O.S. 21XZ-B ABC delivers top-of-the-line power and performance for competition. The 21XZ-B improves torque and acceleration while reducing weight and the center of gravity.
- 21J2 three-needle carburetor includes a 7 mm restrictor for fine-tuned control.
- Long stroke allows for superior torque.
- P3 glow plug, exhaust seal and dust cap set.
- Unparalleled, speed-tuned power characteristics.
- Provides improved fuel mileage and a stronger crankcase.
Displacement: 0.21 cu in (3.5 cc) Bore: 0.6 in (16.3 mm) Stroke: 0.7 in (16.8 mm) Output: 2.5 hp @ 33,000 rpm RPM Range: 4,000-40,000 Weight: 12.6 oz (357 g) Requirements: Glow fuel, Muffler, Tuned pipe and Manifold