GPM Racing 7075 Alloy Steering Knuckle (Larger Bearings) for Yikong YK7081 TB8 1/8 4WD RC Car (TB8/021)

7075-T6 aftermarket steering knuckle for TB8

Designed as an aluminium hop-up for YIKONG YK7081 TB8 platforms, this steering knuckle is machined from 7075-T6 to improve strength at steering load points while keeping weight low. It replaces factory part number 80004 and is meant for hobby-level upgrades and repairs where enhanced bearing life and firmer steering response are the goals.

The included hardware upsizes the inner bearing to 20x30x7mm (from 20x27x4mm) and the outer bearing to 15x24x5mm (from 15x21x4mm). The larger bearings reduce localized contact stress and help maintain steering performance under repeated impacts without altering the core chassis geometry.

Mounting screws and related hardware are supplied and components arrive pre-assembled where practical. For reliable installation, apply medium-strength threadlocker to mating screws and follow torque best practices for M3 fasteners to avoid stripping threads in aluminium parts.

• Steering knuckle, 7075-T6 aluminium body
• Inner bearings 20x30x7mm, outer bearings 15x24x5mm
• Mounting screws, pins and M3 nuts as supplied for direct replacement

Compatible Models

• YIKONG YK7081 TB8 1/8 4WD RC Car
• YIKONG YK8081 1/8 DF8 4WD Short Course Truck

This aluminium hop-up for TB8-series YIKONG kits concentrates on improving bearing durability and providing more consistent steering feel while remaining easy to install for routine maintenance or upgrades.

Which bearing sizes are provided with the knuckle?

The assembly ships with oversized inner bearings 20x30x7mm and oversized outer bearings 15x24x5mm as specified.

Is the part a direct swap for item 80004?

Yes, it is intended to replace factory part number 80004 and fits the listed YIKONG models without the need for chassis alteration.

Any recommended assembly notes?

Use medium-strength threadlocker on mating screws, assemble with care, and verify M3 fastener torque after initial running to ensure secure fitment.

Will the upgrade alter the original steering geometry?

The knuckle is built to accept larger bearings while preserving the core steering geometry, focusing the upgrade on durability and bearing performance rather than geometry change. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM's factory, so please allow around 14 days for dispatch.