Polini Thor 190 HF – 29 HP High-Performance Air-Cooled Paramotor Engine

from $259.99

Built for Performance. Engineered for Reliability.

The Polini Thor 190 HF is a lightweight, compact 2-stroke engine engineered for pilots who demand reliability, power, and innovation. Designed using advanced 3D modeling and flow simulation, it features Polini’s exclusive HF Cooling System and Spark Cooling System to maintain stable performance in the most demanding flight conditions.

With 193cc of displacement, up to 29 HP @ 8,100 RPM, and a base weight as low as 30 lbs, the Thor 190 HF is ideal for foot-launched paramotors and single-seat ultralight applications.

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Built for Performance. Engineered for Reliability.

The Polini Thor 190 HF is a lightweight, compact 2-stroke engine engineered for pilots who demand reliability, power, and innovation. Designed using advanced 3D modeling and flow simulation, it features Polini’s exclusive HF Cooling System and Spark Cooling System to maintain stable performance in the most demanding flight conditions.

With 193cc of displacement, up to 29 HP @ 8,100 RPM, and a base weight as low as 30 lbs, the Thor 190 HF is ideal for foot-launched paramotors and single-seat ultralight applications.

Engine Type2-stroke, single-cylinder
Displacement193 cc
Bore x Stroke2.52" × 2.36" (64 mm × 60 mm)
Max Power Output29 HP @ 8,100 RPM
Max Static Thrust183 lbs with 51" propeller
Fuel Consumption~0.71 gal/hr (2.7 L/hr)
CoolingForced air with HF and Spark Cooling Systems
StarterManual Flash Starter (Electric optional)
Gear ReductionBelt drive, 2.83:1 ratio
CarburetorWalbro WB37
Air FilterAir box with tuned inlet
IgnitionInductive electronic
ClutchOptional dry centrifugal clutch
Prop RotationCounterclockwise
Fuel TypeUnleaded 95 octane (E5) or 100LL AVGAS with 2.5% synthetic oil
Weight Range30–37.5 lbs (13.6–17 kg)
MountingCompatible with Thor 80, 130 EVO, 200 HF, 250
Made In100% Italy

🔥 HF Cooling System – Advanced Heat Management

The HF Cooling Shroud is redesigned for maximum airflow, improving heat dissipation and airflow to the cylinder and propeller. Paired with Polini’s Spark Cooling System (SCS), this reduces Exhaust Gas Temperatures (EGT) by up to 212°F (100°C) and lowers plug-area temps by up to 122°F (50°C), protecting the engine under prolonged load.

🧠 Cylinder Head & Combustion

  • High-compression combustion chamber for optimized flame propagation

  • Gilnisil-coated aluminum cylinder with nickel-chrome liner

  • Gravity-cast, high-silicon alloy piston with dual 1 mm chrome/nitride steel rings

  • Delivers strong performance with low friction and long wear life

⚙️ Belt Drive Transmission

  • 2.83:1 gear ratio via belt transmission

  • Custom tension-bearing supports lateral loads 10x greater than standard

  • Special belt compound for reduced maintenance and improved grip

  • Engineered crankshaft reduces vibration and wear

🔩 Crankshaft & Bearings

  • Precisely balanced rotating weights

  • High-grade steel with thermal treatment

  • Top-tier bearings rated for heavy transverse loads

  • Designed to minimize unbalanced mass and vibration during flight

🔊 Exhaust System

  • Hand-built, dual-section expansion exhaust

  • Compact, aerodynamic, and vibration-resistant

  • Mounted with spherical joints and rubber dampers for extended lifespan

  • Optional lightweight titanium version available

🥤 Fuel System & Carburetion

  • Tuned Walbro WB37 carburetor for consistent power at 8,100 RPM

  • Dedicated airbox with noise-dampening inlet holes

  • Optimized atomization for smooth throttle response and efficient combustion

🧩 Compatibility & Mounting

The Thor 190 HF uses the standard Polini Thor mounting pattern, shared with models like the Thor 80, 130 EVO, 200 HF, and 250. This ensures:

  • Drop-in replacement compatibility

  • Faster installation

  • Easier upgrades or maintenance

  • Lower frame development costs for manufacturers

⚡ Starter Options

  • Manual Flash Starter (standard) – durable carbon steel build, ergonomic grip

  • Electric Starter (optional) – includes battery, relays, and 12V output

  • Centrifugal Clutch (optional) – improves ground safety and idle handling