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O.S. Engines

O.S. 21XZ-B ABC Speed Spec II

21XZ-B ABC Speed Spec II

Superior Speed Spec performance!

O.S. 21XZ-B ABC Speed Spec II
stock#
LXDCUD
Only
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Add To Wish List Tech Notes Accessories Needed
O.S. Engineers have developed a leaner, meaner 21XZ-B Speed Spec II to bring you even more power at a lighter weight. Some of the great new features include: a lighter DLC coated crankshaft, a newly designed outer head with V-shaped fins for more efficient cooling and a dual-adjustable 21J carburetor for smoother acceleration and better fuel mileage.

Specifications
Displacement: 0.213 cu in (3.49 cc), Bore: 0.641 in (16.27 mm), Stroke: 0.661 in (16.8 mm), Practical RPM Range: 4,000-42,000, Output: 2.65 ps @ 34,000 rpm, Weight: 12.52 oz (355 g), Requirements: Car blend glow fuel with 10-30% nitromethane content, Air filter and exhaust (depending on vehicle), Glow starter and track equipment



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