Coastal Diesel Solutions — Bilambil NSW
4x4 Suspension and Modifications — Gold Coast & Tweed
4x4 modifications, performance upgrades and complete touring builds for diesel 4WDs across the Gold Coast and Tweed. From a single upgrade to a full build, we set vehicles up to work properly under load — not just look the part.
4x4 Suspension and Modifications done properly, the first time
A 4x4 build is a system, not a shopping list. Fit a big bar, a canopy, a second battery, drawers and a van on the back, then wonder why the vehicle feels slow, hot and unstable — because every one of those additions changed how the vehicle works. We plan 4x4 modifications around how you use the vehicle, so power, cooling, braking, driveline and 12V systems all end up working together. Over 20 years of diesel experience means we know which upgrades deliver and which ones just cost money.
What's Included
Everything covered in your 4x4 suspension and modifications
Building a 4x4 That Works Under Load
The most common problem we see is a heavily accessorised 4WD that has never had its mechanicals brought up to match. It sits low, the transmission runs hot, the brakes are marginal and the engine is working flat out at highway speed. Fixing that is not glamorous, but it makes the vehicle safer, more reliable and far more pleasant to drive.
We start with the way you use the vehicle: how much weight you carry, what you tow, how far you travel and where. From there we prioritise the modifications that make the biggest difference, and we tell you which of the extras on your list can wait.
Performance Upgrades That Pull Their Weight
For most diesel 4WDs the biggest single gain comes from a custom tune, and it is even better when the vehicle can breathe. A matched package of exhaust, intercooler and tuning transforms a loaded 4x4 — earlier torque, cooler exhaust gas temperatures on long climbs and a transmission that stops hunting for gears.
Beyond that we fit upgraded turbos where the airflow genuinely runs out, transmission coolers for towing, heavy-duty clutches for manuals that slip under load, and driveline components sized for the weight the vehicle actually carries. Every performance upgrade is chosen to improve reliability as well as output.
Suspension and Lift Kits as Part of a Build
Most builds also need suspension and a lift to carry the extra weight safely, and we fit those in-house. For the detail on load-rated springs, lift kits and towing stability, see our dedicated 4x4 suspension and lift kits page, linked below.
Driveline, Cooling and Braking
Weight and towing punish the parts you never think about. We fit transmission and engine cooling upgrades for long climbs in summer, heavy-duty clutches and driveline components where factory parts are marginal, and address brake performance so a loaded vehicle pulls up the way it should.
Everything is sized to the real weight of the vehicle once it is loaded, not the brochure figure, and we road test under load before it goes home.
Touring, Towing and 12V Setups
Long-distance touring and heavy towing put demands on a 4WD that no factory calibration accounts for. We set up dual battery and 12V systems, fit auxiliary fuel capacity, sort out brake controllers and towing electrics, and fit snorkels, underbody protection and diff breathers for rough country and water crossings.
Before a major trip we can run a full pre-departure inspection covering the driveline, cooling system, brakes, fuel system and diagnostics — so problems get found in the workshop rather than a thousand kilometres from anywhere.
Complete Builds, Staged to Your Budget
A complete touring build does not have to happen in one hit. We plan the whole vehicle up front, then stage the work so each step is useful on its own and nothing has to be redone later. That means the tune suits the airflow you end up with, the cooling suits the weight you end up towing, and the 12V system is wired once, properly.
"Great Service. Cleanest workshop I've ever seen. Mick was straight-up, no BS and really helped me sort out a long term idle hunting issue, adjusted the fuelling and now my 80series is running like a dream. I'm heading back in a few weeks for injectors and a fuel pump rebuild. Highly recommend."
— Mitchel Smith
"Mick and the team at Coastal Diesel were great to deal with. The service and installing King suspension on my Isuzu NPS truck was top notch."
— Sam Schoeller
"Was looking around for a solid while for someone to do a front swivel hub rebuild on my 80 Series Land Cruiser. Contacted a young fella named Riley and he managed to book it in for me with close to no notice and got it all done on a Thursday afternoon! Would 100% recommend Coastal Diesel Solutions to anyone in need of professional, talented, fair-priced repairs. 5 stars without a doubt! Solid work team 👏"
— Andrew Bower
"Had issues with my car going into limp mode. Been to multiple mechanics, no one could fix it. One of my mates said to go to Coastal Diesel and they didn't disappoint — they did a great job!"
— Radharaman Beresford
"Highly recommend. Fixed an ongoing problem with a power issue related to the turbo and fuel delivery. So much care in his work, very knowledgeable without the BS. I'll be trusting all future services and mechanical issues to Coastal Diesel Solutions."
— Janaka Peterson
"Put me immediately at ease when I added petrol instead of diesel to our car. Our car was back on the road within 24 hours. A genuinely nice person to deal with. Many thanks."
— Jo Porter
"Great, honest reliable service and generous advice."
— Laura Stampa
"The best. End of story."
— Phil Towle
"Highly recommended. Dropped everything to sort a fuel issue we had with our 4WD whilst we were on holidays 1100 km from home."
— Lindsay Wallace
"Coastal Diesel did a major service and fuel system recondition to my newly restored 75 Cruiser. It runs like a dream and safe to say after a week at Fraser Island she has been put to the test. Nice to see decent workmanship is still around. Thanks to Mick and the team, I know where I'll be spending my money. Cheers!"
— Frank Waite
"Couldn't ask for better help. Mick is a top mechanic with a great personality. Don't bother wasting your money elsewhere!"
— Aaron Fairfull
"My 2013 diesel had been sick for a long time and many non-diesel mechanics charged a lot but couldn't fix it. Mick returned my call on his Christmas holidays and made time to check my car was safe to drive until he could book it in. He's kind, honest, reliable and genuinely professional — sent photos, kept me informed, and definitely won't rip you off. Turned out to be a cracked hose and solidified soot in the pipes. Now she purrs along with no smell and dramatically better fuel economy. If you have a diesel, you need a diesel specialist — and Mick is THE diesel specialist."
— Donna Dibben
"These guys installed a new engine in my Ford Transit when no Ford dealership would help. I'm now ready to take it back for its 1000 km check-up and can't find anything to complain about. Well done boys."
— Norm Morrow
"Highly recommend Mick. Knowledgeable and solutions-focused mechanic."
— Rosie Dennis
"Five stars isn't enough. Thank you very much!"
— Pascal Nicolet
"Awesome bunch of people. Great service."
— Robert Brown
"Good service and very helpful all round. Good people 👍"
— Greg Humphreys
"Excellent friendly service. Highly recommend."
— Mary Jane Dunn
"Great service and nice guy."
— Alan Stephenson
Why Choose Coastal Diesel Solutions
Book Your 4x4 Suspension and Modifications
Talk to the team at our Bilambil workshop for honest advice and a clear quote. Servicing the Gold Coast and Tweed, Monday to Thursday.
FAQ
Frequently Asked Questions
Areas We Service
We look after customers right across the Gold Coast and Tweed, including Coolangatta, Tweed Heads, Banora Point, Bilambil, Kingscliff, Murwillumbah and Pottsville, as well as the wider Tweed Shire and Northern NSW.