A perfect replacement for your current .50 size engine. Just bolt in and see 30% more power in your 50 size helicopter. Fits most 50 size helis - usually with no modifications. Manufactured from high grade aircraft billet aluminum. This engine has been extensively tested by many top pilots and really makes a 50 size helicopter come alive.

Displacement: 0.59 cu in (9.66 cc)

Bore: 0.945 in (24 mm)

Stroke: 0.847 in (21.5 mm)

Exhaust Port: 42mm spacing 4mm screws (OS 91 Style)


Recommended RPM: 19,000 - 20,000
Output: 2.48 hp @ 18,000 rpm
Weight: 16.8 oz (478 g)
Includes: 60LH *OS Carburetor
Requires: #8 Glow Plug, Muffler, Drive Hub

Recommended Pipes - The KME engine requires a 90 size pipe. KME recommend the following pipes for best performance:

- Hatori SB 18 or 20

- Outrage 90 XL (OS bolt pattern) as tested by Henry C.

- Align OS 90 Pipe