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Milltek Secondary Catalyst Bypass | BMW G8X M3 M4
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Milltek Secondary Catalyst Bypass | BMW G8X M3 M4

SKU: SSXBM1340

$1171.65 $1171.65
Non-resonated 102mm secondary cat bypass for BMW G8X M3/M4 (G80/G82/G83). T304L stainless, mandrel-bent, OEM+ fitment to Milltek or factory systems. Track-focused performance without modification.
More info Z-Pipe upgrade for existing Milltek BMW G80 M3 and G82 M4 secondary catalyst bypass customers. 3D printed 316L stainless. Replaces a Milltek X-Pipe, resonator or twin straight pipes in a 102mm mid-pipe or secondary cat bypass system. Cannot be used on its own. Engineered for the Emotion. - Read More

Parts

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

    • BMW > 3 Series > G80 M3 & M3 Competition S58 3.0 Turbo > 2021 and Later
    • BMW > 4 Series > G82 M4 & M4 Competition S58 3.0 Turbo > 2021 and Later

Shipping Information

This system ships in 1 box.

Box 1: 51 x 15 x 12 at 48.51lbs

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