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Top Street Performance

Pro Series Nissan RB20/20DET RB25/25DET Cylinder Head Stud Kit

Pro Series Nissan RB20/20DET RB25/25DET Cylinder Head Stud Kit

SKU: 149-81963

$117.87
$117.87 $133.94
Shipping calculated at checkout.

In stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • Fits Nissan RB-series inline-six applications; verify RB20/RB25/RB26 engine compatibility before ordering
  • Cylinder head stud kit with 12-point nuts hardware and 35 Chromoly Steel construction for performance engine builds
  • Provides strong, consistent clamping force to support head gasket sealing and cylinder pressure control
  • Application-specific torque procedure listed in specs: 3 Steps up to 80ft-lbs with Lube

Description

Upgrade your Nissan RB inline-six build with a Pro Series cylinder head stud kit engineered for stronger clamping force, accurate torque readings, and reliable cylinder head sealing. Built for performance engine assembly, this kit helps improve head gasket retention and long-term durability under higher cylinder pressure.

Improved Head Alignment & Clamping
Stud-style fasteners help guide the cylinder head into position during assembly while providing strong, consistent clamping force for improved head gasket sealing.

Performance Fastener Construction
Constructed from 35 Chromoly Steel with a Black finish, this kit is designed for strength, corrosion resistance, and dependable performance during demanding engine operation.

Torque-Specific Installation
Designed for the listed application torque procedure: 3 Steps up to 80ft-lbs with Lube. Always follow the correct torque sequence, lubricant instructions, and any re-torque requirements for your engine.

Complete Application-Specific Kit
Sold as a kit. Verify cylinder head style, block thread size, and application notes before installation to ensure proper fitment.

Specs

Torque 3 Steps up to 80ft-lbs with Lube
Color Black
Fastener Style Cylinder head stud
Grade Performance
Nut Style 12-point nuts
Material 35 Chromoly Steel
Quantity Sold as a kit

Engine Fitment

COMPATIBLE WITH
NISSAN RB SERIES INLINE-6
• 2.0L RB20 / RB20DET
• 2.5L RB25 / RB25DET

COMMON VEHICLE APPLICATIONS
Nissan Skyline GTS / GTS-T (RB20 / RB25 equipped)
Nissan Laurel / Cefiro / Stagea RB swap applications
RB20DET and RB25DET performance builds

NOTES

Designed for Nissan RB20 / RB25 cylinder head stud applications.

Verify block, cylinder head, gasket thickness, and torque procedure before installation.

Not compatible with RB26DETT applications unless specifically confirmed.

Q&A

Emissions Notice

This product does not affect vehicle emissions and is not subject to emissions compliance regulations.