Wiseco Subaru EJ25 DOHC 4v InvDme -23cc 99.5 Piston Shelf Stock

SKU: WIS6599M995

Pistons

WIS Single Pistons...

Wiseco

Wiseco Subaru EJ25 DOHC 4v InvDme -23cc 99.5 Piston Shelf Stock

SKU: WIS6599M995

Pistons

WIS Single Pistons...

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

Professional Series forged racing pistons from Wiseco are no-expense-spared pistons designed for the serious racers and builders. Packed full of custom-level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco's Professional Series.

Application Summary

Subaru EJ25 2.5L 16V

Part Type

Engine Piston

Data: v4.2 - Upd: 2026-09-30 17:34:31

Features

ArmorGlide Skirt Coating: seizure resistant, friction reduction, and quieter operation
Designed and built to withstand heavy to severe duty performance applications
Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength
Forced pin oiling
Fully machined crown features
Precision ring grooves, anti-detonation groove, and additional ring seal improving features

Specifications

Product Attributes - Brand: Wiseco
Product Attributes - Manufacturer's Part Number: 6599M995
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: Wiseco Sport Compact Pistons
Product Attributes - UPC: 00193564089519
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 3.917 in.
Product Attributes - Bore (mm): 99.500mm
Product Attributes - Piston Style: Dome, with no valve reliefs
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Compression Height (in.): 1.191 in.
Product Attributes - Piston Head Volume (cc): -23.00cc
Product Attributes - Wrist Pin Style: Press-fit or floating
Product Attributes - Wrist Pin Retainers Included: No
Product Attributes - Wrist Pin Included: Yes
Product Attributes - Pin Diameter (in.): 0.905 in.
Product Attributes - Piston Ring Thickness: 1.20mm x 1.50mm x 2.00mm
Product Attributes - File Fit: No
Product Attributes - Gapless: No
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: 8:5 Comp. Ratio

Reference Information

Brand Name/s	Wiseco
StreetFX SKU	wis6599M995
SFX Item ID	4063007
Supplier Item Code	4063007
Manufacturer SKU	6599M995
Manufacturer UPC	193564089519
Alternative References	EJ25, -23cc