The ORCA Blitreme 3 21.5T Sensored Brushless Motor is a competition-grade stock motor engineered for smooth power delivery, outstanding efficiency and consistent performance in regulated racing classes.

Its hand-wound 21.5-turn stator delivers predictable acceleration and excellent throttle control, making it ideal for technical racing where maintaining momentum and driving clean lines are essential. Sensored operation provides accurate rotor-position feedback to the ESC for smooth startup and precise control throughout the RPM range.

The lightweight CNC-machined aluminium housing features multiple cooling openings to improve airflow and help manage operating temperatures. Adjustable timing allows racers to tune the motor’s power delivery, RPM and efficiency to suit their vehicle, gearing and track conditions.

The standard RT23HS12548 12.5mm rotor provides a carefully balanced combination of torque and RPM. Selected approved optional rotors may also be fitted where permitted by the relevant racing regulations.

This version uses the current non-epoxy stator configuration and remains listed for ROAR 21.5T stock-class competition. It is also offered as an EFRA-specification motor for regulated on-road and off-road racing.

Key Features

• Competition-grade 21.5T stock racing motor
• Current non-epoxy stator design
• Sensored brushless operation
• Hand-wound stator
• Standard 540-size configuration
• Adjustable motor timing
• CNC-machined aluminium housing
• Multiple cooling openings
• Smooth and predictable throttle response
• Excellent efficiency and consistency
• Standard 12.5mm ORCA rotor
• Compatible with selected approved optional rotors
• Suitable for regulated on-road and off-road stock classes
• ROAR-approved configuration

Specifications

• Brand: ORCA
• Series: Blitreme 3
• Part number: MO24BT3U215A
• Motor type: Sensored brushless
• Motor class: Stock competition
• Turns: 21.5T
• Motor size: Standard 540
• Stator: Hand wound
• Stator construction: Non-epoxy
• Timing: Adjustable
• Standard rotor: RT23HS12548
• Rotor diameter: 12.5mm
• Optional approved rotor: RT25H2599
• Approximate weight: 148g
• Approval: ROAR listed
• Application: 1/10 scale competition RC vehicles

Suitable Applications

• 1/10 stock touring cars
• 1/10 FWD touring cars
• 1/10 competition pan cars
• 1/10 2WD racing buggies
• 1/10 4WD racing buggies
• Carpet and asphalt racing
• Indoor and outdoor off-road racing
• Regulated 21.5T stock classes

Package Contents

• 1 × ORCA Blitreme 3 21.5T Sensored Brushless Motor

Required to Complete

• Compatible sensored brushless ESC
• Suitable competition battery
• Sensor cable
• Motor wires and connectors
• Suitable pinion gear

Always confirm the motor, rotor and timing regulations for your racing class. Correct gearing and regular temperature checks are recommended during initial setup.