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50SX-H Hyper Ringed .50 Helicopter Engine

Item No. OSMG1951
50SX-H Hyper Ringed .50 Helicopter Engine
Brand Logo
5 out of 5 Customer Rating

50SX-H Hyper Ringed .50 Helicopter Engine

Item No. OSMG1951
$311.16
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Product Details

Key Features
  • Ideal for use in any 50 class helicopter
  • Head design offers improved combustion efficiency for stable hovering and aerobatic flight
  • Large 0.39" (10mm) diameter carburetor intake for greater running stability
  • Two year limited warranty
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In The Box
  • One O.S. Max .50 SX-H Helicopter Engine with Hyper Cooling Head
  • 60LH carburetor
  • decal sheet
  • #8 glow plug
  • instruction manual
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Needed to Complete
  • 10% to 30% nitro Fuel with at least 18% lubricant (Helicopter Mix)
  • Starting equipment
Quick Links
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A "Hyper" engine for hyper heli performance!

The 50SX-H Ringed Hyper is ideal for 50-class helis, with improved combustion efficiency for super-stable hovering and aerobatics.


O.S. Two Year Limited Warranty
  • For over-the-top flying excitement, the 50SX-H Ringed Hyper engine is the clear favorite!
  • Actually mounts in the same space as a .30-size application.
  • The 60LH carburetor features 1.5mm more bore, to increase overall power.
O.S. 50SX-H Ringed Hyper Heli - heat sink head
Besides good looks and excellent cooling, the 50SX-H Ringed Hyper engine's machined blue alumite heat sink head also boosts combustion efficiency for more power stability.
O.S. 50SX-H Ringed Hyper Heli - carburetor
The Hyper version weighs less than the 50SX-H, but delivers more horsepower for higher rotor speeds.

Product Specifications

Manufacturer # 15550
Displacement 0.49 cu in (8.17 cc)
Product Length 3.4" (85.7mm) from backplate to front bearing
Crankshaft Threads UNF1/4-28
Bore 0.866 in (22mm)
Cylinders Single
Product Width 2.0 in (52 mm) at mounting tabs
Plug Type O.S. #8
Engine (Only) Weight 14.33 oz (406 g)
Crankshaft Type Threaded
Power Type Glow
Stroke 0.847 in (21.51 mm)
Product Height 3.6 in (92.3 mm) bottom of crankcase to top of cylinder head
RPM Range 2,000 - 20,000 rpm
Product Weight 14.33oz (405.4g)