Sale

Exhaust Mufflers and Resonators

Flowmaster

80 Series Chambered Muffler 80 Series Crossflow 2.50 Offset In 2.50 Same Side Out Aggressive Sound Flowmaster

$260.95 $231.95 Save $29.00

SKU: F00L 52580

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 52580

This 80 series muffler is a cross-flow design for applications where the muffler is mounted in front of the axle. The inlet is located next to the outlet on the same side of the case.Delivering an aggressive muscle car sound both inside and outside the vehicle, this is an excellent replacement for cars and trucks that want a side exit style system in front of the rear tires, similar to the AAR Cuda exhaust systems. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.Aggressive Sound Exterior Exhaust ToneNoticeable interior resonanceThe original two chamber designCross Flow Applications

Features:

  • Durable Fully Welded 16ga Aluminized Steel
  • Aggressive Sound Exterior Exhaust Tone
  • 3 Year Limited Warranty
  • Noticeable interior resonance
  • Aggressive And Powerful Exterior Exhaust Tone
  • The original two chamber design
  • Notable Interior Resonance
  • Cross Flow Applications
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • The Original Two Chamber Design
  • Premium Flowmaster Quality
  • Cross Flow Applications

80 Series (TM) Cross-Flow Muffler | 2.5 in. Dual Inlet/Outlet | Case Dimensions 5 in. x 10 in. x 17 in. | 20 in. Overall Length | Aluminized Steel

MIA's Description

This Flowmaster 80 Series muffler produces an aggressive muscle car sound for crossflow applications where the muffler is mounted in front of the rear axle, ideal for side exit exhaust setups. It's constructed from 16 gauge aluminized steel, fully MIG welded for durability and corrosion resistance, and finished with a high-temperature black paint. The oval shape and offset inlet/outlet design offer versatile installation. It requires slip-fit clamp-on and weld-on connections (clamps and hangers not included), and some adaptation may be necessary for optimal fit. This muffler is not reversible and is intended for crossflow exhaust setups with side outlet configurations.

Fitment

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Specifications

BrandFlowmaster
Part NumberF00L 52580

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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