21XZ-B Speed Spec II Gold Edition Engine

The 21XZ-B Speed Spec II has set the gold standard of 1/8 scale racing engines. Now, it’s available in a special Gold Edition to commemorate O.S.’s 80th anniversary.

A gleaming gold cylinder head and carb insert makes it extra-attractive for collectors, while the legendary O.S. performance makes it a must for high-octane racing!

  • A lighter crankshaft, with DLC coating, Tungsten weighting and silicone-filled intake passage
  • Modified piston and con rod that reduces overall weight
  • Outer head with V-shaped fins for lower CG and more efficient cooling.
  • Dual-adjustable 21J carburetor for smoother acceleration and better fuel mileage
  • Available with or without the T2090SC pipe set.

For more information, visit www.osengines.com


Sylvain Lafrance

Sylvain Lafrance

Hello, my name is Sylvain Lafrance and I am the man behind MyRCBox.com. I have bought my first hobby grade RC in the early 90s. With years, what that started as a simple hobby, quickly became a strong passion. I am so much passionate about R/C that I have created MyRCBox.com in 2006 to share my experiences with R/C products that I use for racing and bashing. Follow me !

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