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CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR (Part Number: )
CP Piston Set 92mm Bore 8.5:1 CR
Subaru WRX 2002-2005
Write a Review | 3 Q&As
Part # SC7399
$679.00
msrp: $806.00

Product will ship from manufacturer, average time to ship: 7 business days

Features & Product Details

The piston is the weak link in the stock WRX block. These are great for someone either reassembling their block or someone looking to put in some strong pistons in their "built" block.

Throw these forged high strength aluminum pistons in and turn up the boost and get more power from your WRX! These CP pistons have been put through rigorous testing. In short, they are built to withstand nearly whatever you can throw at em'!

Specifications

Brand: CP
Anti-Friction Coating: No
Bore Size: 92mm
Compression Ratio: 8.5:1
Head Alteration Required: No
Machining Required: No
Material: Forged
Piston Rings Included: Yes
QTY: 4
Wrist Pin Clips: No
Wrist Pins Included: Yes
Mfgr. Warranty: No Warranty
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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QUESTIONS & ANSWERS

  • Q: boost  SLUGGO 19775 years ago

    how much boost could they handle
    • 0 of 0 people found the following answer helpful

      A:  There is no pressure or power rating on pistons. Reason is that they will fail as a result of detonation before cylinder pressures become an issue. And if cylinder pressures are an issue, your cylinder walls will fail first.

      Kirill C. @ RallySport Direct 5 years ago  
        
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  • Q: why   warlord_x695 years ago

    Hi guys why is it that a lot of piston manufacturers make these piston for wrx 02 8.5:1 instead of the stock 8.3:1c/r?? Every piston i find is 8.5:1 or 8.0:1
    • 0 of 0 people found the following answer helpful

      A:  Much of it will come down to the piston dome design and what each manufacture thinks is the ideal design. As to why the change in CR, that really is not a question with a answer and much of that will depend on the manufactures ideology of what is the best suited CR in their minds.

      Kirill C. @ RallySport Direct 5 years ago  
        
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  • Q: Compression Ratio  Drew Anthony6 years ago

    Since these pistons are at a slightly higher compression ration than stock, would this interfere with an Accessport V39 Tune at 91 Octane at all?
    • 0 of 0 people found the following answer helpful

      A:  Yes this would effect the tune and you would want to re-calibrate the tune for it accordingly

      Kirill C. @ RallySport Direct 6 years ago  
        
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