| Fitment | BMW 3 / 4 Series (B58) |
|---|---|
| Part type | Cat-Back System |
| Material | Ti Gr2 |
Questions about this part
Which models does this fit?
Does the valve need wiring?
Cat-Back System
BMW 3 / 4 Series (B58) Valved Catback — Ti Gr2 (27)
Designed around BMW 3 / 4 Series (B58) Valved: factory hanger points and flange positions, so it bolts on instead of being fabricated on. Send the VIN and we confirm the part before dispatch.
Why this one
Built around BMW 3 / 4 Series (B58) Valved, not "universal"
Factory hanger points and flange positions mean the part hangs where the original did. Nothing is cut or welded, and the factory system can be refitted later.
Gr2 titanium — stated, not implied
The grade decides how it handles heat cycling and road salt. Buyers can verify it in five seconds with a magnet on austenitic stainless, and we say what the part is made of.
One check before the box leaves
Vehicle parts fail on fitment, not on quality. We match the VIN to the parts list first, and tell you if something does not line up rather than shipping and hoping.
Fitment
Built for BMW 3 / 4 Series (B58) Valved. Send the last seven characters of your VIN with the order and we check it against the parts list before dispatch.
<p>Built for <strong>BMW 3 / 4 Series (B58) Valved</strong>. Send the last seven characters of your VIN with the order and we check it against the parts list before dispatch.</p>
In the box
The main item as shown. Clamps, gaskets and fitting hardware are not included unless this listing states otherwise.
Specifications at a glance
The details that decide the fit.
| Product type | Catback system |
| Material | Gr2 titanium |
| Vehicle | BMW 3 / 4 Series (B58) Valved |
| Size | Default Title |
| Price | $1,550.00 |
| Stock | 150 units |
| Installation | Factory hanger points, no cutting or welding |
| Fitment check | VIN matched before dispatch |
From delivery to final check
Installation
Support the car and drop the factory section from the flange back.
Hang the new part on the factory hanger points with every clamp loose.
Align front to back, then set tip height and gaps before final torque.
Torque to spec, then re-check after one heat cycle.
Before you order
Questions worth answering first.
Will this catback system fit my car?
It is built for BMW 3 / 4 Series (B58) Valved. Send the last seven characters of your VIN and we confirm the part against the parts list before dispatch — that check is what prevents a return.
Does it need a tune or a controller?
That depends on position. A cat-back or axle-back sits behind the sensors and needs no tune. A downpipe or header sits upstream and sensor layout is confirmed per VIN before shipping.
Is anything cut or welded during the install?
No. The system hangs on factory hanger points and joins at factory flange positions, so the original system can go back on.
Who pays import duty?
The receiver. An estimate is shown before payment so the landed cost is not a surprise at the door.