INJORA
MBL32 G2 Waterproof Brushless ESC & 1721 Purple Viper Outrunner Motor for 1/18 TRX4M Ascent-18 Upgrade
*Price sourced from Amazon.com. Last updated 2026-07-07. Price and availability subject to change.
Bottom line: The MBL32 G2 Waterproof Brushless ESC & 1721 Purple Viper Outrunner Motor for 1/18 TRX4M Ascent-18 Upgrade is a niche pick — read recent reviews before buying in the displays & upscalers category, priced around $56.99. Read recent reviews carefully before committing.
SpecPicks Verdict
SpecPicks classifies INJORA MBL32 G2 Waterproof Brushless ESC & 1721 Purple Viper… as a niche pick — read recent reviews before buying in the displays & upscalers category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. INJORA's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for displays & upscalers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Note: Not compatible with stock 2-in-1 Receiver & ESC.
- ✓ Backed by INJORA's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Note: Please do not flash or modify the firmware by yourself. Any damage caused by unauthorized firmware flashing or modification is not covered under INJORA warranty.
- Note: Not compatible with stock 2-in-1 Receiver & ESC.
- Note: Some noise at mid-throttle is normal for the 1721 motor due to its high-speed, open-rotor design. This does not indicate a defect.
- Note: The 1721 Purple Viper is best for rigs under 700g. For heavier rigs, we recommend the 2204 Fat Viper for stronger drag brake performance.
- The INJORA MBL32 G2, based on the AM32 firmware, is meticulously tailored for Micro crawlers and is programmable via USB programmer card. Factory settings are optimized for INJORA 1721/2204 motors—adjustments are not recommended.
- Smooth and linear at low speeds, powerful and aggressive at high speeds. Runs more quietly than brushed systems, producing virtually no noise.
Full Specifications
| Note | Not compatible with stock 2-in-1 Receiver & ESC. |
|---|---|
| Brand | INJORA |
| Model | MBL32-INM19-4M |
| Weight | 700g |
| Part Number | MBL32-INM19-4M |
| Connectivity | USB |
| Multiple Protections | Low-voltage, fail-safe, and rotor lock protection. |
Ready to buy?
INJORA MBL32 G2 Waterproof Brushless ESC & 1721 Purple Viper Outrunner Motor for 1/18 TRX4M Ascent-18 Upgrade is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-07-07. Price and availability subject to change.
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