Naraku 52.4mm Performance Cylinder & Head Kit

$239.99 $221.99

Naraku 52.4mm Performance Cylinder & Head Kit

9 in stock

UPC 718046952732 SKU: 137-4 Category:

Naraku 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! Please see our Warranty & Returns Policy.*You may need to modify your engine case to accommodate the larger cylinder.

Weight 72 oz
Dimensions 6 × 6 × 8 in
  • 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
  • Uses Short 64mm Valve Stems

Search By Category