Full custom systems
Headers-back or cat-back systems in 304 stainless with the muffler and resonator of your choice.

The range
The workshop has built exhausts for hot rods, trucks and fishing boats for years. If it has an engine and needs a pipe that does not exist off the shelf, that is the job.
Headers-back or cat-back systems in 304 stainless with the muffler and resonator of your choice.
One-off systems for hot rods, classics and engine swaps where nothing bolts on.
High-clearance systems, snorkel-side exits and repairs after lifts and body work.
Wet and dry marine exhausts, generator and machinery exhausts, silencers and heat shields.
Indicative 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.
From a repair section to a full twin system.
Full systems typically $1,500–$6,000 + GST; repair sections from $350
Muffler swaps and repair sections start from around $350 + GST; twin systems, headers and polished finishes sit at the upper end.
Questions
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.
Yes, for most engines. Tube headers are built to the engine and chassis, and we can also repair cracked cast manifolds in some cases.
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
We confirm size, materials, the loadings or spec and how it will be used.
It is all priced before any steel is cut, so there are no surprises.
Built in the Patumahoe workshop to the agreed spec.
Delivered, fitted or installed and checked over before handover.
Also built here
Stair rails, deck balustrades, wire-rope and glass-post systems, made and installed.
ViewNine hand-made designs in mirror or satin 304 stainless, with flag, lock and pole options.
ViewDriveway, farm, pedestrian and security gates in galvanised steel or aluminium.
ViewSend through photos, rough measurements and how it’ll be used — we’ll come back with a practical next step and a price.