LOSI Promoto-MX 7075 +30mm Swing Arm Upgrade Kit MX3057 by GPM  [MX3057]

TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057
Price:
AUD$190.21
Brand:
GPM
Model:
MX3057
GTIN:
4894538379105
Condition:
Brand New
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alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057"

7075 aluminium +30mm swing arm for Promoto-MX

The MX3057 upgrade kit swaps the stock rear linkage for a 7075 aluminium extended swing arm, plus a longer pull rod and matched chain to lengthen rear wheelbase by 30mm on LOSI Promoto-MX models. The parts are machined to fit and retain correct drive alignment after extension.

Designed for tuners not showpieces, the extension shifts weight distribution and changes rear traction response. The included pull rod and chain ensure the steering link and final drive remain in correct geometry. Installation is straightforward: remove the original arm, transfer bearings and hardware as needed, and secure the new components using standard tools.

Choose this kit to boost straight-line stability or to tweak traction on packed tracks; confirm your Promoto-MX variant compatibility and monitor chain alignment during initial runs for best results.

Packing includes

  • Extend swing arm(+30mm) - 1pcs
  • Pull rod - 1pcs
  • Chain - 1pcs

Original Name / Part No:

LOS264000+LOS264001+LOS262000

Compatible Models

  • LOSI-1/4 PROMOTO-MX MOTORCYCLE RTR
  • FXR-LOS06000LOSI-1/4 PROMOTO-MX MOTORCYCLE RTR PRO CIRCUIT-LOS06002

The MX3057 7075 aluminium +30mm swing arm kit is a practical upgrade for the specified LOSI Promoto-MX platforms, providing the extended arm, longer pull rod and matching chain needed to tune rear traction and stability.

Do I need to buy bearings separately?

In most cases you will reuse the stock bearings and fasteners. Replace any worn bearings during install to ensure smooth operation.

Will this affect wheelie tendency?

Lengthening the wheelbase usually reduces wheelie tendency and improves straight-line stability, but tune throttle and suspension to match your riding style.

Is any threadlocker required during assembly?

Use light threadlocker on steel fasteners where recommended, and torque to the original specifications to avoid loosening under vibration.

Can I revert to stock arm later?

Yes, the original arm can be refitted provided you retained the factory bearings and hardware removed during installation.

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