7075 Rear Swing Arm Replacement for Promoto-MX MX057 by GPM  [MX057]

TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057
Price:
AUD$107.20
Brand:
GPM
Model:
MX057
GTIN:
4894538376586
Condition:
Brand New
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alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057"
alt="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057" title="TEAM LOSI DIRT BIKE PROMO-MX MOTORCYCLE Aluminum 7075 Rear Swing Arm (Larger Inner Bearings) - GPM MX057"

7075 swing arm replacement for Promoto-MX

This aftermarket rear swing arm is an RC-scale replacement crafted for LOSI Promoto-MX bikes, machined from 7075 aluminum to give a stronger, less flexible option than stock plastic arms. The arm accepts larger inner bearings noted as 16x8x5, which helps cut play at the pivot and keeps the rear geometry more stable under load.

Designed for direct replacement of Promoto-MX rear swing components on compatible LOSI 1/4 models, installation only needs typical RC workshop tools and basic rear teardown. Always confirm bearing fit and clearance before finalising the build since the arm is sized for the larger inner bearing dimensions mentioned above.

Packing includes

  • Rear swing arm - 1pcs
  • Bearing 8x16x5 - 2pcs

Original Name / Part No:

LOS264000

Compatible Models

  • LOSI-1/4 PROMOTO-MX MOTORCYCLE RTR, FXR-LOS06000
  • LOSI-1/4 PROMOTO-MX MOTORCYCLE RTR PRO CIRCUIT-LOS06002

Use this aluminium rear arm to firm up the rear end of LOSI Promoto-MX models; check bearing sizing and clearances during installation to match your riding and setup choices.

Do I need to buy extra bearings to use this arm?

The package includes two 8x16x5 bearings, but the arm is cut for 16x8x5 inner bearings; depending on your build you may need different inner bearings or to reorient the supplied ones.

Is machining quality suitable for competition use?

The arm is machined from 7075 aluminium to reduce flex and improve durability versus plastic arms; it provides a solid platform for aggressive hobby use rather than stock parts.

Will this fit without cutting or drilling?

For listed compatible LOSI 1/4 Promoto-MX models it fits as a direct replacement with no chassis modification expected, just normal removal and refit operations.

Any tips for bearing installation?

Use a proper bearing press or drift and verify the bearings sit squarely; check for binding and confirm chain or swing clearance before final assembly.

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