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ARIAS
ARIAS Pistons		  

Arias Pistons - Subaru
Includes: std duty pins, pin clips, and rings

Sport Compact Pistons
ARIAS PISTONS has been the leader in compact piston technology since our beginnings. While piston suppliers at that time focused mostly on larger-bore domestic V-8’s, ARIAS had the foresight to cater to the smaller-bore, higher-revving, hotter-running imports & domestic compacts.

Today, ARIAS maintains an unmatched advantage in the import and domestic compact market. Over three decades of research and development have led to the ARIAS Sport Compact shelf line.

  • Hi-tensile forged, not cast, billet material (4032 or 2618).
  • CNC machined working surfaces.
  • Optimized crowns for efficient combustion.
  • Diamond-turned ellipsoidal skirt profile.
  • All Motor / Nitrous pistons feature lightweight, high strength construction.
  • Turbo / Nitrous pistons feature durable, heavy-duty design.
  • Includes: std duty pins, pin clips, and rings
Subaru EJ20 2.0L DOHC (01-03 WRX)
Stock Bore: 3.622, 92mm
Stroke: 2.953
Rod Length: 5.137
Head cc: 45.0
Gasket: .032
Deck: .005
Bore
in/mm		 Comp.
Height		 Dome
CC		 Comp. Ratio
w/Stock Head		 Gram
Wt.		 Part # Price/
Set		 Buy
Now
Dish Top / Turbo / Nitrous              
3.642 / 92.50 1.289 -27 7.3 351 3620200 $549
3.642 / 92.50 1.289 -12.6 8.7 370 3620201 $549
Subaru EJ25 2.5L DOHC (97-98 Impreza)
Stock Bore: 3.917, 99.5mm
Stroke: 3.110
Rod Length: 5.137
Head cc: 48.0
Gasket: .032
Deck: .012
Bore
in/mm		 Comp.
Height		 Dome
CC		 Comp. Ratio
w/Stock Head		 Gram
Wt.		 Part # Price/
Set		 Buy
Now
Inverted Dome Top / Turbo / Nitrous              
3.937 / 100.00 1.190 -15 9.5 419 3620100 $549
new 2024              
Subaru EJ257 2.5L DOHC (WRX STI 2024 and up)
Stock Bore: 3.917, 99.5mm
Stroke: 3.110
Rod Length: 5.137
Head cc: 51.0
Gasket: .050
Deck: ~.012
Bore
in/mm		 Comp.
Height		 Dome
CC		 Comp. Ratio
w/Stock Head		 Gram
Wt.		 Part # Price/
Set		 Buy
Now
Dish Top / Turbo / Nitrous              
3.9175 / 99.50 1.208 -16 8.6   3620300 $549
3.937 / 100.00 1.208 -16 8.7   3620310 $549
Subaru EJ25 2.5L DOHC (99-up Impreza)
Stock Bore: 3.917, 99.5mm
Stroke: 3.110
Rod Length: 5.167
Head cc: 51.0
Gasket: .032
Deck: .012
Bore
in/mm		 Comp.
Height		 Dome
CC		 Comp. Ratio
w/Stock Head		 Gram
Wt.		 Part # Price/
Set		 Buy
Now
Inverted Dome Top / Turbo / Nitrous              
3.917 / 99.50 1.160 -23.3 8.3 374 3620000 $549
 
 
 
 
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