WHO IS TJM NORTHERN BEACHES AND WHY ARE WE AUSTRALIA'S TRUSTED 4WD EXPERTS?
TJM Northern Beaches represents 50+ years of Australian 4WD engineering excellence. Founded by off-road enthusiasts for off-road enthusiasts. TJM started in 1973 when three passionate 4WDers recognised the need for Australian-made quality. Today, we're the most trusted name in 4WD accessories.
WHAT MAKES TJM NORTHERN BEACHES DIFFERENT FROM OTHER 4WD RETAILERS?
We specialise exclusively in 4WD modifications, not just general automotive work. Our team understands Australia's terrain and builds vehicles tough enough for Australia's most challenging destinations, including Cape York, Simpson Desert, and High Country adventures.
Every modification is backed by comprehensive warranties, ADR compliance certification, and ongoing technical support.
WHY CHOOSE TJM NORTHERN BEACHES?
EXPERT INSTALLATION & CUSTOM BUILDS
We don't just supply and fit parts – we engineer complete solutions for your specific build requirements. Every installation meets ADR standards with certified technicians ensuring both performance and legal compliance. Our 50+ years of experience across thousands of installations guarantee professional results.
UNMATCHED LOCAL KNOWLEDGE & HERITAGE
Our team knows Australian conditions, tracks, and touring destinations inside out. With over 20,000 satisfied customers, we've built our reputation on honest, expert advice and consistent, quality workmanship. We recommend the right setup for your adventures, from weekend camping to months-long expeditions.
COMPLETE 4WD SERVICE & PROVEN LEGACY
From initial consultation, through to the build and ongoing maintenance, TJM Northern Beaches is your long-term 4WD partner. Our TJM heritage represents Australia's longest-serving 4WD specialist network, with proven reliability across three generations of 4WD enthusiasts. One call handles everything from assessment to installation to warranty service.
WHAT IS TJM'S HISTORY AND WHY DOES IT MATTER FOR YOUR 4WD MODIFICATIONS?

TJM NORTHERN BEACHES HISTORY & AUSTRALIAN-MADE QUALITY
TJM was founded in 1973 by three off-road enthusiasts who recognised the need for Australian-made quality. Today, we're the most trusted name in 4WD accessories with products proven in Australia's harshest conditions from Kakadu to the Kimberley.
Every TJM product undergoes rigorous Australian testing, including testing on corrugated roads, water crossings, extreme temperatures, and exposure to salt air. This level of diligence ensures reliability when you're hundreds of kilometres from help.
Your investment is protected by decades of proven reliability and comprehensive warranty coverage.
WHAT 4WD SERVICES AND ACCESSORIES DOES TJM NORTHERN BEACHES OFFER?
Suspension Upgrades
Transform handling, ride comfort, and load-carrying capability. Investment ranges from $2,500-$40,000 fitted for complete performance enhancement
SHOP NOWGVM Upgrades
Legally increase your vehicle's carrying capacity by 300-1000kg through engineered certification. Investment ranges from $4,000-$50,000 fitted and certified for complete legal compliance enhancement.
SHOP NOWBullbars & Protection
Steel and alloy options for maximum frontal protection and accessory mounting. Investment ranges from $1,000-$5,000 fitted and certified.
SHOP NOWRoof Racks & Storage
Maximise cargo space with professional-grade systems. Investment ranges from $500-$2,500 installed and load-tested.
SHOP NOWTowing & Recovery
Professional-grade equipment for serious remote area adventures including winches, recovery tracks, and recovery kits.
SHOP NOWAudio & Multimedia
Apple CarPlay, Android Auto integration, sound deadening, premium sound systems with professional installation, maintaining factory warranty.
SHOP NOWHOW MUCH EXTRA WEIGHT CAN A GVM UPGRADE LEGALLY ADD TO MY 4WD?

GVM upgrades legally increase your vehicle's carrying capacity by 300-1000kg through engineered certification. This keeps you compliant, insured, and confident when carrying extensive touring gear or towing. Perfect for serious adventurers who exceed factory weight limits with accessories, equipment, or a caravan.
Popular GVM upgrade capacity increases:
Toyota LandCruiser 300 Series: +920kg (3,280kg to 4,200kg)
Ford Ranger: +320kg (3,280kg to 3,600kg)
Isuzu D-MAX: +500kg (3,100kg to 3,600kg)
BYD Shark 6: Custom hybrid engineering solutions available
Investment: $4,000-$45,500 fitted and certified – book early as availability is limited.
Call 1300 856 888 for your GVM upgrade consultation at TJM Northern Beaches – Sydney’s premier GVM specialists.
CUSTOMER REVIEWS
Big shout out to the boys at TJM Northern Beaches. A great job for my suspension upgrade. Knowledgeable, greate communication, workmanship and efficiency. Very happy with the result.
Glen and his team are very professional and knowledgeable I had heaps of questions around GVM upgrades and BTC upgrades on my LC200 series in order to tow a large caravan. I was given accurate informative advice which allowed me to make an informed decision on the way I wanted to progress. Work was performed in a timely manner. Overall a very good experience and I would use them again and recommend to friends and family.
The team just completed a heap of 12v work on my new car after doing work on my previous one. The workmanship as usual was first class and I can't recommend them highly enough. Given my Ineos is a brand new car to market they took the time and care to ensure it was completed professionally and exactly to my requirements.
What legends. Thank you to Jason and his team. We recently bought a brand new car with tow package including brake controller. Going away with van today, van had no brakes, had to leave it on the roadside as controller was faulty. Rang TJM Brookvale, Jason and his team tested and replaced brake controller all within 2 hours. Awesome service—TJM went above and beyond and such nice people. Rate 100 stars/5 stars.
For all 4x4 advice, products and service, look no further than TJM Northern Beaches in Brookvale. Jason has built a fantastic team of professionals who have both in-depth technical knowledge and experience and demonstrate some of the best customer service skills I’ve seen. They beat their competitors in this area hands down. Jason was fantastic with helping me design and specify my Y62 Patrol build earlier this year and was very honest about what they could do / supply and things that I would be better sourcing from other suppliers. Throughout the build, he provided solutions, not problems particularly regarding a pre rego GVM upgrade. He was great in communicating progress and working with Nissan to ensure all the work was completed prior to registration. A big shout out also to Andy and Ed in the workshop who were very patient and helpful in providing me with an operational handover once it was complete. They have also provided great after sales service. I’ll definitely be going back to TJM Brookvale for all my 4x4 needs and highly recommend them – no need to look further. Well done team!
Great work from Bayer at TJM to sort us out with a couple of sets of drawers and new canopy on the ranger. Great service and would highly recommend for any of your 4x4 needs!
Glen and the guys did an amazing job installing a towbar and wiring kit on my vehicle. Well priced and they turned it around in a few hours on pretty short notice. Highly recommend.
Boys at TJM did an outstanding job transforming a pre rego 2024 76 series V8 into an offroad weapon. Jmacx coil conversion, gvm upgrade, bar work, lighting, long distance diesel, water tanks etc. They were very invested in the project from start to finish. On time and on budget. Blake on the desk, Andy supervising the work and Bayar on all of the electronics. Very happy with the end product. Just completed the Oombulgurri track in it.