GPM Racing 7075 Alloy Front Spindle Set (Larger Inner Bearings) for Losi 1/6 Super Baja Rey 4x4 (SB021)

Precision CNC knuckles for SUPER BAJA applications

The SB021 aluminium front knuckle arm set is a CNC machined steering component engineered for Team Losi SUPER BAJA chassis. These machined knuckles provide accurate bearing bores and two selectable mounting positions to adjust knuckle inclination relative to the steering turnbuckles.

From an engineering perspective the parts reduce lateral play at the bearing seats and maintain better CVD geometry, which minimises binding and preserves efficient driveshaft rotation through suspension travel. The increased stiffness of aluminium delivers repeatable steering geometry under load compared with the stock plastic parts.

Supplied hardware includes stainless steel round head screws 4x28 - 2 pcs, stainless steel button head screws 3x10 - 2 pcs, and stainless steel 4M threaded rods - 2 pcs, supplied with the knuckles. Where the instructions request using original screws, retain those parts to preserve design clearances and intended fitment.

Assembly guidance: ensure bearing bores are clean and bearings seat squarely, verify CVD operation during full suspension articulation, and use the alternate mounting hole to fine tune ackerman and scrub radius for your setup. Routine hex drivers are sufficient for assembly and service.

Specifications

• Item: Aluminium front knuckle arms set
• Material: Aluminium (CNC machined)
• Model Number: SB021
• Compatibility: Team Losi SUPER BAJA

SB021 is intended for model builders seeking improved bearing location and stable steering geometry on Team Losi SUPER BAJA platforms while maintaining factory turnbuckle and CVD alignments.

This item is compatible with

• TEAM LOSI Super BAJA REY 4X4

Are SB021 knuckles tolerance-checked for runout?

Each knuckle is CNC machined to consistent bore geometry to reduce bearing runout; inspect bearing seating during assembly and replace any bearings that show excessive play.

What torque practice is recommended for the mounting screws?

Tighten screws progressively and evenly to avoid distorting the knuckle; use moderate torque appropriate for aluminium and stainless fasteners and recheck after initial running.

How should I use the alternate mounting hole for setup?

Select the alternate hole to change knuckle angularity, which adjusts scrub radius and roll center influence; evaluate handling on your specific tyre and suspension setup to decide the preferred position.

Any recommended checks after first installation?

After fitting, confirm bearings are flush, verify CVD rotation through full travel, and perform a short test session to ensure no binding or unexpected steering behaviour before final tuning. 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.