Vibrant Performance 1159 StreetPower Oval Muffler 2.5" Same Side T304 Stainless

Vehicle Fitment

• Universal - compatible with any custom exhaust system using 2.50" O.D. exhaust tubing requiring a same-side inlet/outlet oval muffler configuration for naturally aspirated and forced induction applications

Fitment Notes

• Universal fitment - not vehicle-specific; both the inlet and outlet are located on the same end of the muffler (same-side/offset configuration); verify this routing suits your exhaust layout before purchasing
• Slip-fit connections on both inlet and outlet - slides over 2.50" O.D. exhaust tubing; secure with exhaust clamps or weld in place
• 100% reversible - can be installed in either orientation to suit different routing requirements
• For offset inlet/outlet on opposite ends, see alternate StreetPower SKUs in the 11XX and 12XX series
• Sold individually as a single muffler

Features

• True Straight Through perforated stainless steel internal core provides unrestricted exhaust flow and maximum horsepower with no crossflow restrictions
• Premium multi-layer sound absorption materials densely packed around the perforated core produce a low, deep exhaust tone while controlling drone
• 100% T304 stainless steel construction - body, inlet/outlet necks, and tips are all TIG welded for superior weld durability and corrosion resistance
• Mirror polished finish delivers show-quality appearance suitable for both street and competition builds
• Suitable for naturally aspirated and forced induction applications across the full exhaust temperature range

Specifications

• Part Number: 1159
• Product Name: StreetPower Oval Muffler - 2.50" Inlet/Outlet, Same Side
• Body Shape: Oval
• Inlet I.D.: 2.50"
• Outlet I.D.: 2.50"
• Inlet/Outlet Position: Same side (offset/offset)
• Body Height: 5.00"
• Body Width: 9.00"
• Body Length: 15.00"
• Overall Length: 23.00"
• Material: T304 stainless steel
• Finish: Mirror polished
• Internal Core: True Straight Through perforated stainless steel
• UPC: 690092144128
• Warranty: 5-year limited
• Quantity: Sold individually

Included Components

• 1x Vibrant Performance StreetPower Oval Muffler - 2.50" Same Side Inlet/Outlet, Polished T304 Stainless (1159)

Product Description

The Vibrant Performance StreetPower 1159 is a same-side 2.50" oval muffler built from 100% T304 stainless steel and finished to a mirror polish. Both the inlet and outlet are positioned on the same end of the 5" x 9" x 15" oval body, making it particularly suited to exhaust layouts where the pipe needs to enter and exit the muffler from the same direction - common in rear-exit systems with tight tunnel or chassis routing constraints. The True Straight Through perforated internal core keeps exhaust flow unrestricted for maximum power, while the premium multi-layer sound absorption materials packed around the core deliver the low, deep exhaust tone the StreetPower series is known for without the drone common in cheaper straight-pipe setups.

All connections are TIG welded from 100% T304 stainless for long-term corrosion resistance and structural durability, and the muffler is fully reversible to accommodate different installation orientations. Slip-fit connections accept standard 2.50" O.D. exhaust tubing for easy integration into custom or replacement exhaust systems. Backed by Vibrant's 5-year limited warranty.