Wiseco Piston Set 99.75mm Bore - Subaru EJ25 Turbo Models (inc. 2006-2014 WRX / 2004+ STI)
Manufacturer Part # K598M9975AP
Bundle Savings:MSRP: $641.00
RallySport Direct proudly carries essential engine internals brought to you by Wiseco.
On this page, you are looking at the Wiseco High-Performance Forged Piston Set. This is a great option for those of you who are performing an engine rebuild and need a set of pistons that are designed to sustain the perils of high horsepower and high boost.
Here are the details:
- 99.75mm Bore
- 8.9:1 Compression ratio
- Dedicated 2618 alloy forgings
- Includes Nitrided/Napier steel rings
- Includes offset wrist pins
- Skirt coatings
- Complex dish and dome designs
- Special skirt profiles
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: thermal gap spoohh 5 years agoAnswer
What joint clearance piston cylinder manufacturer recommends its use during the installation of the pistons?
A: We highly recommend discussing this with your engine builder to ensure the proper clearances are used for your specific engine build.
Tanner S. 5 years ago
Q: rebuilding motor 2007 sti 5 years agoAnswer
what is the power rating?
A: Pistons do not have a power rating.
Kirill C. 5 years ago
Q: Blew a ringland JohnM. 5 years agoAnswer
Will these fit on the stock block? Just blew a ringland and looking for a new set
A: Stock bore is going to be 99.5mm. These will work but will require some machine work. Depending on the condition of your engine when it is torn apart it wouldn't be a bad idea to clean things up a bit and get better fitment than stock by going with the 99.75mm piston.
Tanner S. 5 years ago