Best Props for DA-120, GP-123, and DA-170
In the world of extreme 3D, your prop is your handshake with the air — it’s where power, precision, and personality all meet. Choosing the right propeller isn’t just about size; it’s about matching your engine and flying style.
This 2025 guide breaks down the most popular and proven propeller combinations for the three most dominant engines in giant-scale 3D: the DA-120, GP-123, and DA-170.
DA-120 – The All-Around Champ
This engine works best between 27″ and 29″ props depending on airframe and tuning.
Top Prop Choices:
| Propeller | Style | Notes |
|---|---|---|
| Falcon 28×9.5 Carbon | XA & 3D | Best blend of pull and spool-up speed |
| Mejzlik 28×10 | Freestyle & IMAC | Slightly more pitch for downline control |
| Falcon 27×11 | Precision + smooth 3D | Higher pitch = better big-air stability |
| Biela 28×10 | Budget option | Smooth and durable, not as snappy as Falcon |
Best Overall Pick (2025): Falcon 28×9.5 Carbon – it’s the prop most seen at Joe Nall, XFC, and in pro pilot videos. Great balance of thrust, braking, and flicks.
GP-123 – The XA Beast
GP engines like slightly higher pitch and diameter. This motor loves 28–30” props with aggressive bite.
Top Prop Choices:
| Propeller | Style | Notes |
|---|---|---|
| Falcon 29×9.5 Carbon | Hard XA, pop-tops, blenders | Delivers maximum low-end punch |
| Mejzlik 29×10 | XA + big air | Adds braking on downlines |
| Falcon 28.5×9.5 | Midweight airframes | Keeps it snappy without bogging |
| Biela 29×10 | Strong hover pull | Good choice for heavier planes on this motor |
Best Overall Pick (2025): Falcon 29×9.5 Carbon – this prop makes GP-123 scream on uplines and tumble like crazy on pop-tops.
DA-170 – The Big Dog
This engine can swing 30–32″ props, and loves pitchy, slow-spinning blades for maximum authority.
Top Prop Choices:
| Propeller | Style | Notes |
|---|---|---|
| Falcon 30x13N Carbon | Freestyle XA + slow 3D | The new “N” pitch gives strong low-speed control |
| Mejzlik 31×12 | Big air & IMAC blend | More stable in wind, helps with vertical lines |
| Biela 30×12 | Budget + strong pull | Solid value; not quite as precise as Falcon/Mejzlik |
| Falcon 32×10 | Floaty 3D | Slow spins, low throttle hover stability |
Best Overall Pick (2025): Falcon 30x13N Carbon – nothing else combines grip, float, and stop like this one. It’s what many top pilots run in 122″–126″ monsters.
Quick Tip: Wood vs. Carbon
- Carbon Props:
More precise, stiffer, smoother throttle transition. Cost more, but worth it for serious 3D. - Wood Props:
Softer in feel, more forgiving on setup. Great for beginners or test platforms.
Final Thoughts:
If you’re flying:
- DA-120: Go Falcon 28×9.5 or Mejzlik 28×10.
- GP-123: Falcon 29×9.5 is your huck weapon.
- DA-170: Falcon 30x13N is the undisputed king for 120″ airframes.
The right prop can give your plane the authority to stop on a dime, rip sideways, or float into a hover. Don’t underestimate how much that blade shapes your style.
