YZ-2 Rear Upper Suspension Mount and Weight - Z2-300RUW by Yokomo  [Z2-300RUW]

Rear upper mount to reduce roll and add rear mass

This aluminum rear upper suspension mount is designed for the YZ-2 2WD off-road platform to secure the rear upper arm and reduce twisting under rear roll. The part holds the arm more rigidly to help maintain alignment during lateral loads.

The mount includes two small weights (6g each) that can be fitted to increase rear axle load. Adding these weights shifts more mass toward the rear to raise traction at the rear wheels; this is a tuning option to influence balance and corner entry behavior on loose or low-traction surfaces.

Installation is straightforward for users familiar with YZ-2 service: remove the stock rear upper mount, position the Z2-300RUW, and fasten using the existing attachment points on the YZ-2 chassis. Check fastener torque after the first runs and after impacts to ensure the upper arm remains securely fixed.

Tuning notes: start with one weight installed and evaluate handling before adding the second, and verify that added mass does not interfere with suspension travel or drivetrain components. Use routine checks on mounting screws and surrounding components after track use.

Compatibility

• B-YZ2CA
• B-YZ2DTM

A targeted tuning piece for drivers wanting a firmer rear upper arm attachment and the option to add rear load on YZ-2 setups; apply weight incrementally to find the preferred balance.