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Manley Pistons for EJ257 06-14 Subaru WRX and 04+ STi

Manley

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More info below

Click on the part number in the table to choose a piston set.

Manley pistons for the EJ257 Subaru 2006-2014 WRX and 2004+ STi. To make it easy, we have them all organized in the table. Simply click on the part number you want and it will take you to your piston set. Some pistons are sold as a set of 4 and some are sold individually. Part numbers with a (-4) are the full set of four and (-1) is a single piston. Please review all information carefully. Some pistons are meant for the B25 head and have a different cylinder head cc.

Vehicle Fitment:
Subaru EJ257
2006-2014 WRX
2004-2020 STi

 

(* Set of 4 Pistons *)
Manley Platinum Series Pistons for EJ257 WRX & STi
75mm De-Stroked (2.35L)
Compression Ratio: 8.5:1

Comp Distance = 1.285"
Dome Volume = -18 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
621000C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 429 46995DT‑4
621002C‑4 Standard .180" 99.75 (+.25mm) 5.137" 434 46997DT‑4
621005C‑4 Standard .180" 100mm (+.5mm) 5.137" 438 461000DT‑4
 
 

(* Set of 4 Pistons *)
Manley Platinum Series Pistons for EJ257 WRX & STi
75mm De-Stroked (2.35L)
Compression Ratio: 9.8:1

Comp Distance = 1.285"
Dome Volume = -6 cc
Cylinder Head = 51cc
Piston Type = Flat Top
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
621100C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 462 46995DT‑4
621102C‑4 Standard .180" 99.75 (+.25mm) 5.137" 465 46997DT‑4
621105C‑4 Standard .180" 100mm (+.5mm) 5.137" 469 461000DT‑4
 
 

(* Single Piston Grade A or B *)
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 8.5:1

Comp Distance = 1.209"
Dome Volume = -22 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
612000CA‑1 Standard .180" 99.5 (Grade A) 5.137" 395 46995DT‑1
612000CB‑1 Standard .180" 99.5 (Grade B) 5.137" 395 46995DT‑1
These pistons feature skirt diameters that correspond to the OEM Grade A or B bores resulting in a piston to wall clearance range of .0023” - .0031”. Check the bore grades on the top of your block and order the appropriate quantities of Grade A or B pistons. (Sold as -1 individual pieces, not sets.)
 
 

(* Single Piston Grade A or B *)
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 8.5:1

Comp Distance = 1.209"
Dome Volume = -17 cc
Cylinder Head = 57cc **B25 Head**
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
612200CA‑1 Standard .180" 99.5 (Grade A) 5.137" 411 46995DT‑1
612200CB‑1 Standard .180" 99.5 (Grade B) 5.137" 411 46995DT‑1
These pistons feature skirt diameters that correspond to the OEM Grade A or B bores resulting in a piston to wall clearance range of .0023” - .0031”. Check the bore grades on the top of your block and order the appropriate quantities of Grade A or B pistons. (Sold as -1 individual pieces, not sets.)
 
 

(* Set of 4 Pistons *)
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 8.5:1

Comp Distance = 1.209"
Dome Volume = -22 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
612000C‑4 Standard .180" 99.5mm (Standard Bore) 5.137" 395 46995DT‑4
612001C‑4 Standard .180" 99.55mm (+.05mm) 5.137" 395 46995DT‑4
612002C‑4 Standard .180" 99.75mm (+.25mm) 5.137" 398 46997DT‑4
612005C‑4 Standard .180" 100mm (+.5mm) 5.137" 402 461000DT‑4
612007C‑4 Standard .180" 100.25mm (+.75mm) 5.137" 405 461002DT‑4
 
 

(* Set of 4 Pistons *)
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 8.5:1

Comp Distance = 1.209"
Dome Volume = -17 cc
Cylinder Head = 57cc **B25 Head**
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
612200C‑4 Standard .180" 99.5mm (Standard Bore) 5.137" 411 46995DT‑4
612201C‑4 Standard .180" 99.55mm (+.05mm) 5.137" 412 46995DT‑4
612202C‑4 Standard .180" 99.75mm (+.25mm) 5.137" 414 46997DT‑4
612205C‑4 Standard .180" 100mm (+.5mm) 5.137" 420 461000DT‑4
612207C‑4 Standard .180" 100.25mm (+.75mm) 5.137" 423 461002DT‑4
 
 

(* Set of 4 Pistons *)
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 9.8:1

Comp Distance = 1.209"
Dome Volume = -10 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
612100C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 419 46995DT‑4
612102C‑4 Standard .180" 99.75 (+.25mm) 5.137" 423 46997DT‑4
612105C‑4 Standard .180" 100mm (+.5mm) 5.137" 426 461000DT‑4
 
 

(* Set of 4 Pistons *)
Manley Platinum Series Pistons for EJ257 WRX & STi
83mm Stroker (2.7L)
Compression Ratio: 8.5:1

