Milltek Secondary Catalyst Bypass - BMW M3/M4 2021+ (G80/G82) - SSXBM1339
Ships free in the US
Make sure this fits your car
Fits: M3 G80/G81, M4 G82/G83
- Shop tested in Dallas
- Free pickup in Dallas
- Installs at our shop
Non-resonated 102mm secondary catalyst bypass for the BMW G8X M3 and M4 (S58 3.0 Turbo). Manufactured from T304L aircraft-grade stainless steel with mandrel-bent construction and hand-finished welds, this track-focused system eliminates secondary catalytic restriction while retaining OEM mounting points and hanger compatibility.
Key Features:
T304L stainless steel, mandrel-bent construction
Non-resonated 102mm design for maximum flow
Retains OE mounting points and hanger compatibility
Fits OE axle-back or Milltek axle-back systems
Fits: 2021+ BMW M3 (G80) and M4 (G82/G83)
Listed for these cars. Check the title and description for exact years, body styles and drivetrain.
| Make | Model | Chassis | Years | Fits |
|---|---|---|---|---|
| BMW | M3 | G80/G81 | 2021+ | |
| BMW | M4 | G82/G83 | 2021+ |
Not sure? Call or text 945-954-1142 with your car or VIN.
- Free US shipping on orders over $250.
- Free pickup at our Dallas shop, usually ready within 24 hours.
- Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
- Want it installed? Book the install at thegbmotors.com.
Full details are on our shipping and returns page.
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