GReddy Supreme - SP Exhaust Subaru STI (Sedan) 2011-14

 The legacy of the GReddy SP lives on with GReddy’s best version yet, the Supreme SP and to prove it carries a limited lifetime warranty! From the 1st flange to the new double-wall GReddy Tip, each Supreme SP system features a high-quality, hand Tig-weld 304 stainless-steel outer construction. Within the muffler, new straight-through and directed- straight-though chambered muffler designs allow GReddy to engineer a more refine exhaust note while increasing exhaust flow and performance. Classic GReddy street performance styling is maintained with excellent fitment and a stylish exhaust system layout. The Supreme SP not only designed to perform and sound great for each specific application; it matches the vehicle’s body-lines and styling.

Car Make: Subaru
Car Model: STI (Sedan)
Car Year: 2011-14
Notes:     

The Supreme SP for the Subaru STI Sedan features much larger diameter piping, resonators and mufflers, but also smoothes 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.

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 hardward 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
Part #: 10168201