The Nissan RB25DET is one of the most iconic turbocharged six-cylinder engines to come out of Japan — a true performance legend. Found in Skylines like the R33 and R34, the RB25 earned its reputation for smooth power delivery, solid internals, and huge tuning potential. In Australia, it became a cult favourite thanks to the flood of Japanese imports in the early 2000s, and it remains one of the most popular engines for street, drift, and drag builds today.

What makes the RB25DET special is its perfect balance of old-school strength and modern engineering. With an iron block, aluminium head, and robust crank design, the RB responds beautifully to boost and tuning. Properly built, these engines handle big power — and sound absolutely incredible doing it. Whether you’re chasing 300kW on the street or over 800hp at the track, Spool Imports has the RB25 performance parts to get you there.

At Spool Imports, we’ve built our range of RB25DET performance parts around proven combinations used by tuners, workshops and DIY engine builders across Australia. From forged bottom-end kits to valve train upgrades, oil system improvements and fuel delivery solutions, every part is engineered to perform under pressure — literally.

• Bottom end strength: forged pistons, H-Beam & Drag Pro rods (upgradeable to ARP L19 bolts), billet crankshafts and main studs for ultimate durability.
• Top end reliability: cams, valve springs, retainers and gaskets designed for consistent sealing and control at high RPM.
• Oil control & cooling: upgraded pumps, pickups and baffles to prevent starvation under hard cornering or prolonged boost.
• Fuel & ignition upgrades: injectors, pumps, surge tanks and coils to feed reliable power delivery across the rev range.

As a Capricorn Preferred Supplier, Spool Imports provides trade-level service, fast nationwide shipping, and trusted support to workshops and tuners. DIY enthusiasts can rely on us too — with proven part combinations, expert advice and all the components needed to assemble a strong, dependable RB25 build.

Explore our complete range of Nissan RB25DET performance parts today and see why Australian Skyline and RB enthusiasts trust Spool Imports for their R32, R33, R34 and Stagea builds. Whether it’s forged internals, full rebuild kits or complete performance upgrades, we’ve got the parts — and the experience — to help you build it right.