Supertech Dual Valve Spring Kit for Nissan RB26 DOHC

The Supertech SPRK-M1007D-RB-2L dual valve spring kit is listed for Nissan RB26 DOHC 24-valve engines, including RB26DETT builds. It pairs SPR-M1007D springs with matching retainers and application-specific intake and exhaust seat locators for a professionally configured valvetrain. Ships fast across Canada and the US.

Kit Components

• 24 SPR-M1007D dual valve spring assemblies.
• RET-NRB60/TS retainers.
• Intake seat locator specification: SEAT-TS1015.
• Exhaust seat locator specification: SEAT-TS1015/2.

This listing is for the SPRK-M1007D-RB-2L configuration. Do not substitute specifications from the separate SPRK-TS1015/RB26 kit. Valve locks, valves and other valvetrain components are not represented as included.

Published Spring Specifications

• Part number: SPRK-M1007D-RB-2L
• Spring design: Dual
• Spring quantity: 24 assemblies
• Published maximum lift: 15.30 mm
• Coil-bind height: 24.70 mm
• Spring rate: 12.50 lb/mm
• Outer spring outside diameter: 28.10 mm
• Outer spring inside diameter: 20.00 mm
• Inner spring outside diameter: 20.00 mm
• Inner spring inside diameter: 15.20 mm

Engine Compatibility

Listed application: Nissan RB26 DOHC 24-valve. Confirm the cylinder-head configuration and exact component requirements before ordering, particularly with modified heads, aftermarket valves, different valve lengths or non-standard camshafts. Engine-based compatibility does not establish universal fitment for every vehicle or engine swap.

Installation Notes

Have a qualified engine builder measure and configure the valvetrain using current Supertech specifications. Establish the required pressures and operating clearances for the actual camshaft lift and intended use. Confirm retainer and valve-lock compatibility before assembly. No specific horsepower capacity or maximum engine speed is guaranteed.

Ships fast across Canada and the US.