Collection: Exhaust System Upgrades For Subaru Legacy B4 BM
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Invidia Q300 SS Dual Cat-Back Exhaust | Legacy 2.5GT (10-12) (HS10SL1GT3)
Vendor:InvidiaRegular price $1,258.27 USDRegular priceUnit price / per$1,944.60 USDSale price $1,258.27 USDSale -
Magnaflow Direct-Fit Replacement Exhaust System | Subaru Legacy (10-17) 2.5L (106-0252)
Vendor:MagnaflowRegular price $409.41 USDRegular priceUnit price / per$435.00 USDSale price $409.41 USDSale -
Torque Solution Stock DP to Aftermarket 3" Catback Adapter | Multiple Fitments (TS-SU-479)
Vendor:Torque SolutionRegular price $48.88 USDRegular priceUnit price / per$61.10 USDSale price $48.88 USDSale -

MagnaFlow 2.5L Subaru WRX Catalytic Converter | Subaru Impreza/Forester/Outback (92-21) (24416)
Vendor:MagnaflowRegular price $719.98 USDRegular priceUnit price / per$921.00 USDSale price $719.98 USDSale -
Mishimoto OEM 3in Downpipe to Cat-Back Adapter | Subaru WRX/WRX STI/Legacy (MMEXH-ADAP-SDAE)
Vendor:MishimotoRegular price $64.95 USDRegular priceUnit price / per$71.00 USDSale price $64.95 USDSale -
MagnaFlow Converter Direct Fit 06-11 Subaru Impreza 2.5L
Vendor:MagnaflowRegular price $875.00 USDRegular priceUnit price / per$875.00 USDSale price $875.00 USD -
Magnaflow 52510 DirectFit Converter 11-13 Subaru Forester H4 2.5 OEM Underbody
Vendor:MagnaflowRegular price $477.00 USDRegular priceUnit price / per$477.00 USDSale price $477.00 USD -
MagnaFlow 52726 OEM Grade Catalytic Converter For Subaru Outback/Legacy 10-12
Vendor:MagnaflowRegular price $576.00 USDRegular priceUnit price / per$576.00 USDSale price $576.00 USD -
Invidia 10+ Legacy Catted Downpipe
Vendor:InvidiaRegular price $1,027.27 USDRegular priceUnit price / per$1,587.60 USDSale price $1,027.27 USDSale -
MagnaFlow Conv Direct Fit OEM 16-17 Subaru Impreza/Forester Underbody
Vendor:MagnaflowRegular price $867.51 USDRegular priceUnit price / per$1,110.00 USDSale price $867.51 USDSale -
BLOX Racing Turbo to Downpipe MLS Gasket (BXFL-50013)
Vendor:BLOX RacingRegular price $10.35 USDRegular priceUnit price / per$16.00 USDSale price $10.35 USDSale -
Borla Header | 02-14 WRX / 04-18 STI / 05-12 LGT (17217)
Vendor:BorlaRegular price $936.99 USDRegular priceUnit price / per$1,048.99 USDSale price $936.99 USDSale -

COBB 2" SS Uppipe | Subaru WRX (06-14)/STI (04-21)/Forester XT/Legacy GT/Outback XT (06-09) (512265)
Vendor:COBBRegular price $275.00 USDRegular priceUnit price / per$275.00 USDSale price $275.00 USD -
Fel-Pro Exhaust Flange Gasket | Subaru WRX/BRZ, Toyota 86 (04-23) (60992)
Vendor:Fel-ProRegular price $6.07 USDRegular priceUnit price / perSale price $6.07 USD -
MagnaFlow Conv DF 04-07 Subaru WRX/STi 2.5L T | (23149)
Vendor:MagnaflowRegular price $388.48 USDRegular priceUnit price / per$497.00 USDSale price $388.48 USDSale -
Fel-Pro Exhaust Pipe Flange Gasket | Subaru WRX / STI / Outback (89-21) (60957)
Vendor:Fel-ProRegular price $7.81 USDRegular priceUnit price / perSale price $7.81 USD -
Fel-Pro Exhaust Pipe Flange Gasket | Subaru WRX (13-21) / WRX STI (15-21) / Outback (13-14) (60902)
Vendor:Fel-ProRegular price $7.71 USDRegular priceUnit price / perSale price $7.71 USD -
MagnaFlow OEM Grade Catalytic Converter | Subaru Impreza (92-15) (49984)
Vendor:MagnaflowRegular price $407.91 USDRegular priceUnit price / per$522.00 USDSale price $407.91 USDSale -

Fel-Pro Exhaust Pipe Flange Gasket | Subaru WRX (13-21) / Outback (05-09) / Forester (13-24) (61365)
Vendor:Fel-ProRegular price $7.02 USDRegular priceUnit price / perSale price $7.02 USD -
Fel-Pro Exhaust Pipe Flange Gasket | Subaru WRX/BRZ/FR-S/86 (13-22) (61668)
Vendor:Fel-ProRegular price $7.52 USDRegular priceUnit price / perSale price $7.52 USD
Exhaust System Upgrades for Subaru Legacy B4 BM to Boost Performance and Sound
Enhance your Subaru Legacy B4 BM with premium exhaust system upgrades designed to improve power delivery, throttle response, and exhaust tone. This collection offers carefully selected aftermarket components engineered for precise fitment and durability, ensuring your Legacy performs and sounds its best.
How Do Cat-Back Exhaust Systems Improve Your Subaru Legacy B4 BM?
Cat-back exhaust systems replace the piping from the catalytic converter back to the muffler and tailpipe, optimizing exhaust flow and reducing backpressure. For the Legacy B4 BM, this upgrade can lead to a more aggressive exhaust note and smoother power delivery without compromising reliability.
- Enhanced exhaust flow for improved engine breathing
- Refined sound with a sportier tone
- Durable construction for long-lasting performance
- Designed for direct bolt-on fitment to maintain factory reliability
What Benefits Do Performance Mufflers and Downpipes Offer?
Performance mufflers in this collection are engineered to balance sound refinement with improved exhaust flow, giving your Legacy a distinctive yet controlled exhaust note. Downpipes improve turbo response by reducing restrictions immediately after the turbocharger, helping to optimize boost delivery and throttle response.
Choosing the Right Exhaust Upgrades for Your Subaru Legacy B4 BM
When selecting exhaust components, consider your driving goals—whether it’s a louder, more aggressive sound or smoother power gains. Our collection includes cat-back systems, mufflers, downpipes, and installation hardware all designed for your Legacy’s specifications. Shop WheelFlip to find quality parts that deliver reliable performance and fitment confidence.















