LOSI Promoto-MX Chassis Tuning Swing Arm +30mm Kit MX3057 by GPM  [MX3057]

TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Extend Swing Arm (+30mm)+Pull Rod+Chain - GPM MX3057
Price:
£98.29
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"

Promoto-MX rear arm extension +30mm

The MX3057 aluminium kit upgrades the stock rear linkage with an extended swing arm, longer pull rod and matched chain to increase wheelbase by 30mm on compatible LOSI Promoto-MX models. The machined parts are supplied to preserve drive and steering geometry after the extension is fitted.

Its purpose is setup tuning rather than visual change: the extension alters weight distribution and rear traction characteristics, while the new pull rod and chain keep alignment within expected tolerances. Installation requires removing the original arm and refitting bearings and fasteners as needed; standard workshop tools are adequate for the job.

Install this kit to enhance straight-line stability or to tweak rear grip for specific track surfaces; always verify the exact model fit and check chain alignment during the initial shakedown.

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

MX3057 provides a straightforward aluminium +30mm extension for specified LOSI Promoto-MX platforms, delivering the longer pull rod and chain required to adjust rear traction and stability as part of chassis setup work.

How do I confirm my model is listed?

Refer to the Compatible Models box above for the exact model names and codes to ensure the kit suits your Promoto-MX variant.

Will braking feel different after stretching the arm?

Braking balance can change slightly with a longer wheelbase; retune brake input and suspension to maintain desired behaviour under deceleration.

Is the kit suitable for race use?

Yes, it is intended for tuning and may be used in competitive settings where the rules permit aftermarket chassis adjustments; check event regulations before race use.

How soon should I recheck fasteners after first runs?

Inspect and retorque fasteners and check chain alignment after the first practice runs to ensure nothing has settled or loosened during initial use.

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