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Address: 23 Reserve road Melton 3337
LS Engine CNC Heads
Team Gm Motorsport headed over to New Zealand for the 2025 World Jetsprinting championship
3 different classes competed for the prestigious championship over 2 rounds..
LS Class- (LS Engines)
Group A- (Small Block Chev)
Unlimted- (Open)
Gm Motorsport had 2 boats entered- Bastian Mullan in the LS class and Phonsy Mullan in the Unlimited class.
Not only did Phonsy win the world championship in the unlimited class but his son Bastian took out the world championship in the LS class.
What Is The Special?
We are running a Full Exhaust System, Intake & Custom Dyno Tune Special!
The sale will only last 30 days!
To book in give us a call, put down a deposit and secure your spot!
World Class Dyno Facility
Phonsy, with his state-of-the-art mainline dyno, has perfected tuning for over 5000 Holden Commodores in the past two decades. The unparalleled data amassed during this period sets him apart in the industry. Rest assured that bringing your Holden to Phonsy means you're in expert hands!
Upgrading your exhaust system can have a significant impact on the performance and sound of your vehicle. A high-performance exhaust system can improve exhaust flow, reduce back pressure, and increase horsepower and torque. Additionally, it can give your car a more aggressive and sporty sound, which is sure to turn heads wherever you go.
When combined with our Ramjet 3 and custom tune, upgrading your exhaust system can further optimize the performance of your engine. These upgrades work together to create a more efficient and powerful engine that can deliver a thrilling driving experience.
We believe that upgrading your exhaust system in addition to getting a Ramjet and a tune is a great way to take your car to the next level. We would be happy to discuss the different options available to you and answer any questions you may have.
Step 1
Choose Your System
Whats Included?
VT, VX, VU, VY & VZ V8 ($4,499)
-Xforce Twin 2.5Inch Cat Back Exhaust
-Xforce 1-5/8 Headers & 2.5" 100 cell high flow cats
- Ramjet 2 OTR
-Custom Dyno Tune
Optional Upgrades
-Xforce 1-3/4 Headers & 3" 100 cell high flow cats (+$50)
-Xforce Twin 3Inch Cat Back Exhaust (+$290)
VE-VF V8 ($4,499)
-Xforce Twin 2.5Inch Cat Back Exhaust
-REX 1-3/4 Headers & 100 cell 2.5" high Flow Cats
- Ramjet 3 OTR
-Custom Dyno Tune
Optional Upgrades
-REX 1-3/4 Headers & 100 cell 3" high Flow Cats ($50)
-REX Triple Stepped Headers & 3" 100 cell high flow cats (+$290)
-Xforce Twin 3Inch Cat Back Exhaust (+$204)
Step 2
Book In Your Car
Call us now to discuss your desired package and any upgrades!
Secure your spot with a $100 non-refundable deposit and choose the date that works best for you. Simply drop off your car in the morning, and it will be ready for pickup the next day.
Complete your payment upon collection and enjoy your enhanced ride!
CUSTOMER TESTIMONIALS
What others are saying about us
Had an OTR and tune done on my wagon, pulled great numbers and couldn't be happier with the workmanship and service I received at GM Motorsports. Thanks to the team!!
-Andrew Smith
Had my car done with a Turbo Killer Cam & Hi-Stall don’t regret it one bit, Awesome Service as Always, more than helpful, highly recommended
-STREETL0W
Over the years Ive had a few cars in for performance work with gm Motorsport, they are very friendly and always answer any questions you have for them, very reliable workshop, highly recommended!
-Daniel Savasta
Why Are The REX Header's The Best?
REX Exhausts' revolutionary equal length headers. Crafted from premium 304 stainless steel with a polished finish, these headers mean business with their race merge collector design for optimal exhaust flow and serious power gains.
GM Motorsport have revolutionised the header concept by making a long tube equal length header that fits in a short location, all whilst having the rear pipes longer than any other header on the market.
Get all the performance benefits with zero ground clearance issues, or the need of a custom cat back exhaust as is required with traditional long tube headers. Add in triplestepped pipes for improved throttle response, race merge collectors, 304 stainless construction for quality at a great price and you have yourself the perfect storm
Package Related Videos!
25+ Years Of Experience
Warranty on our works!
Easy Fitment
Improved Power
Improved Tourque
