Manley Subaru WRX STi (EJ257) 99.5mm Bore STD Size 8.5 CR 83mm Stroke Piston w/Ring *SINGLE ONLY*

Manley Subaru WRX STi (EJ257) 99.5mm Bore STD Size 8.5 CR 83mm Stroke Piston w/Ring SINGLE ONLY

Marsoni

M251S

$184.98

Get it in 3 business days with 1 day shipping. Friday, May 29

Manley Subaru WRX STi (EJ257) 99.5mm Bore STD Size 8.5 CR 83mm Stroke Piston w/Ring *SINGLE ONLY*Our 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. This Part Fits: Year Make Model Submodel 2004 2011 Subaru Impreza WRX STI 2007,2011 Subaru Impreza WRX STI Limited 2010 Subaru Impreza WRX STI Special

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Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.

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Reviewed in the United States on February 26, 2024

Verified Purchase

Carl L. Bradley

Houston, US

★★★★★ 1

Kinda flimsy…

Thought the assembly was metal, it’s some kind of PVC.

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Reviewed in the United States on September 22, 2025

Verified Purchase

Michelle bullard