Motor GEPRC GEP-GR1408 3500kv

The GEPRC GEP-GR1408 Brushless Motor is a high-efficiency, powerful motor designed specifically for 3-inch FPV drone setups operating on 2S to 4S LiPo batteries. Featuring precision CNC-machined 7075 aviation aluminum construction, a streamlined heat-dissipating housing, and N52H curved magnets with an ultra-tight 0.15 mm air gap, it generates high torque and smooth throttle responsiveness. Available in multiple KV variants and CW/CCW thread directions, it achieves up to 648 g of thrust when paired with GEPRC 3042 tri-blade propellers.

Key Features

Streamlined CNC-machined 7075 aviation aluminum housing for reduced air resistance and structural durability

High-efficiency N52H curved arc magnets with an ultra-tight 0.15 mm air gap for enhanced torque

High-temperature enameled copper wire rated up to 180°C providing stable throttle output

Premium Japanese NSK bearings ensuring smooth high-RPM rotation with minimal vibration and noise

Enhanced thermal management structure reducing operating temperatures by up to 20%

Dynamic balance tuning on motor bell housing to eliminate high-speed vibrations

Available in both CW and CCW M5 shaft threading options with 5 mm aluminum flange locknuts

Supports 2S to 4S LiPo battery configurations, optimized for 3-inch prop builds

Specifications

Model: GEPRC GEP-GR1408

Available KV Ratings: 2500KV / 3500KV / 3750KV / 4100KV

Stator Dimensions: 14 × 8 mm

Shaft Diameter: 2 mm

Propeller Adapter Shaft Thread: M5

Motor Dimensions: Φ18.2 × 32 mm

Configuration: 9N12P

Magnet Type: N52H Curved Arc Magnets (0.15 mm air gap)

Bearing Type: Japanese NSK

Housing Material: CNC 7075 Aviation Aluminum

Input Voltage: 2S–4S LiPo (7.4V–16.8V)

Wire Gauge & Length: 24AWG, 100 mm (180°C silicone rubber leads)

Propeller Compatibility: 3-inch propellers (optimized for GEPRC 3042 tri-blade)

Weight: 15.2 g (excluding wires)

Performance Metrics

GEP-GR1408 4100KV Thrust Output: Up to 648 g max thrust using GEPRC 3042 propellers

Optimal Throttle Curve: Peak efficiency and power delivery achieved around 70% throttle