Promoto MX/SM Pro Swingarm
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Description
đ Losi Promoto MX / SM Performance Swingarm
Reinforced. Optimized. Thought out to the last detail.
This newly developed swingarm for the Losi Promoto MX & SM is not a standard spare part â it is a structural upgrade for ambitious riders.
â Compatible with original chain tensioner
Plug & Play â no adjustments necessary.
â Reinforced main structure
Optimized force line for maximum stiffness during acceleration, hard landings, and aggressive riding.
â Modified chain guide â constructive advantage
The chain guide has been specifically revised:
- Recessed mounting in the swingarm
- Reduced stress in the mounting area
- Minimized risk of breakage on the swingarm
- Defined breaking point on the chain guide
In extreme cases, the chain guide breaks, not the swingarm.
This protects your main component and reduces consequential damage.
đ The matching chain guide is available separately on my MakerWorld page.
â Printed from PLA Tough+
High impact strength, clean dimensional accuracy, and strong layer adhesion for reliable performance.
Developed for:
- MX Track
- Supermoto conversions
- Bash sessions
- Performance builds
Aftermarket part â not an OEM Losi product.
RC model not included
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.












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