Engineering Excellence. Delivering Reliability. 

With over 40 years of experience servicing, repairing, and rebuilding high-performance vehicles, we combine proven workshop expertise with innovative engineering solutions to deliver reliability where it matters most.

Built from Experience

Denstoj was born from a simple frustration: seeing high-performance engines fail due to valvetrain weaknesses and the lack of reliable aftermarket solutions. Drawing on decades of hands-on engine building and engineering experience, we set out to create components that perform under the most demanding conditions.

Our team brings real-world engineering expertise from industry leaders including Toyota, GM, and Tesla, ensuring every product is designed, tested, and manufactured to the highest standards.

Precision Valvetrain Solutions

We specialise in precision-machined valvetrain components engineered for performance, reliability, and durability. Our product range includes:

• Rocker Retainer Kits
• Solid Lifters for High-RPM Applications
• Custom Performance Engine Components

Our flagship rocker retainer kits have become a trusted solution for enthusiasts and racers seeking to protect their engines from catastrophic valvetrain failures.

Proven Performance

Denstoj products are trusted by performance enthusiasts and professional builders across a range of platforms, including:

• Toyota GR Yaris (G16E-GTS)
• Toyota 86 / Subaru BRZ
• Subaru FA20 & FB25
• Nissan SR20

Designed for the track and built to survive daily street use, our components deliver confidence when your engine is pushed to the limit.

Performance Workshop Specialists

Beyond manufacturing performance parts, we provide expert servicing, diagnostics, repairs, and performance upgrades for high-performance vehicles.

We have particular expertise in the Toyota 86 and GR Yaris platforms, offering everything from routine maintenance to complete engine builds and custom performance packages.

Our commitment to quality workmanship, honest advice, and old-fashioned customer service has earned the trust of enthusiasts for more than four decades.

Whether you're looking for a reliable repair, a performance upgrade, or proven engine protection solutions, we're here to help keep your vehicle performing at its best.