ProBuild Aircraft Ltd are the original and longest-running Official UK Distributor and UK Service Centre for GP Engines, supplying genuine factory-direct products with full manufacturer support, expert technical advice and access to genuine GP spare parts and accessories.

The Great Power GP-88 is a high-performance 88cc single-cylinder gas engine engineered for serious giant-scale RC aircraft pilots demanding exceptional power, reliability, and lightweight performance.

Producing an impressive 10 horsepower while maintaining an ultra-light overall weight of just 1980g, the GP-88 delivers outstanding power-to-weight efficiency for 33%–35% aerobatic aircraft and large-scale 2.5m–3.3m warbirds and scale models.

Designed with a dynamically balanced crankshaft and piston assembly, the GP-88 significantly reduces vibration despite its large-capacity single-cylinder design. This results in smoother running characteristics, improved reliability, and enhanced airframe longevity ideal for precision aerobatics, giant-scale freestyle flying, and scale warbird applications.

Supplied complete with ignition system and Pitts mufflers, the GP-88 provides everything required for installation straight out of the box. Featuring a proven Walbro WJ-71 carburettor, NGK CM-6 spark plug compatibility, and excellent throttle response, this engine delivers dependable performance across the full RPM range.

Despite its compact and lightweight design, the GP-88 produces power levels comparable to many larger 100–110cc engines, making it one of the most efficient giant-scale petrol engines available today.

As the oldest official UK distributor for GP Engines, Probuild Aircraft supplies genuine factory-direct engines with full UK warranty support, expert servicing, and access to Europe’s largest stock of GP spare parts.

Key Features

✅ Powerful 88cc single-cylinder petrol engine
✅ Produces up to 10 horsepower
✅ Lightweight design at only 1980g
✅ Dynamic balanced crankshaft and piston for reduced vibration
✅ Ideal for 33%–35% aerobatic aircraft
✅ Suitable for 2.5m–3.3m scale and warbird models
✅ Complete with ignition system and Pitts mufflers
✅ Proven Walbro WJ-71 carburettor
✅ Reliable NGK CM-6 spark plug compatibility
✅ Excellent power-to-weight ratio comparable to many 100–110cc engines
✅ Smooth throttle response and dependable operation
✅ Genuine UK-supported GP Engine with full spare parts backup

Perfect For

• Giant-scale aerobatic RC aircraft
  
• 33%–35% aerobatic models
  
• Large-scale warbirds and scale aircraft
  
• 2.5m–3.3m RC aircraft
  
• Pilots seeking lightweight high-power petrol engines
  
• Precision aerobatic and freestyle flying setups

Product Summary

The Great Power GP-88 is a premium 88cc single-cylinder petrol engine delivering outstanding lightweight performance, smooth operation, and exceptional power for giant-scale RC aircraft. With 10 horsepower output, low vibration design, and complete ignition and muffler package included, the GP-88 is an ideal choice for serious aerobatic and scale aircraft pilots.

Specifications

• Displacement: 88cc
  
• Bore: 53mm
  
• RPM Range: 1200–7700 RPM
  
• Output: 10 Horsepower
  
• Total Weight: 1980g
  
• Ignition Weight: 135g
  
• Pitts Muffler Weight: 345g
  
• Fuel Type: 92 Unleaded Petrol
  
• Fuel Mix Ratio: 40:1
  
• Carburettor: Walbro WJ-71
  
• Spark Plug: NGK CM-6
  
• Recommended Propellers
  
  • 26x10
    
  • 27x10

Included Items

• Great Power GP-88 Engine
  
• Electronic Ignition System
  
• Pitts Mufflers
  
• Mounting Hardware
  
• Instruction Manual

Why Buy From Probuild Aircraft

✅ Official UK GP Engines distributor
✅ Genuine factory-direct GP engines guaranteed
✅ Trusted by top international RC pilots
✅ Supporting RC pilots since 1993
✅ Full UK warranty and repair support
✅ Factory-appointed GP Engines service centre
✅ Europe’s largest stock of GP spare parts
✅ Fast UK shipping
✅ Expert technical support and aftersales service