★★★★★ 1
Cheap
Cheaply made
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
Manley 04+ WRX STi (EJ257) Size (STD) Stroke (79mm) Bore (99.50mm Grade B) SINGLE Piston w/ Rings
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Manley 04+ WRX STi (EJ257) Size (STD) Stroke (79mm) Bore (99.50mm Grade B) SINGLE Piston w/ RingsOur signature "Platinum Series" pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. Join the ranks of professional engine builders and tuners who rely on Manley pistons for superior performance and durability.
Quick Dispatch:
Your Manley 04+ WRX STi (EJ257) Size (STD) Stroke (79mm) Bore (99.50mm Grade B) SINGLE Piston w/ Rings orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Manley 04+ WRX STi (EJ257) Size (STD) Stroke (79mm) Bore (99.50mm Grade B) SINGLE Piston w/ Rings ships.
Need Help?
Questions about Manley 04+ WRX STi (EJ257) Size (STD) Stroke (79mm) Bore (99.50mm Grade B) SINGLE Piston w/ Rings, sizing, or delivery? We're just an email away.
Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Manley 04+ WRX STi (EJ257) Size (STD) Stroke (79mm) Bore (99.50mm Grade B) SINGLE Piston w/ Rings in your area.
Get Shipping Estimates
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
You may also like
Manley 04+ Subaru WRX STi (EJ257) STD Stroke 99.55mm +.05mm Bore 8.5:1 Dish Piston/Ring Set - SINGLE
184.98
Manley 04+ Subaru WRX STi (EJ257) STD Stroke 99.55mm +.05mm Bore 8.5:1 Dish Piston and Ring Set
349.62
Manley Subaru EJ257 100.25mm Bore +.75mm Over Size Bore 8.5:1 CR Dish Piston Set with Rings
349.62
Manley 04+ Subaru WRX STi EJ257 99.5mm Bore STD 8.5CR -17cc Dish Piston Set w/Rings
349.62
Manley 04+ Subaru WRX STi (EJ257) STD Stroke 100mm +.5mm Bore 8.5:1 Dish Piston Set with Rings
349.62
Manley 03-06 Evo 8/9 (7 Bolt 4G63T) 85.5mm +0.5mm Over Bore 8.5:1 Dish Piston - Single
184.98
Manley 03-06 Mit Evo 8/9 (7 Bolt 4G63T) 86mm +1mm Over Bore 8.5:1 Dish Extreme Duty Pistons w/ Rings
411.80
4.4 ★★★★★
Based on 775 reviews
Sort
Product Reviews
★★★★★ 5
Great quality and price
Perfect fit. Received quicker than boat shop
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2025
★★★★★ 5
Easy to install if you watch some online how to videos.
The water pump kit worked great on my 35 year old, 2 stroke, 100hp, Mercury Outboard.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2025
★★★★★ 4
Very good shipped and received fast
Missing one bottom gasket. Maybe factor made changes from old style
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 10, 2021
★★★★★ 5
Good impeller kit
Great kit for impeller alpha one gen two outdrive. The only thing that was missing is the instructions as a reference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 14, 2025
