RB Engine Swap Mount Kit for Datsun 240Z/260Z/280Z – Fits RB20, RB25, RB26, RB30 | Straightboost™ Performance

Straightboost™ Performance – RB Engine Swap Mount Kit for Datsun Z Chassis
Proudly Made in the USA

At Straightboost™ Performance, we’re committed to pushing the boundaries of automotive performance. We’re excited to introduce our newly updated custom engine swap mounts—designed specifically for our RB engine enthusiasts and engineered to deliver strength, precision, and reliability.

Our latest design improves upon the previous generation with stronger, more durable mounts, crafted to withstand the demands of high-performance builds.

Fitment:
This kit allows you to install any Nissan RB-Series engine into the Datsun 240z, 260z, and 280z chassis.

Key Features:

• Factory-style slant mount for authentic fitment

• Centered shifter position in the transmission tunnel

• Compatible with most rear-sump oil pans

• Fits front-facing intake plenums with minimal or no modifications

• Laser-cut from Grade 1018 mild steel

• Professionally TIG welded using pure argon for clean, strong welds

• Black powder-coated finish for durability and corrosion resistance

• High-quality Prothane polyurethane bushings

• Includes transmission tunnel sandwich plates

• All mounting hardware included

• Backed by a Limited Lifetime Warranty (See our Terms & Conditions)

Engine Compatibility:

• RB20DE / RB20DET

• RB25DE / RB25DET

• RB26DETT

• RB30

Transmission Compatibility:

• RB20

• RB25

• 300ZX TT & N/A (May require shifter or tunnel modifications)

• CD009 (May require shifter or tunnel modifications)

What’s Included:

• LH & RH Engine Mounts

• Prothane Polyurethane Bushings

• Transmission Crossmember

• Energy Suspension Polyurethane Transmission Mount

• Transmission Tunnel Sandwich Plates

• Complete Hardware Kit for Installation

Installation Notes:

Our transmission mount is designed to bolt directly to the transmission tunnel. Drilling is required, and we include low-profile hardware to ensure a clean, secure fit. This design allows you to set the ideal driveshaft angle before final installation.

Additionally, this mounting approach was intentionally engineered to provide superior exhaust clearance. Unlike many other kits on the market, which can interfere with custom or larger exhaust systems, our design accommodates more routing options—making exhaust fitment significantly easier and cleaner.

Note: If you prefer a no-drill solution or do not want sandwich plates inside your vehicle, this kit may not be suitable.

Keep in mind that not all Datsun Z transmission tunnels are the same—some modifications or massaging of the tunnel may be required depending on your chassis.

For Off-Road or Race Use Only