GReddy 13524500 Extreme Timing Belt – Nissan Skyline RB26DETT, RB25DET & RB20DET

Key Features and Benefits

• RB-series compatibility: Designed for RB26DETT, RB25DE(T), and RB20DE(T) engine families.

• Heat-resistant construction: Intended to withstand demanding engine operating temperatures.

• Enhanced flexibility: Helps resist cracking associated with repeated belt movement.

• Performance-oriented durability: Developed for modified street engines and motorsport applications.

• Consistent engine timing: Helps maintain proper camshaft-to-crankshaft synchronization.

• Reinforced belt design: Engineered to handle demanding timing system operating conditions.

• GReddy engineering: From a recognized Japanese performance manufacturer with extensive Nissan Skyline tuning experience.

Unlike a turbocharger or performance intake manifold, a timing belt does not directly increase horsepower. Its purpose is to maintain reliable mechanical timing.

GReddy 13524500 Product Specifications

Why Timing Belt Reliability Matters on Nissan RB Engines

The RB26DETT, RB25DET, and RB20DET engines have become popular platforms for high-performance builds because of their tuning potential and distinctive straight-six design.

However, additional horsepower doesn’t eliminate the need for proper preventative maintenance.

A worn timing belt can develop cracking, damaged teeth, or structural deterioration. Improper tensioning or worn timing components can also compromise synchronization.

For Skyline owners running upgraded turbochargers, aftermarket camshafts, or frequently operating their engines at high RPM, maintaining a healthy timing system is essential.

The GReddy 13524500 is designed to provide a performance-oriented replacement option for compatible RB engines.

GReddy Extreme Timing Belt vs. Standard OEM Replacement

The GReddy belt is designed for demanding applications, but that does not mean it eliminates routine maintenance or guarantees a longer service interval.

Installation and Maintenance Recommendations

When replacing the timing belt on a Nissan RB-series engine, inspect the complete timing system rather than replacing the belt alone.

Check the timing tensioner, idler pulleys, water pump, camshaft seals, crankshaft seal, and surrounding components for wear or leakage.

Proper alignment of the crankshaft and camshaft timing marks is essential.

Follow the appropriate Nissan factory service manual for installation procedures, belt tension, and fastener torque specifications.

For enthusiasts performing a complete engine refresh, replacing worn timing system components at the same time can help reduce the risk of premature failure.

Verified GReddy 13524500 Specifications

GReddy confirms that this belt uses high-saturation H-NBR rubber, specialized tooth construction, and reinforced materials designed to maintain accurate valve timing under demanding conditions.

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Note: GReddy’s Japanese catalog also references RB25DE applications. Verify the specific engine version before adding naturally aspirated RB25 vehicles to your store’s fitment database.

Vehicle Fitment – Nissan Skyline and GT-R

Common factory-engine applications. Model years below are approximate production ranges; verify engine and chassis before ordering.

GReddy additionally identifies compatible RB-powered Laurel, Stagea, and other Nissan chassis in its application catalog.

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For Pro Street Online, prioritize Nissan Skyline GT-R R32/R33/R34 and RB25DET/RB20DET Skyline applications, rather than assigning the belt to every Nissan model sharing a chassis designation.

Frequently Asked Questions

Does GReddy 13524500 fit all three Skyline GT-R generations?

Yes. GReddy lists the RB26DETT engine used in the R32, R33, and R34 Skyline GT-R.

Does it fit an RB25DET NEO?

GReddy lists RB25DET applications, including R34-era chassis. Verify the specific NEO engine’s timing belt configuration before ordering.

What makes the GReddy Extreme Timing Belt different?

It uses H-NBR rubber and reinforced tooth construction intended to resist heat, deformation, and mechanical stress.

Will it increase horsepower?

No. It is a reliability-focused timing component, not a power-producing modification.

Can I use it with aftermarket adjustable cam gears?

Yes, where the cam gears are compatible with the factory RB timing belt profile. GReddy specifically recommends pairing its RB26 adjustable cam gears with part number 13524500.

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Related Performance Resources

For owners planning larger RB engine upgrades, explore the ZF 8HP Transmission Swap FAQ at My Pro Street Online. It’s useful background for builders considering modern transmission conversions alongside high-output engine projects.

For product specifications, visit the official GReddy 13524500 Timing Belt listing