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OS 21XZ-B Speed Spec II Gold Edition Engine
Availability: 0
Code: OSMG2047

Go for the gold with these limited-time power plants!

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 T2060SC pipe set.
Stock Number: OSMG2046 Speed 21 XZ-B Spec II Engine w/T2060SC Pipe
Stock Number: OSMG2047 Speed 21 XZ-B Spec II Gold Edition Engine
Displacement: 0.213 cu in (3.49 cc)
Output: 2.61 hp @ 34000 rpm
RPM Range: 4000-42000
Bore: 0.641 in (16.27 mm)
Stroke: 0.661 in (16.8 mm)
Weight: 12.52 oz (355 g)
Includes: 21J carburetor, 6 mm and 7 mm carb restrictors, P3 glow plug, exhaust seal and dust cap set
Requires: glow fuel
OSMG2047 Also Requires: tuned pipe and manifold