ARRMA Mojave 6S EXB V3 Front Knuckles 7075-T6 MJ3021 by GPM  [MJ3021]

ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021
Price:
£29.32
Brand:
GPM
Model:
MJ3021
GTIN:
4894538417951
Condition:
Brand New
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alt="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021" title="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021"
alt="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021" title="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021"
alt="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021" title="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021"
alt="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021" title="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021"
alt="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021" title="ARRMA MOJAVE 6S EXB V3 7075 Alloy Front Steering Blocks (Larger Outer Bearings) - GPM MJ3021"

Front steering knuckles specified for Mojave 6S EXB V3

This aftermarket front steering knuckle assembly is intended as a direct replacement for ARRMA Mojave 6S EXB V3 applications, precision-machined from 7075-T6 aluminum to maintain tight bearing alignment and chassis fit. It replaces OEM part ARA-4289 while keeping the same inner bearing dimension for straightforward hub compatibility.

Design notes are explicit: inner bearings stay at 15x24x5mm, outer bearings are upsized to 8x19x6mm (stock 8x16x5mm), and multiple tie rod mounting positions let you refine steering geometry without custom machining. Specified hardware uses grade 12.9 fasteners and includes red anodized aluminum hub nuts.

Fitting guidance: the components are shipped pre-assembled; apply a medium-strength screw adhesive to suspension fasteners to mitigate loosening during heavy running. After installation, confirm bearing preload, check steering free-play, and set tie rod lengths to the desired toe and Ackermann values before final torque.

Packing includes

  • Front Steering Blocks - 2 pcs
  • Aluminum Front Hub Nut Red - 4 pcs
  • Bearing 15x24x5 - 2 pcs
  • Oversized Bearing 8x19x6 - 2 pcs
  • Grade 12.9 Black Cap Head Screws 3x25 - 2 pcs
  • Grade 12.9 Black Cap Head Screws 3x10 - 4 pcs

Original Name / Part No:

ARA-4289

Compatible Models

  • ARRMA 1/7 Mojave 6S 4X4 RTR Brushless Desert Truck-ARA7604V3
  • ARRMA 1/7 Mojave 6S EXB 4X4 RTR Brushless Desert Truck-ARA7704V3

Owners wanting dependable, dimensionally accurate front steering knuckles for Mojave 6S variants will find this 7075-T6 set provides targeted upgrades—larger outer bearings and selectable tie rod locations—while retaining simple installation on the specified ARRMA models.

They are designed to replace ARA-4289 and keep the inner bearing size at 15x24x5mm, so they mount directly to the listed ARRMA hubs. Confirm hex and nut engagement during fitment.
Only the outer bearings are upsized to 8x19x6mm; internal drivetrain bearings are not affected. After fitting, check steering rotation and drivetrain alignment to ensure no unintended interference.
Inner bearing dimensions remain unchanged so wheel hex clearance is generally unchanged; always verify wheel fit and look for lateral play after assembly.
Inspect bearing seating, confirm tie rod lengths and toe settings, and re-torque suspension fasteners. Address any binding or unusual play immediately.
The kit is specified as a replacement for ARA-4289; check the product labelling and packaging to confirm you have the correct part before fitting.

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