Comp Distance = 1.130"
Dome Volume = -26 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
622000C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 379 46995DT‑4
622002C‑4 Standard .180" 99.75 (+.25mm) 5.137" 383 46997DT‑4
622005C‑4 Standard .180" 100mm (+.5mm) 5.137" 386 461000DT‑4
 
 

(* Set of 4 Pistons *)
Manley Platinum Series Pistons for EJ257 WRX & STi
83mm Stroker (2.7L)
Compression Ratio: 9.8:1

Comp Distance = 1.130"
Dome Volume = -14 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
622100C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 414 46995DT‑4
622102C‑4 Standard .180" 99.75 (+.25mm) 5.137" 415 46997DT‑4
622105C‑4 Standard .180" 100mm (+.5mm) 5.137" 418 461000DT‑4
 
 

(* Set of 4 Pistons *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
75mm De-Stroked (2.35L)
Compression Ratio: 8.5:1

Comp Distance = 1.285"
Dome Volume = -18 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632000C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 439 46995DT‑4
632000CE‑4 Extreme .250" 99.5 (Standard Bore) 5.137" 439 46995DT‑4
632002C‑4 Standard .180" 99.75 (+.25mm) 5.137" 444 46997DT‑4
632002CE‑4 Extreme .250" 99.75 (+.25mm) 5.137" 444 46997DT‑4
632005C‑4 Standard .180" 100mm (+.5mm) 5.137" 448 461000DT‑4
632005CE‑4 Extreme .250" 100mm (+.5mm) 5.137" 448 461000DT‑4
 
 

(* Set of 4 Pistons *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
75mm De-Stroked (2.35L)
Compression Ratio: 9.8:1

Comp Distance = 1.285"
Dome Volume = -6 cc
Cylinder Head = 51cc
Piston Type = Flat Top
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632100C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 472 46995DT‑4
632100CE‑4 Extreme .250" 99.5 (Standard Bore) 5.137" 472 46995DT‑4
632102C‑4 Standard .180" 99.75 (+.25mm) 5.137" 475 46997DT‑4
632102CE‑4 Extreme .250" 99.75 (+.25mm) 5.137" 475 46997DT‑4
632105C‑4 Standard .180" 100mm (+.5mm) 5.137" 479 461000DT‑4
632105CE‑4 Extreme .250" 100mm (+.5mm) 5.137" 479 461000DT‑4
 
 

(* Single Piston Grade A or B *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 8.5:1

Comp Distance = 1.209"
Dome Volume = -22 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632200CA‑1 Standard .180" 99.5 (Grade A) 5.137" 405 46995DT‑1
632200CEA‑1 Extreme .250" 99.5 (Grade A) 5.137" 405 46995DT‑1
632200CB‑1 Standard .180" 99.5 (Grade B) 5.137" 405 46995DT‑1
632200CEB‑1 Extreme .250" 99.5 (Grade B) 5.137" 405 46995DT‑1
These pistons feature skirt diameters that correspond to the OEM Grade A or B bores resulting in a piston to wall clearance range of .0023” - .0031”. Check the bore grades on the top of your block and order the appropriate quantities of Grade A or B pistons. (Sold as -1 individual pieces, not sets.)
 
 

(* Single Piston Grade A or B *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 8.5:1

Comp Distance = 1.209"
Dome Volume = -17 cc
Cylinder Head = 57cc **B25 Head**
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632800CA‑1 Standard .180" 99.5 (Grade A) 5.137" 417 46995DT‑1
632800CEA‑1 Extreme .250" 99.5 (Grade A) 5.137" 417 46995DT‑1
632800CB‑1 Standard .180" 99.5 (Grade B) 5.137" 417 46995DT‑1
632800CEB‑1 Extreme .250" 99.5 (Grade B) 5.137" 417 46995DT‑1
These pistons feature skirt diameters that correspond to the OEM Grade A or B bores resulting in a piston to wall clearance range of .0023” - .0031”. Check the bore grades on the top of your block and order the appropriate quantities of Grade A or B pistons. (Sold as -1 individual pieces, not sets.)
 
 

(* Set of 4 Pistons *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 8.5:1

Comp Distance = 1.209"
Dome Volume = -22 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632200C‑4 Standard .180" 99.5mm (Standard Bore) 5.137" 405 46995DT‑4
632200CE‑4 Extreme .250" 99.5mm (Standard Bore) 5.137" 405 46995DT‑4
632201C‑4 Standard .180" 99.55mm (+.05mm) 5.137" 405 46995DT‑4
632201CE‑4 Extreme .250" 99.55mm (+.05mm) 5.137" 405 46995DT‑4
632202C‑4 Standard .180" 99.75 (+.25mm) 5.137" 408 46997DT‑4
632202CE‑4 Extreme .250" 99.75 (+.25mm) 5.137" 408 46997DT‑4
632205C‑4 Standard .180" 100mm (+.5mm) 5.137" 412 461000DT‑4
632205CE‑4 Extreme .250" 100mm (+.5mm) 5.137" 412 461000DT‑4
 
