Naraku 52.4mm Performance Cylinder & Head Kit
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Naraku 52.4mm Performance Cylinder & Head Kit
Naraku 52.4mm Performance Cylinder & Head Kit
Item-Code : 137-4
Regular Price : $360.00
Season Special: $256.99
Qty :



 





Product Description
img-qind.JPGNaraku 50cc QMB139 4-stroke 52.4mm, Racing Big Bore Cylinder and Head Kit. Kit includes cylinder, piston, rings, piston pin, cir clips, cylinder head, head gasket, and base gasket.

When used in conjunction with a stock stroke of 41.4mm the total displacement comes out to 89.3cc!
*You may need to modify your engine case to accommodate the larger cylinder.
  • Upgrades to 89.3cc
  • Cylinder Bore: 52.4mm
  • Cylinder Sleeve Outer Diameter: 54.4mm
  • Wrist Pin Diameter: 13mm
  • Total Piston Height: 36.3mm
  • Compression Height (from center of wrist pin hole to top edge of piston): 20mm
  • Non-emissions style head
  • Intake valve: 23mm
  • Exhaust valve: 20mm
  • Intake Port Diameter: 20.8mm
  • Exhaust Port Diameter: 18.7mm
 
 
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