GReddy Supreme SP Exhaust – Subaru STI Sedan (GV8) ENGINE

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The Supreme SP for the Subaru STI Sedan features much larger diameter piping, resonators and mufflers, but also smooths the layout for maximum performance with good sound suppression. This cat-back exhaust starts out with a full 3” mid-pipe with a large straight-through resonator to tune out drone. The next section smoothly transitions into dual 2.5” diameter piping. Improved dual GReddy straight-through mufflers with dual, double wall tips on each muffler finish off the exhaust. GReddy designers carefully position the dual mufflers and staged tips to flow with the GV-chassis’ bodylines. Like all GReddy Supreme SP systems the fully hand-welded 304 Stainless-Steel exhaust carries a Limited Lifetime Warranty.

Make: Subaru
Model (GV8) WRX STI sedan
Years: 2011-14

 

Vehicle(s): WRX & STI Sedan
Chassis:  GV8
Engine:  EJ257
Type:  cat-back, dual muffler system

Number of pieces:  4
Piping:   76 mm (3″) – 2x 63.5mm (2.5″)
Tip(s):  4x 89 mm (3.5″)
Gasket(s):  2x 2.5″ & 1x 3″ oval (qty: 3 included) replacement(s)
Resonator:   Yes

Weight: TBA  lbs  
Sound level:  L89 & R91 dB(a) @4000

Notes: reuse factory doughnut-gasket and hardware for mid-pipe

Dyno Chart
HP:  +14 hp
TRQ:  +22 ft-lbs

*Data collected on stock vehicle    *Retains catalytic convertor, front pipe    
*TBA = To Be Announced

 

Sound Clip