INJORA 9mm(+5mm) Black Brass Extended Wheel Hexes with Nuts for TRX4M

What this part does

This INJORA 4M-60-9BK set replaces the stock wheel hexes on a Traxxas TRX-4M 1/18 crawler. Each hex is brass with a black finish and the INJORA logo on the face. At 9mm thick, every hex moves its wheel 5mm outward. That widens the track and adds weight low at each corner of the truck.

The heavier brass drops the center of gravity and helps the truck resist rollover. The offset also keeps the front tires from hitting the steering link at full steering lock.

Specifications

Part number

4M-60-9BK

Brand

INJORA

Fits

Traxxas TRX-4M 1/18 RC crawler

Material

Brass, black finish

Hex width

7mm (listed by INJORA)

Thickness

9mm, a 5mm increase over stock

Total set weight

11 g (0.39 oz) for the brass version, per INJORA

Quantity

4 hexes with nuts, pins and spacers

Recommended age

14 years and up

Package contents

• 4 extended wheel hexes
• 4 nuts
• 4 pins
• 4 spacers

One set covers all four wheels.

What the extra 5mm changes

Stock TRX-4M wheels sit close to the axle housing. Swapping in these 9mm hexes moves each wheel 5mm outward. The wider track leans less in turns and on side slopes, which matters most on slow climbs where a rollover costs you the line.

Fit note: the hex is made for the TRX-4M. Stock and plastic TRX-4M wheels work with it, but one buyer on INJORA's product page found the hexes did not fit their INJORA brass wheels. Check the hex slot in your wheels before ordering.