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21XZ-R On-Road ABC w/21M


21XZ-R

 

Packed with performance for on-road dominance!

O.S. is gearing up for victory at major 1/8 scale on-road championships with the 21XZ-R ABC!
  • Tungsten-weighted crankshaft creates optimum balance for consistent low- and mid-speed torque.

  • The cylinder liner features 7 scavenger ports and 3 exhaust ports for more efficient combustion.

  • The crankcase and 21M carburetor are newly designed.

  • Lighter piston.

  • More durable con rod.


Stock Number: OSMG2040
Displacement: 0.213 cu in (3.49 cc)
Bore: 0.640 in (16.27 mm)
Stroke: 0.661 in (16.8 mm)
Practical rpm: 4,000-45,000
Power Output: 2.7 hp @ 33,000 rpm
Weight: 12.32 oz (348 g)
13873 21XZ-R Parts Listing



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