Pro Boat Firma 1900KV Marine Motor

The Pro Boat Firma 1900KV Brushless Marine Motor (SPMXMM3300) is a high-performance inrunner designed for surface RC boats running 4–6S LiPo. Delivering up to 3400W with a 140A maximum continuous current, it features a 5mm shaft and 5.5mm bullet connectors for a robust, straightforward installation.

With a 1900Kv rating, 51mm outer diameter and 86mm length, this four-pole, bearing-supported motor provides smooth, efficient power for demanding marine setups.

Key Specifications

• Adjustable Timing: No
• Input Voltage: 4–6S LiPo
• RPM/Volt (Kv): 1900Kv
• Shaft Length: 0.7" (18 mm)
• Bushing or Bearing: Bearing
• Forward: Yes
• Motor Design: Inrunner
• Application: Surface
• Number of Poles: 4
• Output: 3400 Watts
• Product Weight: 13.8oz (392g)
• Shaft Diameter: 0.2" (5 mm)
• Connector Type: 5.5mm Bullet
• Product Length: 3.4" (86 mm)
• Maximum Continuous Current: 140A
• Motor Type: Brushless
• Outer Diameter: 2" (51 mm)