TOMEI Inner Shim Kit Conversion Compatible with Toyota 2JZ-GTE/GE (JZA80 Supra) - Complete Valvetrain System (Lifters, Springs, Retainers) - Converts Outer Shim to Inner Shim

This is a complete valvetrain conversion kit, not just shims. The TOMEI Inner Shim Kit (Part # TA312A-TY03A) is a comprehensive system that converts the 2JZ-GTE/GE engine from its factory outer shim design to a high-performance inner shim (bucket) valvetrain. This conversion is mandatory for use with TOMEI's 33mm base circle inner shim-compatible camshafts and is essential for engines running 10.25mm+ lift cams. By reducing valvetrain mass and increasing rigidity, this system allows for higher RPM stability and more aggressive cam profiles. Kit Contents (Valvetrain Components Included): 1. Valve Lifters (24 pcs): Cold-forged Chrome-Moly steel, lightweight buckets. 2. Chrome-Moly Retainers (24 pcs): High-strength retainers for positive valve lock. 3. Valve Springs (24 pcs): Performance valve springs matched to the system. 4. Test Shims (24 x 2.70mm): For measuring and calculating required final shim thickness.

• Complete 2JZ Valvetrain Conversion System: This is a full conversion kit including lifters, springs, and retainers to convert your 2JZ-GE/GTE from an outer shim to a performance inner shim valvetrain.
• This conversion is mandatory for use with TOMEI's 33mm base circle inner shim-compatible camshafts (sold separately). It is NOT compatible with stock camshafts.
• Precision Valve Clearance Adjustment: Includes 24 x 2.70mm test shims for measuring clearance. Final adjustment shims (RB26 type shims, 2.20-3.50mm) are NOT included and must be purchased separately based on your calculated measurements.
• High-Performance Valvetrain Components: Features cold-forged Chrome-Moly steel lifters, high-strength retainers, and matched performance valve springs designed for high-RPM stability and aggressive cam profiles.
• Professional Installation & Tuning Required: Installation requires full engine disassembly, specialized tools, and professional expertise. An ECU retune is mandatory after installing compatible camshafts.