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VS RACING VSB04 View larger




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390,83 €

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The new and exclusive VS Racing VSB04 long stroke .21 off-road engine is based on the very powerful O.S. Speed 21XZ-B specII and is an extraction of the world famous OS Max precision and technology together with some additional 'Rody' touch and development, equipped with a VS Spec combustion chamber with o-ring to protect this area from dirt, a 5-port sleeve and additional DLC coating on the whole crankshaft, a rear-cover with "pushplate". 

The VS Racing VSB04 is suited for high competition 1/8scale off-road racing.
This engine is intended for "EXPIERIENCED" users. 


  • Long Stroke
  • Unique and Specific 5-Ports design
  • CNC machined flat piston
  • 14mm turbo crankshaft, balanced, lightened and silicone paste,DLC,'Rody'
  • Competition Conrod
  • Turbo combustion chamber VS Spec.
  • 14mm high-speed main bearing
  • 7mm high-speed front bearing with rubber protection
  • VS Spec. lightweight cooling head
  • VS Spec. Underhead and additional o-ring
  • VS Spec. Crankcase
  • VS Spec. rear-cover with 'pushplate'
  • VS spec. aluminum lightweight slide carburettor with double adjustment
  • 6.5mm aluminum restrictor

This engine is developed to find the best balance between performances/relaiability and costs.


Type :Off-Road
Contents :.21(3.49cc)
Bore :16.27mm
Stroke :16.80mm
Crankshaft :14mm SG/SPT (buggy) DLC
Main-Bearing :14mm HighSpeed
Front-Bearing :7mm HighSpeed 
Cylinder :ABC
Ports Intake :5
Exhaust Port :1
Carburator :Neck 15mm VS Spec.
Cooling-Head :Light Off-Road
Underhead :VS Spec for conical(Turbo) glowplug.
RMP :Max Power @ 30K RPM (4-40K RPM range)
Weight :355Gr


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