One-off hot rods, classics, and wild custom builds — engineered with precision, finished with attitude.

From engine swaps to full custom chassis work. No limits to what BKC can do.

At Brass Knuckle Customs, we don’t do average. We build monsters. From heart-stopping engine swaps to full air-ride chassis builds that scrape the ground and break necks, this is where horsepower meets craftsmanship. Every job that rolls through our doors gets the full treatment — precision, passion, and a bit of that Mount Maunganui madness. We’re not scared to cut, weld, grind, and push the limits to make something truly one-off. If you can dream it, we can build it — louder, lower, and meaner than you thought possible.

Our workshop is packed with brand-new gear — full CNC machinery, precision tooling, and complete in-house CAD design to make sure every bracket, mount, and panel fits like factory but looks like nothing else on the road. We mix old-school know-how with next-gen tech to create the kind of builds that stop traffic and start conversations. This is Brass Knuckle Customs — where the sparks fly, the boost builds, and there’s no such thing as too wild.

One Shop. Endless Capability.

Brass Knuckle Customs is where it all happens — full fabrication, diff builds, performance upgrades, and complete rebuilds under one roof. From chassis work to custom metal magic, every part is built in-house with precision, power, and attitude. No outsourcing. No limits. Just pure, unfiltered craftsmanship.

Fabrication & Chassis Work

From mild mods to full custom frames.

We build from the ground up — chassis, crossmembers, tubs, 4-links, roll cages, and anything else you can dream up in steel. All TIG/MIG welded, CNC-cut, and CAD-designed in-house for perfect fit and function. Whether it’s a static stance or a full air-ride setup, we make it sit right and ride mean.

Specialised Drag Cars & Roll Cages

Built for speed. Certified for safety.

From street-strip weapons to full drag monsters, we build cages and chassis that can take the hit and pass tech inspection every time. Full certified roll cages, tube chassis setups, and NHRA-style fabrication — all done in-house with CAD precision and TIG perfection. Whether you’re chasing a 10-second pass or just want the peace of mind of proper protection, we’ll make it strong, straight, and track-ready.

Engine Swaps & Performance Upgrades

More power. Less bullshit.

From LS swaps to turbo setups and everything in between, we live and breathe horsepower. Every engine bay gets built to perform — custom mounts, wiring, fuel systems, and exhausts. Whether you’re chasing 300hp or 1000+, we’’ll get you there with reliability and attitude.

Air Ride & Suspension

Lay it out or lift it up — your call.

We design and install complete air-ride systems, from notch to tank. Full control, perfect geometry, and that killer stance when you dump it in the driveway. All setups built for strength, safety, and style — tested, tuned, and ready for the road (or the show).

Diffs, Driveline & Rebuilds

Stronger where it counts.

Custom diff builds, ratios, lockers, and full driveline setups — all done in-house. We rebuild, modify, and upgrade everything from street rods to burnout beasts. No guesswork, no shortcuts — just proper engineering that holds up to abuse.

Custom Details & Finishing

Where craftsmanship meets chaos.

It’s the little things that make a build stand out. From bead-rolled panels and custom dashes to one-off badges and brackets, we finish every job with detail that screams Brass Knuckle. Nothing cookie-cutter — everything hand-built, one-off, and built to last.

Chassis Fabrication

Built from the ground up — no shortcuts.

From custom chassis rails to full frame builds, we design, cut, and weld everything in-house using CAD precision and CNC tooling. Four-links, C-notches, crossmembers — you name it. Every chassis leaves BKC stronger, lower, and ready for serious horsepower.

Custom Suspension & Front Ends

The stance makes the statement.

Full front-end conversions, custom control arms, coilovers, air ride — whatever it takes to make it handle like it looks. We tailor each setup to the car and the driver, tuned for both street and show. Built to perform, not just to pose.

General Repairs, Maintenance & Servicing

From oil leaks to overhauls — we’ve got it covered.

Even wild builds need regular care. We handle all mechanical repairs, WOF prep, servicing, tuning, and diagnostics. Old-school know-how meets modern tooling — so whether it’s a classic or a daily, it leaves here running right.

Full Restorations & Rebuilds

Bringing legends back to life.

From bare metal to show finish, we handle complete tear-downs, rust repairs, paint prep, wiring, and reassembly. Every nut, bolt, and panel is built with precision and pride. We don’t just restore — we reinvent.

Classic Car Auto Electrical

Old wires, new life.

We rewire classics from bumper to bumper — new looms, upgraded lighting, EFI conversions, digital dashes, and full custom harnesses. Clean, reliable, and hidden where it should be. Modern performance with vintage soul.

Parts Sourcing & Importing

Hard-to-find? Not for us.

We source and import performance parts, rare trim, and classic components from all over the world. Whether it’s something vintage out of the States or a one-off billet piece, we’ll track it down and get it to your build fast.

Build from Passion.
Driven by Grit.

Brass Knuckle Customs was born from pure obsession — the kind that keeps you up at night thinking about metal, boost, and the next wild idea that shouldn’t work but somehow will. We’re builders, not talkers. Every project that rolls into the shop gets the same treatment: hands-on craftsmanship, late nights, and zero shortcuts. Whether it’s a slammed C10, a blown drag car, or a full resto that’s been rusting in a shed for 30 years, we do it because we love it — not because it’s easy.

What drives us is simple — turning raw ideas into rolling art. We’ve built a team and a workshop that can do it all, from CAD design and CNC fabrication to wiring, tuning, and finishing. Every weld, every bracket, every detail has our fingerprints on it. We’re not here to be the biggest shop — we’re here to be the best at what we do. Built from passion. Driven by grit. That’s Brass Knuckle Customs.

Showcase of the Insane and Incredible.

Every build that leaves our shop is a mix of chaos and craftsmanship — built to turn heads, melt tyres, and shut mouths.

67c Totara Street
Mount Maunganui
New Zealand

Our workshop’s always open if you want to check out what we’re building, see the craftsmanship up close, and talk through your project. Drop in Monday to Friday, 8 AM – 4.30 PM, or hit us up to book a time outside those hours. Whether you’re chasing ideas or ready to kick off your build, we’re here to make it happen.

07 262 3010

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