HRB (Hughes Race Built) RB In Car Valve Spring Tool (RB20DET RB25DET RB26DETT)

Built from first hand experience in high-performance engine building, the HRB RB In-Car Valve Spring Compressor Tool offers a smart solution for valve spring service without needing to remove the cylinder head. Designed specifically for twin-cam NISSAN RB engines, this tool makes an otherwise frustrating job faster, safer, and more controlled.

Recognising the challenges unique to RB hydraulic lifter heads — where the valve retainers sit deep in the lifter bore — we engineered the retainer viewing cup with a larger cutaway for better access and easier spring assembly. While care is still required, this thoughtful design significantly improves the overall ease of the job.

Compatible with all NISSAN RB twin-cam engine variants and models.

Key Features:

• Billet 6061 aluminium body for lightweight strength
• Billet stainless steel retainer cups with large cutaway for improved access
• Bronze bushed body for ultra-smooth compression
• ¼-inch drive threaded rod for easy, precise operation
• Captive design prevents tool disassembly during use
• Anodised for durability and corrosion resistance

Why Choose the HRB RB In-Car Valve Spring Compressor

Valve spring changes on RB engines are notoriously tricky, especially with hydraulic lifters. The HRB tool was engineered specifically to tackle these challenges, saving time and reducing the risk of damaging components. Whether you’re upgrading valve springs for high-boost turbo setups, freshening a race engine, or servicing street-driven RB builds, this tool provides the professional-grade control you need.

Ideal for servicing valve springs on NISSAN RB20DET, RB25DET, and RB26DETT engines. Perfect for engine refreshes, camshaft upgrades, cylinder head servicing, and full high-performance engine rebuilds. HRB professional engine tools are trusted by race teams, professional engine builders, and serious enthusiasts worldwide.

This tool is included in our: RB Engine Build Kit

For tips and tricks for your RB in car valve spring job check out this blog:

How to Remove Valve Springs Without Removing the Head (And Why We Built Better Tools for the Job)