The Emax ECO II 2207 1700KV is EMAX’s fully redesigned 5-inch freestyle and racing motor — built from the ground up with a stronger, rounder bell architecture, upgraded N52SH arc magnets, and an EZO 9mm precision bearing. At 1700KV on 6S, it sits in the sweet spot for 5-inch builds: enough torque for powerful freestyle manoeuvres, linear enough for predictable throttle control in racing situations.

ECOII 2207  1700KV

Why choose the ECO II 2207 1700KV?

The original ECO series made quality brushless motors accessible at an entry-level price. The ECO II takes that further — moving from N48 to N52SH arc magnets tightens the air gap and improves torque output meaningfully, while the new rounded bell design adds crash durability at the motor’s most vulnerable points. The EZO 9mm bearing keeps vibration low across the full RPM range, supporting cleaner gyro data and better-performing RPM filtering in Betaflight. Pair it with our AIO flight controller and ESC range for a complete 5-inch build.

This listing is for the 1700KV variant — the most versatile winding in the ECO II 2207 lineup, suited to both 4S and 6S power systems.

Key features

N52SH curved arc magnets

Upgraded from the N48 magnets used in the original ECO series, N52SH arc magnets create a tighter air gap and generate stronger magnetic flux — delivering more torque, higher achievable RPM, and crisper throttle response at all throttle positions.

Redesigned rounded bell

The ECO II’s all-new rounded bell architecture adds thicker material at critical stress points — meaningfully improving crash durability compared to the original ECO motor, where the bell attachment points were a known weak spot.

EZO 9mm precision bearing

The EZO 9mm bearing keeps the motor running smoothly with minimal vibration across the full RPM range — supporting cleaner gyro data, better RPM filtering, and longer motor lifespan compared to standard bearings.

Mirror-polished finish

A fully mirror-polished surface gives the motor a premium look while also helping resist surface oxidation over repeated use.

Multi-strand winding + 20AWG silicone wire

Multi-strand winding improves flexibility and current distribution within the motor, while the 120mm 20AWG silicone wire provides plenty of length for clean routing in most 5-inch frames.

Specifications — 1700KV

What’s in the box

• 1x Emax ECO II 2207 1700KV brushless motor
• 5x M3×8 screws
• 5x M3×7 screws
• 5x M3×6 screws
• 1x aluminium M5 nylock nut
• 1x washer and screw for shaft

Recommended for

• 5-inch freestyle builds
• 5-inch racing builds
• 4S and 6S LiPo power systems
• Pilots wanting proven, affordable motor performance

Build compatibility

The ECO II 2207 uses a 16×16mm M3 mounting pattern, fitting the majority of standard 5-inch freestyle and racing frames. Pair it with components from our FPV VTX collection for a complete build.