Yokomo Z2-300RUW Rear upper suspension mount and weight for YZ-2  [Z2-300RUW]

Rear upper mount to stabilise rear roll and add weight

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 stabilises the rear end by holding the arm more rigidly, which helps 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 behaviour 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

This mount is a targeted tuning part for riders who need a firmer rear upper arm attachment and the option to increase rear load on YZ-2 based setups; use incremental changes when adjusting weight to find the desired balance.