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Milltek Secondary Catalyst Bypass | BMW G8X M3 M4
SKU: SSXBM1340
Description
Non-resonated 102mm mid-pipe secondary catalyst bypass for BMW G8X M3 and M4. Direct OEM+ fitment to Milltek axle-back systems (SSXBM1340) or factory exhaust. Hand-finished T304L stainless steel construction with mandrel-bent piping.
Single mid-pipe configuration engineered for turbo-back flexibility. CNC-formed flanges, uses original hangers for installation without modification. Track-focused non-resonated design eliminates secondary cat restrictions for maximum turbo response and mid-range performance.
- Fitment: BMW M3 G80 / M4 G82 G83
- Configuration: Non-Resonated Secondary Cat Bypass
- Bore: 102mm mandrel-bent
- Material: T304L stainless steel, hand-finished
- Pairs with: Milltek SSXBM1340 axle-back or OE cat-back systems
- Installation: OEM hangers, no modification required
Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.
Key Facts
| Pipe Diameter | 101.60 |
| 1.5 to 2 hours to fit (including removing OE system) | |
| Race Product | Yes |
| EMarked | No |
System Fitment List
Shipping Information
This system ships in 1 box.
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