FPVCycle 21mm Motor - M3/M5 Prop Shaft

  • Sale
  • Regular price $18.99

The intended use of this motor is specifically for improved performance on sub 250g 5” crafts compared to other current options. The motor size is 2104 which will give you a noticeable control performance improvement over the popular 2004 size while weighing about the same thanks to the new lighter shaft design which is compatible with future M3 mount props and is fully compatible with existing M5 mount props.

Recommended Uses:


  • 21mm stator diameter, 4mm stator height
  • 12x12mm M2 mounting pattern (not flush mount)
  • ~15.5g with ~50mm length wires
  • ~14.6g with short cut wires
  • 24awg long silicone wire
  • 0.15mm Kawasaki High performance laminations
  • M3 grade 5 titanium prop shaft with M5 adapter
  • 3x8x4mm 693zz Japan ISC Custom bearings
  • 7075-T6 aluminum casing
  • 260℃ enamel coated single wrap oxygen-free copper windings

Customer Reviews

Based on 15 reviews
Jeff (Longmont, US)
Great power to weight combo!

I use these to power a spinning blade in a 150g combat robot and they are very powerful and light. The 3mm threaded full-length shaft makes them very robust.

MAgnus Turesson (Rockville, US)
Great M3 motor

Recommend, light, powerful, hope for more M3 propellers

J. (Barre, US)
Not good for 3in apex 4s (have 2300KV)

Was recommended to try these motors for my 3in apex. Bad idea. Not enough power / Apex frame is to heavy. I am sure they would be great on a 200g quad.

Philipp (Lakeland, US)
6S 4" Dynamo!

I'm using the 21mm 2300kV motors with 6S 650mAh and 850mAh batteries and absolutely love the flight time and performance! I'm more of a park racer and every time I fly I fall in love all over again with my build. I really love these motors and on a 4" 180g quad like mine, the performance on a 6S light weight battery is very enjoyable. Bob please don't ever stop making these 21mm 2300kV motors!!!

Francis (Burnaby, CA)
Good motor

Worth the money! Can't go wrong.