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Features & Product Details
If you are going through the perils of rebuilding the EJ20, you will want to use the right type of piston that can sustain high-performance driving conditions where boost is increased, or where you might be using the vehicle for racing purposes. With that said, Cosworth has developed the 86.5MM 9.2:1 compression ratio piston that has been manufactured through the same careful forging process that is involved with the pistons developed for Formula spec applications. This is a complete piston set that comes with premium rings that have been built to reduce friction and to reduce blow-by. Also included are a set of premium wrist pins, and finally, these pistons have Cosworth's anti-scuff skirt coating with polished tops.
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: Stock Question Darkendays4884712 years agoBeing that these pistons are the stock size and compression ratio, will they work as a stock replacement without a tune? Thanks
0 of 0 people found the following answer helpful
A: Correct, due to these being the OEM bore and Compression Ratio it will not need anything. However, with forged pistons being stronger vs oem a new and improved tune would be be very beneficial.Brady R @ RallySport Direct 2 years ago
- 0 of 0 people found the following answer helpful