4685 1350Kv Brushless Marine Motor – Spektrum SPMXMM1000

The Spektrum 4685 4‑pole Brushless Marine Motor (1350Kv) is a water‑resistant inrunner designed for dependable RC boat performance. With a 46 × 85 mm can, 5 mm shaft and factory‑fitted 6.5 mm bullet connectors on 160 mm leads, it offers an efficient setup for marine power systems. Part number SPMXMM1000 includes a cooling sleeve to help manage temperatures on the water.

Operating across 2S–8S LiPo (8.4–33.6V) with up to 70 A continuous current and as much as 4000 W on 8S, this motor balances torque and top‑end speed at 1350 Kv, making it a solid option for marine applications where a 46 × 85 mm inrunner format is required.

Specifications

• Bushing Or Bearing: Bearing
• Connector Type: 6.5mm Bullet
• Connector Wire Length: 6.2" (160mm)
• Efficiency: 84%
• Input Voltage: 8.4–33.6V (2S–8S LiPo)
• Maximum Continuous Current: 70A
• Motor Design: Inrunner
• Motor Type: Brushless
• Number of Poles: 4
• Outer Diameter: 1.81" (46 mm)
• Plug Type: D6.5
• Power (watts): 4000 (8S)
• Product Length: 3.35" (85 mm)
• Product Weight: 646g (1lb. 6oz)
• RPM/Volt (Kv): 1350Kv
• Shaft Diameter: 0.19" (5 mm)
• Shaft Length: 0.84" (21 mm)
• Water-Resistant: Yes

In The Box

• (1) Motor with Cooling Sleeve