Bespoke Exhaust Fabrication · Made In-House
Off-the-shelfBuilt for the G80 M3
Downpipes, midpipes, valved systems and titanium tips — engineered for flow and tone, and made to bolt straight onto your car. Pick your platform and see only what fits.
▸ Find parts for your car
✓ 2 parts currently in stock for the BMW G80 M3
Step 1 — Pick your platform
Shop by Vehicle
Off the shelf · In stock
Ready to bolt on
Fits your G80
▶Sound
▶Sound
Mid-pipes
S58 Z-Pipe Mid-Section
Twin 2.5″T304 SSBolt-on
$1,680AUD · in stockView
Fits Golf R · S3
▶Sound
▶Sound
Downpipes
3.5″ Catless Downpipe
3.5″CatlessTIG welded
$699.99AUD · in stockView
Fits Golf R · S3
Intake kits
Cold Air Intake
Washable filterHeat shieldBolt-on
$629.99AUD · in stockView
Can't buy it off the shelf?
We'll build it.
Every off-the-shelf part started on the bench. If your car isn't listed yet — or you want something one-of-one — bring us the vision. Full custom systems, headers and fabrication, TIG-welded in-house and tuned by ear and dyno.
Why Octane
No drop-shipped junk
01
T304 Stainless
Aircraft-grade 304 stainless tube. No thin 409 that rusts out in a season.
02
Welded In-House
Every join TIG-welded on our bench — not boxed in a warehouse overseas.
03
Real Fitment
Test-fitted on the actual platform before it's listed. If it says it fits, it fits.
04
Tone You Can Hear
Sound clips on every system. Know exactly what you're buying before you buy.