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  • Updated laser graphics on the cooling head
  • High cooling performance and lightweight outer head
  • O-ring embedded inner head
  • Comes with 21M2 (B) carburettor, which is popular with many racers for maximum performance
  • The cylinder with 7 ports and piston have a new design with cooling holes added to the bottom of the exhaust with the newly designed crankcase

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OS Engines Speed R21 Euro II .21 Nitro On Road Engine

SKU: OSM1DR00
$599.99
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O.S. Engines have introduced their updated version of their R21 Euro 1/8th On-Road Nitro engine with the R21 Euro II. It inherits the smooth and easy-to-use feeling of its predecessor, with new features to improve performance.

Looking for spare parts or upgrades?

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OS Engines Cylinder and Piston Assembly, B2105, Clearance
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OS Engines Inner Head with O-Ring, B21 Ongaro, Clearance
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