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The 21XZ-R VII's aggressive timing puts explosive acceleration and top-end speed at your fingertips, while surprising starting ease lets you unleash its race-winning potential right out of the box.

OSMG2042
Displacement: 0.212 cu in (3.49 cc)
Bore: 0.640 in (16.27 mm)
Stroke: 0.661 (16.8 mm)
RPM Range: 4000-45000
Output: 2.8 hp @ 33000
Weight: 12.1 oz (343 g)
Includes: RP7 Turbo glow plug, exhaust seal ring, 0.01 & 0.02 mm cylinder head gaskets, 8.5 mm (purple) carb restrictor, flywheel collet & exhaust, carb and fuel nipple dust caps.

The 21M carb is unmatched for smooth, linear acceleration. Performance-tuning options include a carb restrictor as well as four adjustable settings.