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Ultimate Racing M5S 5-port .21 Ceramic Racing Engine
Ultimate Racing M5S 5-port .21 Ceramic Racing Engine
Ultimate Racing M5S 5-port .21 Ceramic Racing Engine
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Ultimate Racing M5S 5-port .21 Ceramic Racing Engine

Regular price
$459.99
Sale price
$459.99
Regular price
$469.99
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This is the Ultimate M5S based on the OS B2103 Type R engine. This 5-port long-stroke engine offers great power at medium-high speeds. The cooling head, the crankcase cover plate and the carburetor feature a new design. The new DLC-coated crankshaft has two tungsten counterweights for smooth rotation and better balancing. It comes with ceramic rear bearing, the 22E carburetor and an O-ring under the cooling head for reducing vibration and preventing dust from entering the engine.

This engine has been developed for medium to high speed tracks.

Features:

  • The long-stroke off-road engine put a high value on beasty power in mid-high
  • speed range.
  • The cooling head, carburetor, crankcase cover plate are designed new.
  • The new DLC-coated crankshaft has two tungsten counterweights for smooth rotation and better balancing.
  • Ceramic rear bearing.
  • O-ring under the cooling head for reducing vibration and preventing dust from entering the engine.
  • A newly designed 22E carburetor for producing high power


Technical specifications:

  • Displacement 3.49cc
  • Bore 16.27mm
  • Stroke 16.80mm
  • RPM 4000-42000 rpm
  • Max output 2.64hp/34000 rpm
  • Weight 352gr
  • Recommended exhaust: UR352141 or UR352142
  • Port 5-port