This is the Thunder Power 21.5 Turn Z3R-S Stock Spec 540 Sensored Brushless Motor. Designed and developed from the ground-up, tested rigorously and race-proven in the hands of many of the worlds top racers including Paul Lemieux, Z3R 540 brushless motors are built to deliver maximum performance and reliability. From oval to touring, stadium to short course and everything in between, Thunder Power offers a Z3R 540 brushless motor that is perfect for any application. Z3R-S Stock Spec motors are available in 10.5T, 13.5T, 17.5T and 21.5T winds, all ROAR approved and ready to race at sanctioned events and beyond.
Z3R motors are easy to maintain and tune with a fully re-buildable design and are supported by a full line of replacement and option parts, including ROAR approved tuning rotors. Each motor is constructed from high-quality materials including a balanced, high-strength neodymium rotor, high-temperature coated copper wire and plated copper solder tabs for long life. While easy-to-set adjustable timing from 0ó50 degrees and fast-switching, high-temp sensors make it easy to maximize performance. Plus Z3R brushless motors are backed by Thunder Power RCís industry-leading 2-year warranty and 2-years of 50% off damage replacement program coverage!
- Re-buildable design for easy maintenance
- Balanced, high-strength neodymium rotor
- High-temp coated pure copper wire
- Plated copper solder tabs
- Fast-switching, high-temp sensors
# of Turns/Windings: 21.5
Timing: Adjustable (0-50 degrees)
Weight: 6.2 oz (176g)
Overall Diameter: 1.41 in (35.7mm)
Shaft Diameter: 0.125 in (3.18mm)
Overall Length: 2.07 in (52.5mm)