Manley Platinum Series Forged Piston - STD Size - 99.50mm Grade A - 04+ Subaru WRX STi

Regular price $180.00 USD $153.61 USD

Ready To Ship! Special Order! Ships in 10+ weeks

Hurry! Only 3 left in stock.

Part # man612000CA-1

The Manley Performance Platinum Series Lightweight Pistons are strong, lightweight but robust enough to ensure long lasting service life. They utilize offset wrist pins to create a quieter start up! These provide a Drop-In installation!

Recommended clearance of .003" for mildly boosted and .0035" for highly boosted vehicles measured .850" (79/83mm Strokes) and 1.100" (75mm Stroke) from the bottom of the oil ring groove.

This piston features a skirt diameter that corresponds to the OEM Grade A bore. Check the bore grades on the top of your block and order the appropriate quantities of Grade A or B pistons. 


  • Subarus with EJ25 Motor


Made from 2618 High Strength Material for superior weight to strength ratio
Offset wrist pins designed for quieter start-ups
All Pistons come with moly coated skirts
"Total Seal" Round Wire Locks, Chrome Moly Wrist Pins & Premium Steel Top Ring Sets Included
Sold Individually (Add the appropriate amount of quantity)

Extended Information

Type: Forged Pistons (Dish)
Material: High Strength 2618
Compression Ratio: 8.5:1
Item Weight: 395 [grams]
Bore Diameter: 99.50 [mm]
Size: Standard (STD)
Stroke: 79 [mm] 
Rod: Standard Size 5.137[inches]
Compression Height: 30.7 [mm] / 1.209 [inches]
Head cc's: 51
Dome Volume: -22 cc
Bore Oversize: Grade A
Engine Code: EJ25
Notes: Pins and Rings Included

Customer Reviews

Customer Reviews

No reviews yet

Customer Questions


In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

All international orders outside of the USA are subject to duties and taxes per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.