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- USA
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100.5mm) - Size (+1.0mm) - CR (8.2) Set of 4Experience enhanced engine performance with the CP Piston and Ring Set designed specifically for the Subaru EJ257 WRX STi. This set includes four high quality forged pistons, each crafted to a bore size of 100. 5 millimeters with an oversize of 1. 0 millimeter to ensure a perfect fit and increased durability. The pistons feature a compression ratio of 8. 2, optimized for balance between power delivery and engine reliability. Manufactured by CP
Experience enhanced engine performance with the CP Piston and Ring Set designed specifically for the Subaru EJ257 WRX STi. This set includes four high-quality forged pistons, each crafted to a bore size of 100.5 millimeters with an oversize of 1.0 millimeter to ensure a perfect fit and increased durability.The pistons feature a compression ratio of 8.2, optimized for balance between power delivery and engine reliability. Manufactured by CP Pistons, a trusted name in performance engine components, these pistons help improve your vehicle's efficiency and responsiveness on the road or track.
Perfect for enthusiasts and professionals looking to upgrade or rebuild their Subaru EJ257 engines, this set brings aftermarket quality with trusted performance. Whether you're tuning for daily driving or motorsport, these pistons deliver strong, consistent results.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 575 reviews
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Product Reviews
★★★★★ 4
I LOVE IT, BUT THE SIZE DIDNT WORK
Color: Navy, Size: Large
good quality, the pant fit well however the jacket is too big.
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Reviewed in the United States on November 20, 2025
★★★★★ 3
Not as expected.
Color: Black, Size: Large
I don’t usually do reviews but I need to for this. I’m a size medium. And everything I order in medium fits well. Not tight. But well. So I’m at first ordered this set medium size and the pants were ok. Not tight but just. The vest and jacket didn’t fit. Vest was 4 inches from closing and jacket 2 inches from closing. So I went base on the chart description from the images. Nope. So I said ok maybe I should size up. So I returned the medium set and order the large set. Well you guessed it. Still don’t fit. Now the pants were loose and long. The vest was 2 inches from closing and the jacket 1 inch from closing and the sleeves were very long. Of coarse because when you size up, everything sizes up. So no way I was going to get a XL. Not happy with this set. I don’t think the sizes are right. I know every body is different. But for me it didn’t work. I did find a different brand similar to this and I just got it today and wow. Pant. Jacket. Vest for very well just as it should on a medium. So this is why I’m doing a review for this. The quality is good. I would give it a 1 start but I’m not that mean. Anyways just letting you know what to expect. I’m not going to mention the other brand I found here. But just like I did my searching you can too. Bye.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Love it
Color: Burgundy, Size: Medium
Love it fit was great
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Reviewed in the United States on May 16, 2026
★★★★★ 1
Disappointed Customer
Color: Light Grey, Size: Small
It was to large but it was for his prom but we still had to use. Measure did add up to his exact size. Didn’t have time to send it back.
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Reviewed in the United States on April 23, 2026
★★★★★ 5
It was true to size
Color: Pink, Size: Small, Color: Pink, Size: Small
Exactly as it was described, the size was true to size and my husband looked fantastic for the Pink Gala.
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Reviewed in the United States on May 26, 2026