USA Standard Gear Transmission Synchronizer Ring

The USA Standard Gear transmission synchronizer ring (also called a synchro ring or blocker ring) is a replacement part for manual transmissions. It matches the speed of the gear and the shaft during a shift. This allows smooth, quiet engagement and helps prevent gear clash.

Key Features:

• Made to restore smooth, precise shifting in manual transmissions
• Designed to replace worn synchronizer rings that cause grinding, difficult shifting, or gears that pop out of position
• Friction surface is built to grip and match gear speeds during each shift
• Suited to transmission rebuilds and repairs
• Available in multiple part numbers to cover a range of transmission applications

USA Standard Gear supplies drivetrain parts for transmissions, differentials and axles. Replacing worn synchronizer rings during a rebuild helps restore shift feel and extends the life of the other gearbox components. Select the correct part number for your transmission from the available options.