
    • Uses CP's Accumulator Groove design
    • Pick lock grooves for easy removal
    • Forged from high-strength 2618 Alloy

    • Expedite services are available (for additional fees) for the emergency situations. Please call or email to inquire.
  • Expedited production services are available for applications not in stock; 2-3 week ($200) 1-2 week ($300) or 3 Day ($500). Please place a request at the end of your order in the notes section if you would like this service. You won't be charged if your application is in stock.


Keep us in mind; VAC Motorsports is a world renowned S14 specialist and machine shop. We can provide any services required from a street rebuild up to world class competition race engine.

Purchase CP Pistons - S14 Forged Piston Kit (2.5 Liter crank)

  • SKU: CP-FPS-S14-2.5
  • Compresion: 13:1 (Race Fuel only); 11:1 (Pump Gas); Custom CR (fill in below)
  • Bore size: 95mm (default BMW 2.5L); 95.25mm (recommended for street use only); 95.5mm (recommended max overbore); 94.4mm
  • Engine Type: S14 (2.5 crank)

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