Firma 2838 4500Kv Brushless Motor

The Firma 2838 4500 KV Brushless Motor is designed as a direct replacement for ARRMA GROM BLX 4×4 vehicles. It features a precision 4‑pole inrunner rotor, CNC‑machined aluminium housing, insulated high‑purity copper windings and a hardened alloy steel 3.17 mm output shaft for superior durability and efficiency.

Features

• Specifically engineered for ARRMA GROM BLX 4×4 platform
• Highly efficient 4‑pole low‑cog rotor design
• CNC‑machined aluminium can with precision ball bearings
• Hardened alloy steel shaft (3.17 mm / 1/8 in) for durability
• Suitable for 2S to 3S LiPo power systems

What’s in the box

• (1) Company-branded Firma 2838 4500 KV Brushless Motor

Need to complete

• Compatible smart or standard brushless ESC (not included)
• 2S–3S (7.4–11.1 V) LiPo battery with 3.5 mm bullet connectors
• Full-range transmitter and receiver

Specifications

• KV rating: 4500 Kv
• Input voltage: 2S–3S LiPo (7.4–11.1 V)
• Connector type: 3.5 mm bullet
• Motor type: Sensorless brushless inrunner
• Poles: 4
• Outer diameter: 23 mm (0.9 in)
• Length: 38 mm (1.5 in)
• Shaft diameter: 3 mm (0.13 in)
• Shaft length: 14 mm (0.55 in)