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GReddy Supreme SP Cat Back Exhaust

GReddy Supreme SP Cat Back Exhaust

SKU: GRE 10168200

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Features and Specifications

The GReddy Supreme SP Cat Back Exhaust for the Subaru STI hatchback features a large horizontally mounted 3-section muffler with a "tucked-away" layout. This routing allows for the large 3” diameter piping to more smoothly enter the muffler’s center section. Exhaust gases exit each side of the revised muffler via the two 2.5” diameter piping to quad staggered 3.5” GReddy double-wall slash cut tips, The non-tapered 3” mid-pipe also encases a large resonator section to tune-out drone. Like all GReddy Supreme SP systems the fully hand-welded 304 Stainless-Steel exhaust carries a Limited Lifetime Warranty.


Piping: 76 mm (3") - 2x 63.5mm (2.5")

Tip(s): 4x 89mm (3.5 ")

Gasket(s): 3" oval (qty: 2 included) replacement

Resonator: Yes

Notes: Reuse factory doughnut-gasket and hardward for mid-pipe

Weight: 39.8lbs (-2.8lbs)

Sound level: L82 / R83 dB(a) @4000

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