Firma 1250Kv Brushless Motor 6.5mm Bullet 5mm Shaft

The Spektrum Firma 1250 KV Brushless Motor (6.5 mm bullet connector, 5 mm Safe‑D shaft) is engineered for giant‑scale and high‑performance applications such as 1/5–1/7 scale vehicles. With a low‑cog 4‑pole rotor, CNC‑machined aluminium housing, insulated copper windings, and precision bearings—it's matched to the Firma 160 Smart ESC for maximum power delivery up to 4190 W on 8S LiPo.

Features

• Low‑cog 4‑pole, 8‑magnet inrunner design
• CNC‑machined aluminium housing with enclosed copper windings
• Safe‑D 5 mm hardened alloy steel output shaft (3/16″)
• Pre‑installed 6.5 mm gold‑plated bullet connectors
• Designed to work seamlessly with the Firma 160 Smart ESC for 8S power output

What’s in the box

• Spektrum Firma 4685‑1250 Kv sensorless brushless motor with bullet leads
• Instruction sheet

Needed to complete

• Suitable ESC such as the Spektrum Firma 160 Smart ESC
• LiPo battery between 4S–8S (up to 35.2 V)
• Compatible surface transmitter and receiver system

Specifications

• KV rating: 1250 KV
• Motor size: 4685 (46 mm diameter × 84 mm length)
• Input voltage: 12–35.2 V (up to 8S LiPo)
• Output power: up to 4190 W
• Continuous current: up to 180 A
• Efficiency: approx. 90 %
• Number of poles: 4
• Construction: Sensorless brushless inrunner
• Shaft diameter: 5 mm (3/16″ Safe‑D compatible)
• Connector type: 6.5 mm bullet
• Product weight: approx. 618 g (22.4 oz)
• Recommended ESC: Spektrum 160 Smart ESC