AUTOEXE Lower Arm Bar (Rear) for Mazda RX8 (Series 1 & 2, 2003-2012)
RX8 Upgrades Front AutoEXE Rotors , Pads and Lines Now to eat , sleep and repeat on the rear Should be able to out brake Clint Jenner at revival now
Aftermarket radiators for Mazda RX8 built in Japan, engineered specifically for the thermal demands of the Renesis rotary engine. Whether you’re restoring cooling confidence in a daily driver or building resilience for track use, this range delivers genuine heat rejection in a direct-fit aluminium package.
RX8 Model
Price Range ($)
Category
Type
Colour
AUTOEXE Lower Arm Bar (Rear) for Mazda RX8 (Series 1 & 2, 2003-2012)
RX8 Upgrades Front AutoEXE Rotors , Pads and Lines Now to eat , sleep and repeat on the rear Should be able to out brake Clint Jenner at revival now
Shoutout to RX8 Upgrades for the greddy radiator + cap. Hit him up if u need new top quality rx8 parts, hes the man
Yes, I believe that's revision C. Racing Beat is a good store for Mazda's, I'd trust them when they say it's the real OEM coilset.
Fitted these bad boys up today new exhaust surrounds & the original Mazda chrome finishers. Mint!! Thanks RX8 Upgrades for the hard to get parts!
This panel is a thing of beauty. Just what I wanted. A million thanks to my darling wife for this awesome birthday present.
Full exhaust setup finally finished! All top quality jap items Odula Headers/Exhaust Manifold Odula RS Spec Muffler with Kakimoto Tail Finishers In Burnt Titanium Sard Hi Flow Catalytic Convertor As always shoutout to the main man who brings the goods RX8 Upgrades
The Renesis rotary generates heat continuously around the rotor housing. This differs fundamentally from the discrete firing intervals of a piston engine. As a result, the cooling system works at a higher base intensity at every rev, every drive. Meanwhile, an ageing OEM radiator with a degraded plastic tank is a genuine liability in a rotary. This is especially true during Australian summer driving, sustained high-rev use, or any time the car sees a circuit.
Therefore, choosing a quality aluminium radiator for the RX8 is one of the most effective reliability upgrades available, not just a maintenance item. Moreover, stable coolant temperatures directly influence how consistently the Renesis performs at the top of its rev range, where the engine is at its absolute best.
For a daily-driven RX8, a quality aluminium radiator replacement restores full cooling confidence. As a result, the known vulnerabilities of an ageing stock unit are put behind you.
For a car that sees regular track days, however, the upgrade gives the cooling system headroom to keep temperatures stable. For example, a factory unit may climb under sustained load where this one holds steady.
Finally, for the best result, pair the radiator with fresh silicone coolant hoses and a new thermostat to complete a full cooling system refresh.
These aftermarket radiators for Mazda RX8 provide the thermal foundation that protects the Renesis. Because temperatures stay consistent, the engine remains at its best from the first drive, whether that is a morning commute or a hot lap.
Koyorad radiators are engineered as drop-in replacements for the RX8, with hose port positions and fan shroud mounting points that match OEM specifications. No fabrication or custom bracketing is required, making installation straightforward for a competent home mechanic or workshop.
Koyorad RX8 radiators are constructed from high-grade aluminium throughout, using a brazed fin-and-tube core design. This makes them lighter than the original plastic-tank radiator and more resistant to the stress cracking and seepage that develops in aged stock units.
Koyorad radiators are manufactured in Japan. Koyorad also supplies OEM-specification radiators to vehicle manufacturers globally, so their aftermarket units are built to the same production standard rather than to a lower-cost replacement grade.
The Renesis rotary generates heat continuously around the rotor housing rather than in discrete combustion events like a piston engine, so the cooling system is under consistent load at every rev. A degraded or marginal radiator becomes a genuine liability during sustained high-rev driving, track use, or in warm Australian conditions where coolant temperatures can climb quickly.
Koyorad radiators suit both applications. For a daily-driven RX8, they restore full cooling confidence over an ageing stock unit. For a car that sees track days or spirited driving, the aluminium brazed-core construction provides the thermal headroom needed to keep coolant temperatures stable under sustained high-rev conditions.
Fresh coolant hoses and a new thermostat are the recommended companions for a radiator swap, completing a full cooling system refresh. Doing all three together gives the rotary a solid thermal foundation and avoids having a weak hose or sticky thermostat limit the performance of the new radiator.
Yes. Koyorad RX8 radiators are designed to retain compatibility with the factory fan shroud, so the existing cooling fan setup mounts correctly without modification.