Full custom systems
Headers-back or cat-back systems in 304 stainless with the muffler and resonator of your choice.
Custom fabrication · Automotive & marine
Custom stainless exhausts, TIG welded to fit.
Custom exhausts
Mandrel-bent 304 stainless exhaust systems and components for hot rods, classics, 4x4s, boats and stationary engines. Built on the vehicle so it fits, clears everything and sounds the way you want.
Indicative pricing · NZD
$1,500
from, + GST
Full systems typically $1,500–$6,000 + GST; repair sections from $350
Price guide & quoted scopeOr call Matt 021 2555 443
- 304 stainless
- Mandrel bends, TIG welded
- Built on the vehicle
- Fits and clears first time
- Any application
- Road, off-road, marine, plant
02 / Price & scope
Indicative exhaust pricing.
Indicative range only. Final pricing depends on pipe size, length, the number of bends, mufflers and how much of the original system can stay.
Discuss your quote with MattCustom stainless exhaust
From a repair section to a full twin system.
$1,500from, + GST
Full systems typically $1,500–$6,000 + GST; repair sections from $350
Details to agree for your job
- 304 stainless mandrel bends
- TIG welded, back-purged joints
- Mufflers and resonators to suit
- Hangers, flanges and heat shields
Scope & other costs
Muffler swaps and repair sections start from around $350 + GST; twin systems, headers and polished finishes sit at the upper end.
03 / Also built here
Plan the rest of your project.
Explore related products, or talk to the Patumahoe workshop about stainless steel, aluminium and mild steel fabrication.
04 / The practical details
Questions about custom stainless exhausts.
Why stainless rather than mild steel?
A mild-steel exhaust rusts from the inside out in a few years. 304 stainless lasts the life of the vehicle, which is why it suits classics, boats and anything you plan to keep.
Do you do headers and manifolds?
Yes, for most engines. Tube headers are built to the engine and chassis, and we can also repair cracked cast manifolds in some cases.
Can you make it quieter or louder?
Both. The muffler and resonator choice and the pipe diameter set the tone, and we will talk through what you want before anything is cut.
How it works
Spec, quote, fabricate, fit.
01
Spec
We confirm size, materials, the loadings or spec and how it will be used.
02
Quote
It is all priced before any steel is cut, so there are no surprises.
03
Fabricate
Built in the Patumahoe workshop to the agreed spec.
04
Fit
Delivered, fitted or installed and checked over before handover.
Let’s make it fit
Show Matt what you’re working with.
Send through photos, rough measurements and how it’ll be used — we’ll come back with a practical next step and a price.