Product Details
The Spektrum™ Firma™ 4685 1450Kv Sensorless Brushless Motor is the perfect replacement option for the ARRMA® Limitless 120 RTR. This motor features a low-cog 4-pole rotor design, CNC machined aluminum housing, insulated high-purity copper windings, a high-quality alloy steel 8mm output shaft, and precision bearings for durability and smooth rotation.
Key Features
- Developed as a standard part for the Limitless 120 8S RTR (ARA7816), and compatible with the Outcast EXB 8S RTR (ARA5810V2T1) and Kraton EXB 8S RTR (ARA5808V2T1)
- Highly efficient design
- High-quality 4-pole sintered rotor
- 4S-8S LiPo power compatible
- Higher RPM, lower torque variant of SPMXSM1205
In The Box
- (1) Firma 4685-1450Kv Brushless Motor
There are no related hopups for this product.
There are no related parts for this product.
FIRMA 4685 1450KV Brushless Motor: 8mm by Spektrum SRP $309.22
- Brand: Spektrum
- Categories:
- - Surface Brushless Motors
- - Surface Brushless motors
- - Arrma 1/7 LIMITLESS 8S AVC 4X4 RTR Brushless Parts
- Product Code: SPMXSM5400
- Availability: Please Order


