Firma 2100Kv Brushless Sensored Crawler Motor

The Spektrum Firma 2100 Kv Sensored Brushless Crawler Motor is built for high-torque trail and scale crawling. Featuring a low‑cog 4‑pole 8‑magnet rotor, FOC sensored control, durable alloy steel shaft, and waterproof design—it delivers smooth control and precise power in extreme conditions.

Features

• Low‑cog 4‑pole, 8‑magnet rotor design for consistent low-speed torque
• FOC sensored control with integrated magnetic encoder for precise throttle response
• CNC‑machined aluminium housing with insulated high‑purity windings
• Hardened alloy steel shaft (3.175 mm / 1/8") designed for standard pinions
• Pre‑installed 3.5 mm gold‑plated bullet connectors
• Compact 540‑size footprint for direct installation in many 1/10 scale crawler platforms

What’s in the box

• Firma 2100 Kv Sensored Brushless Crawler Motor (sensor lead and mounting hardware)
• Product manual

Needed to complete

• Spektrum Firma 60 A Sensored Smart Crawler ESC (required for optimal performance)
• 2 S or 3 S LiPo battery with EC3/IC3 connector
• Full‑range Spektrum transmitter compatible with crawler mode

Specifications

• Application: 1/10 scale rock crawlers, rock racers and trailers
• KV rating: 2100 Kv
• Poles: 4 (8‑magnet rotor)
• Max continuous current: approx. 38 A
• Input voltage: 2–3 S LiPo (7.4–11.1 V)
• Power range: 250–499 W
• Connector: 3.5 mm gold‑plated bullet
• Shaft diameter: 3.175 mm (1/8″)
• Outer diameter: 36 mm (1.42″)
• Length: 58 mm (2.27″)
• Reverse capable: Yes (via compatible ESC)
• Technology: Sensored brushless with magnetic encoder
• Water resistance: Yes