Tamiya 18103 - Jr Cross Spear 01 1/32 Mini 4WD Kit on VZ Chassis, Race Ready  [18103]

Snapshot of the Tamiya 18103 Jr Cross Spear 01

The Tamiya 18103 Jr Cross Spear 01 showcases a sporty silhouette by designer Takayuki Yamazaki. It is mounted on the VZ chassis, which emphasises minimal weight and good torsional strength for competitive Mini 4WD running.

Exterior design and canopy options

Styled after performance automobiles, the Cross Spear 01 body uses light gray ABS, while the tinted light smoke ABS canopy detaches so you can choose an open or closed-top racer look. The modular design helps with both looks and aerodynamics.

What the VZ chassis delivers

The VZ chassis employs a truss framework connecting the centre section to the side cowls, delivering structural stability without excess mass. The drivetrain is set to a 3.5:1 gear ratio which balances speed and torque for everyday Mini 4WD tracks.

Performance upgrades and testing

To push performance, swap in a higher-grade Type 130 motor or experiment with tyre compounds to find the best grip. The included POM 620 plastic low-friction bearings support smooth wheel rotation for more consistent performance.

Assembly guidance and extras

Assembly is mostly snap-fit, making the build process quick and enjoyable. The driver figure is removable for personalisation. You will need two AA batteries to power the motor, these are not supplied with the kit.

Tamiya 18103 Jr Cross Spear 01 offers a well engineered Mini 4WD platform that is easy to build and tune, suitable for racers seeking a compact, adjustable machine.