O.S. Speed 21XZ-B Spec III Buggy & GT Touring Car Engine

O.S. Speed 21XZ-B Spec III Buggy & GT Touring Car Engine

From O.S. Engine:

The Speed lineup of 21-size engines has enjoyed numerous racing successes, and that same O.S. expertise is evident in these latest powerhouses. Both retain many of the cutting-edge innovations that have made Speed 21 engines so dominant, such as a lightweight outer head with a lower CG. Find out more by visiting osengines.com.

Speed 21XZ-B Spec III

  • Enhanced low- to middle-range torque for tracks that require lots of power
  • Cylinder liner features 3 scavenger ports and 3 exhaust ports, delivering more torque with less fuel consumption
  • Comes with an easy-tuning 21J carburetor with 6.5 mm restrictor
  • Geat engine for Buggy & Truggy

Speed 21XZ-GT

  • Designed specifically to dominate the competition in the increasingly popular 1/8 scale GT Touring class
  • Five scavenger ports and 3 exhaust ports improve power in the mid- to high range
  • The included dual adjustable carb is ROAR-legal, and comes with a 7 mm restrictor

Specifications (both):

Displacement: 0.213 cu in (3.49 cc)
Bore: 0.641 in (16.27 mm)
Stroke: 0.661 in (16.80 mm)
Practical RPM: 4,000-42,000
Power Output: 2.61 hp/2.65 ps @ 34,000 rpm
Weight: 12.45 oz (353 g)

OSMG2060 Speed 21XZ-B Spec III 1/8 Scale Buggy Engine $499.99
OSMG2062 Speed 21XZ-GT 1/8 Scale GT Touring Car Engine $499.99
Visit O.S.Engines.com
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Updated: September 30, 2016 — 4:15 PM
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