The ORCA Modtreme 4 M4 4.5T Sensored Brushless Motor is a next-generation competition motor engineered for the extreme power, precision and efficiency required in modified-class RC racing.

Developed for high-performance 1/10 scale touring cars and off-road racing vehicles, the Modtreme 4 combines a hand-wound stator with an optimised 12.1mm rotor and sensored operation. This provides powerful acceleration, smooth throttle response and accurate control throughout the RPM range.

The redesigned motor housing improves cooling while reducing weight by approximately 3% compared with the previous generation. Moving the solder terminals inward shifts the motor’s mass closer to the vehicle’s centreline, improving chassis balance and allowing faster left-to-right transitions through technical sections of the track.

Factory-installed titanium motor screws further reduce weight at the highest point of the motor while delivering excellent strength and durability. The Modtreme 4’s standard 540-size dimensions make it suitable for a wide range of competition 1/10 scale chassis.

With its aggressive 4.5-turn winding, this motor is intended for experienced racers running modified classes. It should be matched with a suitable high-current sensored ESC, quality competition battery and carefully selected gearing.

Key Features

• Powerful 4.5T modified-class winding
• Sensored brushless operation
• Hand-wound competition stator
• Standard 540-size motor
• Optimised 12.1mm rotor
• Smooth and precise throttle response
• High RPM and strong acceleration
• Approximately 3% lighter than the previous generation
• Redesigned housing for improved cooling
• Inward-positioned solder terminals
• Motor mass positioned closer to the chassis centreline
• Improved weight distribution and cornering response
• Factory-installed titanium motor screws
• Suitable for professional on-road and off-road racing

Specifications

• Brand: ORCA
• Series: Modtreme 4 M4
• Part number: MO26MTM445T
• Motor type: Sensored brushless
• Motor class: Modified competition
• Turns: 4.5T
• Motor size: Standard 540
• Stator: Hand wound
• Rotor diameter: 12.1mm
• Standard rotor: RT26M412133
• Motor screws: Titanium
• Application: 1/10 scale competition RC vehicles

Suitable Applications

• 1/10 modified touring cars
• 1/10 competition pan cars
• 1/10 2WD and 4WD racing buggies
• High-grip carpet racing
• Asphalt racing
• Competition off-road racing

Package Contents

• 1 × ORCA Modtreme 4 M4 4.5T Sensored Brushless Motor

Required to Complete

• High-current sensored brushless ESC rated for a 4.5T motor
• Suitable 2S competition LiPo battery
• Compatible sensor cable
• Motor wires and connectors
• Correct pinion gear for the vehicle and track conditions

This is an extremely powerful modified racing motor intended for experienced users. Always monitor motor and ESC temperatures and select gearing appropriate for the vehicle, track and operating conditions.