M120 datasheet
The working engine. 120 hp, honest numbers, published prices.
DRY MASS 62.4 KGTBO 2 000 HPOWER 120 HPFUEL MOGAS 91E10
- Document
- DS-M120-2026
- Revision
- C
- Issued
- 2026-07-01
- Sheets
- 1 of 1
Type dataM120 · 2026
- Configuration
- Flat-four, horizontally opposed
- Displacement
- 1,340 cc
- Max power
- 120 hp @ 5,500 rpm
- Cruise power (75%)
- 90 hp @ 4,900 rpm
- Reduction drive
- 2.43 : 1 helical, torsional damper
- Dry mass
- 62.4 kg
- TBO
- 2,000 h
- Fuel
- 91E10 mogas / UL91 / 100LL
- Fuel burn (75%)
- 17.1 L/h
- Cooling
- Liquid-cooled heads, air-cooled barrels
- Ignition & injection
- Dual-channel FADEC, auto altitude compensation
- Alternator
- 600 W integrated PM, dual regulators
- Propeller flange
- SAE-1 / hydraulic governor pad optional
Performance and installation
Power and torque, measured on the cellCELL DATA
PowerTorque
Installation envelopeFWF
Commercial terms
CommercialEX-WORKS FILTON
- Firewall-forward price
- $24,800
- Deposit to hold a build slot
- $2,500 (refundable)
- Warranty
- 3 yr / 1,000 h, whichever comes later
- Documentation
- Free — manuals, ICD, parts catalog
Martlet Aero Ltd, Filton, Bristol. Specifications subject to service-letter revision; data taken from published test-cell records.