 

(* Set of 4 Pistons *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 8.5:1

Comp Distance = 1.209"
Dome Volume = -17 cc
Cylinder Head = 57cc **B25 Head**
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632800C‑4 Standard .180" 99.5mm (Standard Bore) 5.137" 417 46995DT‑4
632800CE‑4 Extreme .250" 99.5mm (Standard Bore) 5.137" 417 46995DT‑4
632801C‑4 Standard .180" 99.55mm (+.05mm) 5.137" 419 46995DT‑4
632801CE‑4 Extreme .250" 99.55mm (+.05mm) 5.137" 419 46995DT‑4
632802C‑4 Standard .180" 99.75mm (+.25mm) 5.137" 421 46997DT‑4
632802CE‑4 Extreme .250" 99.75mm (+.25mm) 5.137" 421 46997DT‑4
632805C‑4 Standard .180" 100mm (+.5mm) 5.137" 423 461000DT‑4
632805CE‑4 Extreme .250" 100mm (+.5mm) 5.137" 423 461000DT‑4
 
 

(* Set of 4 Pistons *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
79mm Standard Stroke (2.5L)
Compression Ratio: 9.8:1

Comp Distance = 1.209"
Dome Volume = -10 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632300C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 429 46995DT‑4
632300CE‑4 Extreme .250" 99.5 (Standard Bore) 5.137" 429 46995DT‑4
632302C‑4 Standard .180" 99.75 (+.25mm) 5.137" 433 46997DT‑4
632302CE‑4 Extreme .250" 99.75 (+.25mm) 5.137" 433 46997DT‑4
632305C‑4 Standard .180" 100mm (+.5mm) 5.137" 436 461000DT‑4
632305CE‑4 Extreme .250" 100mm (+.5mm) 5.137" 436 461000DT‑4
 
 

(* Set of 4 Pistons *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
83mm Stroker (2.7L)
Compression Ratio: 8.5:1

Comp Distance = 1.130"
Dome Volume = -26 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632400C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 389 46995DT‑4
632400CE‑4 Extreme .250" 99.5 (Standard Bore) 5.137" 389 46995DT‑4
632402C‑4 Standard .180" 99.75 (+.25mm) 5.137" 393 46997DT‑4
632402CE‑4 Extreme .250" 99.75 (+.25mm) 5.137" 393 46997DT‑4
632405C‑4 Standard .180" 100mm (+.5mm) 5.137" 396 461000DT‑4
632405CE‑4 Extreme .250" 100mm (+.5mm) 5.137" 396 461000DT‑4
 
 

(* Set of 4 Pistons *)
Turbo Tuff Series
Manley Platinum Series Pistons for EJ257 WRX & STi
83mm Stroker (2.7L)
Compression Ratio: 89.8:1

Comp Distance = 1.130"
Dome Volume = -14 cc
Cylinder Head = 51cc
Piston Type = Dish
Part Number Pin Bore Size
mm
Rod Length
mm
Weight
(Grams)
Included Ring Set
632500C‑4 Standard .180" 99.5 (Standard Bore) 5.137" 424 46995DT‑4
632500CE‑4 Extreme .250" 99.5 (Standard Bore) 5.137" 424 46995DT‑4
632502C‑4 Standard .180" 99.75 (+.25mm) 5.137" 425 46997DT‑4
632502CE‑4 Extreme .250" 99.75 (+.25mm) 5.137" 425 46997DT‑4
632505C‑4 Standard .180" 100mm (+.5mm) 5.137" 428 461000DT‑4
632505CE‑4 Extreme .250" 100mm (+.5mm) 5.137" 428 461000DT‑4


Manley Platinum Series Pistons:
• Moly Coated Skirts
• 2618 high strength material
• Lightweight design with offset wrist pin for quiet start-ups
• Pressure balance groove
• Will accommodate +1mm valve sizes
• Premium Steel top rings with Napier second ring
• Higher tension oil rings for improved oil control
• Round wire locks included
• Recommended piston clearance: .003" for mildly boosted and .0035" for highly boosted
measured .850" (79/83mm stroke) and 1.100" (75mm stroke) from the bottom of the oil ring

Turbo Tuff Benefits:
• Thicker Skirt Wall
• Increased Corner Cross Sections
• Formula Won "Strutted" Forging
• Outboard Pin Bosses
• Offset wrist pin for quiet start-ups

Wrist Pin Options:
Wrist Pin: Size: Material: Pin Part Number:
Standard .180" Wall x 2.500" Premium Chrome Moly 42346
Standard .250" Wall 9310 Alloy 42547
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© All content is property of STM Tuned Inc

We price match!
If you find it cheaper, just give us a call!
(585) 226-8226


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Cancer and Reproductive Harm
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