Torque Solution Piston Ring Compressor 90.17-93.98mm - Subaru EJ20 Engine Tool | TS-TL-918

The Torque Solution Piston Ring Compressor (TS-TL-918) is a precision-engineered engine assembly tool designed specifically for Subaru EJ20 engines, accommodating bore sizes from 90.17mm to 93.98mm (3.55–3.70 inches). Whether you're rebuilding a stock EJ20 or installing oversized pistons in a performance build, this tool ensures your piston rings compress evenly and seat correctly — eliminating the risk of broken rings, damaged cylinder walls, or misaligned gaps during installation. Purpose-built for the enthusiast builder and professional mechanic alike, this is an essential tool for any EJ20 engine rebuild.

Key Features & Benefits

• Precision Bore Range (90.17–93.98mm) — Engineered to fit both standard and oversized EJ20 pistons, providing a secure, even compression of all ring lands without risk of distortion or breakage.
• EJ20-Specific Design — Unlike universal ring compressors, this tool is tailored to the EJ20 bore diameter, ensuring a snug, accurate fit every time and eliminating the guesswork of adjustable-style alternatives.
• Durable Construction — Built to withstand repeated use across multiple engine rebuilds, making it a long-term addition to any engine builder's toolbox.
• Reduces Installation Risk — Properly compresses all piston rings simultaneously to prevent ring snagging on the cylinder deck, protecting expensive pistons and freshly honed cylinder bores.
• Torque Solution Quality — Manufactured by Torque Solution, a trusted name in Subaru and performance aftermarket components, backed by a reputation for engineering accuracy and reliability.
• Time-Saving Tool — Speeds up the piston installation process during engine assembly, reducing labor time for both DIY builders and professional engine shops.

What's Included

• 1x Torque Solution Piston Ring Compressor (TS-TL-918)

Specifications

Installation

This tool is intended for use during engine teardown and rebuild by experienced DIY mechanics or professional engine builders. To use: lubricate the piston and rings with clean engine oil, slide the ring compressor over the piston and compress the rings flush with the piston crown, then carefully guide the piston assembly into the cylinder bore. No permanent installation is required — this is a reusable assembly aid. Basic mechanical knowledge and familiarity with engine rebuilding procedures are recommended. Always follow manufacturer torque specifications and engine assembly best practices during use.