Trusted specialists for 50+ years on the Sunshine Coast
Toyota vehicles are trusted by owners who tow, tour long distances, and rely on their vehicle in tough Australian conditions. Whether you are pulling a caravan, carrying added weight, running larger tyres, or travelling remote areas, these demands place extra load and heat into the automatic transmission beyond what the factory system was designed to handle.
Our Toyota transmission upgrades are selected to suit how you use your vehicle. They are designed to control operating temperatures, reduce internal wear under load, and deliver the long-term reliability needed for confident towing and remote travel.
If your 4WD tows, goes off road or you simply want to maximise your automatic transmission’s longevity and reliability, tailored upgrades improve how it handles load, heat and demanding driving conditions. Our packages are built to maintain shift quality, manage temperature and extend durability, giving you a transmission that performs consistently when you need it to.
Upgrading the valve body increases torque capability, improves load handling and enhances shift feel for a stronger, more reliable transmission. This refined hydraulic recalibration produces quicker, more consistent shifts and greater durability. Whether you tow, drive off road or want longer service life, it provides a more confident and dependable driving experience.
Upgrading your transmission cooling system is a proactive way to prevent overheating, reduce wear and extend the lifespan of your automatic. Stable temperatures mean more consistent performance, especially when towing or driving in demanding conditions. It is a smart investment for any owner wanting improved reliability, durability and peace of mind under heavy load.
A lock-up controller reduces transmission heat by reducing converter slip, the main source of temperature in an automatic transmission. By engaging the clutch earlier and holding it longer, it provides stronger engine braking, better control and lower operating temperatures. This upgrade gives you a cooler, more responsive transmission and a driving experience with improved control under load.
Transmission remapping refines the control system to improve shift timing, gear selection and torque delivery. It reduces unnecessary gear hunting and sharpens response under varying loads. This upgrade is especially effective for vehicles running larger tyres, engine tunes or carrying heavy loads, providing smoother behaviour, better torque access and more consistent performance in demanding conditions.
Transmission temperature monitoring gives you real time fluid data and early alerts when heat rises beyond safe limits. By allowing you to react instantly, it helps you prevent wear and heat related damage. Ideal for towing or steep inclines, it supports informed decisions and lets you adjust your driving behaviour under demanding conditions.
A deep sump upgrade increases your transmission’s fluid capacity, giving the hydraulic system more volume for heat dissipation and contaminant absorption. This helps keep temperatures lower under load and can extend service intervals. By improving cooling efficiency and fluid stability, a deep sump supports better reliability and longer transmission life in demanding conditions.
Gained by reduced operating temperatures
By increasing operating clutch pressures
Due to reduced heat and slip
*Results vary depending on vehicle, usage, load, and driving conditions.
Ready for Confident Towing & Touring? Make an enquiry or call us today and start planning your upgrade with your trusted 4wd specialist.
A valve body upgrade is a precision re-calibration of your transmission’s hydraulic control system. It’s designed to deliver fa
A valve body upgrade is a precision re-calibration of your transmission’s hydraulic control system. It’s designed to deliver fa
A valve body upgrade is a precision re-calibration of your transmission’s hydraulic control system. It’s designed to deliver fa
A valve body upgrade is a precision re-calibration of your transmission’s hydraulic control system. It’s designed to deliver fa
A valve body upgrade is a precision re-calibration of your transmission’s hydraulic control system. It’s designed to deliver fa
Ready to Upgrade your 4WD’s performance and reliability for towing or off-road use? Make an enquiry or call us to book your upgrade with a trusted specialist.
Ready to Upgrade your 4WD’s performance and reliability for towing or off-road use? Make an enquiry or call us to book your upgrade with a trusted specialist.
Drivers return to us for honest advice, quality workmanship and clear communication. Here is what they have to say…
Had the transmission upgrade done and a external transmission cooler. Put on which Justin from Ron Hill suggested as we would be towing our caravan half way around Australia in Jan 26. Can’t recommend them enough . Service is awesome.
602+ 4.9 Star Google reviews
Had the transmission upgrade done and a external transmission cooler. Put on which Justin from Ron Hill suggested as we would be towing our caravan half way around Australia in Jan 26. Can’t recommend them enough . Service is awesome.
602+ 4.9 Star Google reviews
Had the transmission upgrade done and a external transmission cooler. Put on which Justin from Ron Hill suggested as we would be towing our caravan half way around Australia in Jan 26. Can’t recommend them enough . Service is awesome.
602+ 4.9 Star Google reviews
Had the transmission upgrade done and a external transmission cooler. Put on which Justin from Ron Hill suggested as we would be towing our caravan half way around Australia in Jan 26. Can’t recommend them enough . Service is awesome.
602+ 4.9 Star Google reviews
Had the transmission upgrade done and a external transmission cooler. Put on which Justin from Ron Hill suggested as we would be towing our caravan half way around Australia in Jan 26. Can’t recommend them enough . Service is awesome.
602+ 4.9 Star Google reviews
Had the transmission upgrade done and a external transmission cooler. Put on which Justin from Ron Hill suggested as we would be towing our caravan half way around Australia in Jan 26. Can’t recommend them enough . Service is awesome.
602+ 4.9 Star Google reviews
Had the transmission upgrade done and a external transmission cooler. Put on which Justin from Ron Hill suggested as we would be towing our caravan half way around Australia in Jan 26. Can’t recommend them enough . Service is awesome.
602+ 4.9 Star Google reviews
Had the transmission upgrade done and a external transmission cooler. Put on which Justin from Ron Hill suggested as we would be towing our caravan half way around Australia in Jan 26. Can’t recommend them enough . Service is awesome.
602+ 4.9 Star Google reviews
RHA Pro is Ron Hill Automatics’ solution for Australia’s towing, touring, and performance 4WD owners. It’s designed to maximise your transmission’s reliability and load-handling capabilities through a range of custom, vehicle-specific upgrades.
Ready for Confident Towing & Touring? Make an enquiry or call us today and start planning your upgrade with your trusted 4wd specialist
