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

Packed with performance for on-road dominance!

• 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