Speed 21XZ-B Spec III 1/8 Scale .21 Buggy Engine
Speed 21XZ-B Spec III 1/8 Scale .21 Buggy Engine
Speed 21XZ-B Spec III 1/8 Scale .21 Buggy Engine
Discontinued | This Item is No Longer Available

Speed 21XZ-B Spec III 1/8 Scale .21 Buggy Engine

Item No.
OS Engines - OSMG2060
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Taking 1/8 power to the next level

If you thought the Spec II was special, wait until you experience the 21XZ-B Spec III! It's the evolution of a proven powerhouse that has been a multiple winner at races worldwide, with tweaks that enhance its performance and drivability. You'll even hear the difference in the engine’s roar when warming it up!
  • Enhanced low-to mid-range torque provides a great advantage on tracks that require lots of power
  • The cylinder liner features 3 scavenger ports and 3 exhaust ports, and works with the crankcase to deliver more power with less fuel consumption
  • The drop-in type outer head is lighter, with a lower CG
  • Still has popular 21XZ-B features such as a silicon-potted, DLC-coated crankshaft with pressed-in tungsten weights
  • Comes with an easy-tuning 21J carburetor with 6.5 mm restrictor

Product Specs

Bore
0.64 in (16.3 mm)
Power Type
Glow
Plug Type
Turbo P-3 Glow Plug
Stroke
0.66 in (16.8 mm)
Displacement
0.213 cu in (3.49 cc)
Product Length
2.53 in (64.5 mm) from backplate to front bearing
Product Height
3.4 in (86.5 mm) from bottom of crankcase to top of cylinder head
RPM Range
4,000 - 42,000 rpm
Crankshaft Threads
UNF1/4-28
Cylinders
Single
Product Width
1.77 in (45 mm)
Total Weight
12.5 oz (353 g)
Cylinder Type
Three each scavenger and exhaust ports
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