Spektrum RC Firma Losi® NASCAR 2840 4-Pole Brushless Motor (4500Kv)
About this part
Motor Overview
The Spektrum™ Firma™ Losi® NASCAR 2840 4-Pole Brushless Motor is a high-performance upgrade for your 1/12-scale Losi NASCAR AWD RC Racecar. Engineered for both speed and durability, this motor allows you to hit speeds up to 30MPH on 2S and an incredible 44MPH on 3S LiPo power. Built with quality materials and advanced design features, it ensures smooth power delivery and efficient operation. Whether you're replacing a worn-out motor or upgrading for more speed, the Firma 4500Kv motor is a powerful and reliable solution.
About the Motor
Engineered for Speed and Endurance
This 4500Kv 4-pole brushless motor combines high efficiency with rugged construction to deliver both power and longevity. The low-cog sintered rotor and precision ball bearings reduce resistance and improve overall performance. A hardened steel shaft adds durability, while the CNC-machined aluminum housing helps with heat dissipation during high-speed runs. The insulated high-purity copper windings maximize efficiency, ensuring consistent output on both 2S and 3S LiPo setups. Designed as a direct replacement for the Firma Motor/ESC/Receiver Combo, this motor offers plug-and-play convenience with race-winning performance.
Features:
- 4500Kv 4-pole brushless motor
- Low-cog sintered rotor design
- Precision ball bearings for smooth rotation
- CNC-machined aluminum housing
- High-purity insulated copper windings
- Hardened steel 2.3mm output shaft
- Designed for 1/12 Losi NASCAR AWD
Includes:
- (1) Firma Losi® NASCAR 2840 4-Pole Brushless Motor
Specifications:
| Suggested Application | 1/12 |
|---|---|
| Size | 4500Kv |
| Type | Brushless Sensorless |
| Voltage | 7.4-11.1V (2-3S) |
| Adjustable Timing | No |
| Watts | - |
| Connector | Bullet |
| Dimensions | 1.57x1.1in (40x28mm) |
| Shaft Diameter | 0.09in (2mm) |
| Weight | 3.1oz (86g) |
CA Residents Prop 65 Warning
WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...Reviews5.0 · 1 review
Perfect brushless for the losi nascar. Most brushless reviews for the Nascar complain that they run too hot. That's because they're all 5500-6000kv. Those might be fine on a large oval, but that's not what these cars are being raced on. The lower 4500kv of the Spektrum is perfect for short track oval. It has plenty of low end punch, and is most efficient in the 50-70% rpm range that is typically seen in short track. I can run 1 battery after another for over an hour, and it never runs more than 130 degrees. Couldn't be happier for the money. That said, it's a little coggy of the dig sometimes, but hey, it's sensorless. You can't always have it all.