Injora MBL32 G2 Waterproof Brushless ESC & 1721 Purple Viper Motor Combo (TRX-4M/Ascent-18)
About this part
Advanced Brushless Power for the Traxxas TRX-4M
Take your Traxxas TRX-4M to the next level with the Injora MBL32 G2 Waterproof Brushless ESC and 1721 Purple Viper Motor Combo. Designed specifically for micro crawlers, this high-performance system delivers ultra-smooth low-speed control, impressive torque, quiet operation, and waterproof reliability to help conquer technical trails with confidence.
About the MBL32 G2 & 1721 Purple Viper Brushless Combo
Smooth Brushless Performance
The Injora MBL32 G2 Waterproof Brushless ESC paired with the 1721 Purple Viper 2800KV Sensorless Brushless Outrunner Motor provides an outstanding balance of crawling precision and trail speed for the Traxxas TRX-4M. The efficient brushless system delivers smooth throttle response, strong torque, and significantly quieter operation than traditional brushed electronics.
Precision Crawl Control
Built around the proven AM32 firmware, the MBL32 G2 ESC offers exceptionally smooth low-speed modulation while remaining powerful at higher speeds. Optimized for Injora 1721 motors, the ESC supports 2S-3S LiPo batteries, features an adjustable 6.0V/7.4V BEC, and provides reliable power for high-performance servos.
Waterproof Trail Reliability
Designed for demanding trail conditions, both the ESC and motor feature waterproof construction for dependable all-weather performance. Multiple built-in safety protections—including low-voltage cutoff, fail-safe protection, and rotor lock protection—help ensure reliable operation during every adventure.
Features:
- Designed for the Traxxas TRX-4M platform
- 1721 Purple Viper 2800KV sensorless brushless outrunner motor
- MBL32 G2 ESC powered by advanced AM32 firmware
- Ultra-smooth low-speed crawling with precise throttle control
- Strong torque and powerful high-speed performance
- Virtually silent brushless operation
- Waterproof ESC and motor for all-weather driving
- Adjustable 6.0V/7.4V BEC output for high-performance servos
- Supports 2S-3S LiPo batteries
- USB programmable using the included programmer card
- Low-voltage, fail-safe, and rotor lock protection
- Factory tuned specifically for Injora 1721 brushless motors
Includes:
- (1) Injora MBL32 G2 Waterproof Brushless ESC
- (1) Injora 1721 Purple Viper 2800KV Brushless Motor
- (1) USB Programmer Card
- (1) Motor Pinion Gear (11T)
- (1) Motor Mount Hardware
- Assembly Hardware
- Product Manual
Specifications:
| Suggested Application | Traxxas TRX-4M |
|---|---|
| Motor Type | Brushless |
| Input Voltage | 2-3S LiPo (7.4-11.1V) |
| Continuous Current | 25A |
| Peak Current | 60A |
| Dimensions (LxWxH) | 1.18x0.75x0.47in (30x19x12mm) |
| Weight | 0.45oz (13g) |
| BEC Output | 6.0V / 7.4V Adjustable |
| BEC Current | 3A |
| Battery Connector | XT30 |
| Programming | USB Programmer Card |
| Waterproof | Yes |
| Suggested Application | Traxxas TRX-4M |
| Model | 1721 Purple Viper |
| KV Rating | 2800KV |
| Type | Sensorless Brushless Outrunner |
| Input Voltage | 2-3S LiPo |
| Motor Poles | 14 |
| Motor Slots | 12 |
| No-Load Current (11.1V) | 0.7A |
| Max Current | 20A |
| Motor Connector | PH2.0 3-Pin |
| Dimensions | 17.1x21mm |
| Output Shaft Diameter | 2mm |
| Pinion Gear | 0.4 Mod 11T |
| Weight | 0.66oz (18.7g) |
| Waterproof | Yes |
*Tech Note: Factory settings are optimized for Injora 1721 and 2204 brushless motors. Firmware modifications are not recommended.
*Tech Note: Supports PC programming using the included USB programmer card.
*Tech Note: Damage caused by unauthorized firmware flashing or modification is not covered under Injora warranty.