The Ultimate Lightweight 50cc Aerobatic Machine

The Extreme Flight 85" Extra 300 EXP has arrived – and it’s everything 50cc pilots have been waiting for!
Purpose-built for the popular 50cc gas engine class, this brand-new design combines precision, agility and power in a lightweight, composite-reinforced airframe that delivers performance far beyond its size.

The 85" Extra is precise, agile, and aggressively responsive, yet remains stable and forgiving at all speeds. With lower rates it becomes a smooth and relaxed sport flyer; switch up the rates and it transforms into a true 3D and XA monster with unlimited vertical capability.

Designed using advanced materials including carbon-fibre wing spars, landing gear, tailwheel assembly, wing and stab tubes, the 85" Extra is strong, rigid, yet exceptionally light. Pre-hinged and gap-sealed surfaces make assembly simple – most pilots will have it flying after just a few evenings of relaxed workshop time.

It’s the perfect airframe to bring your 50cc engine back to life – or to enjoy with a high-powered 12S electric setup. Either way, the 85" Extra 300 EXP offers true Extreme Flight precision and performance in every manoeuvre.

Key Features

✅ Designed specifically for 50cc petrol engines or XPWR 40cc electric power
✅ Carbon-reinforced lightweight structure for maximum strength
✅ Pre-hinged and sealed control surfaces for quick, precise assembly
✅ Carbon landing gear, tailwheel and tube assemblies
✅ Two-piece removable stabs with internal elevator servos
✅ Genuine Oracover / Ultracote covering in vivid, high-visibility schemes
✅ Competition-grade hardware with genuine DuBro ball links included
✅ Suitable for precision, sport, 3D and XA aerobatics

Perfect For

• 50cc engine owners looking for a modern airframe

• Pilots wanting to bridge between 74” and 91” classes

• Intermediate to advanced 3D/XA flyers

• Anyone seeking maximum performance in a portable, easy-to-transport size

SPECIFICATIONS

Wingspan: 85.25 in (2159 mm)
Length: 85.25 in (2159 mm, incl. spinner)
Wing Area: 1375 sq in
Weight: 16 – 16.5 lbs (7.3 kg)
Spinner: 4" EF Carbon Spinner (gas or electric)

Power System Options

🔥 Gas Setup

• Engine: Desert Aircraft DA-50 or DLE-55

• Prop: Carbon 23×8

• Fuel System: FlowMaster 17 oz. tank & 2M tubing

• Accessories: EF Magnetic Fuel Dot

⚡ Electric Setup

• Motor: XPWR 40cc or Dualsky GA6000

• Standoffs: Blazing Star XXL

• ESC: Castle Creations Edge HV-120 (or HV-160 for max performance)

• Battery: 12S (2 × 6S 4000–5000 mAh LiPos)

• Prop: 21×10 or 22×10 Beechwood electric

Recommended Radio & Servos

• Servos: 5 × full-size, metal-gear high-torque (400+ oz-in)

  • Savox SV-1270MG recommended for main controls

  • Savox SB-2272MG or similar for throttle

• Servo Arms:

  • 2 × 1.5” (Ailerons)

  • 2 × 2” (Elevators)

  • 1 × 3” double arm (Rudder)

• Servo Extensions:

  • 2 × 6” (Rx → Ailerons)

  • 2 × 12” (Ailerons)

  • 2 × 48” (Elevators)

  • 1 × 24” (Throttle)

Additional Items

• EF anodised 3 mm washer set

• EF Velcro straps (black, blue or red)

• EF servo extension holders

• EF servo mounting screws

• Pilot X (¼ scale, optional – not included)

Covering / Colour Scheme

• High-visibility Yellow / Red / Blue Oracover scheme with contrasting underside

• Pre-applied graphics and professional Ultracote finish

Why Buy from Probuild Aircraft

✅ Official UK Extreme Flight Distributor
✅ Expert technical support and setup advice
✅ Fast UK and international shipping
✅ Genuine parts and accessories always in stock
✅ Trusted RC specialists since 1993