Free shipping on every order!

You have no items in your shopping cart.

You have no items to compare.

Tao Tao Scooter ATV Parts Universal

Naraku 52.4mm Performance Cylinder & Head Kit

Naraku 52.4mm Performance Cylinder & Head Kit

Be the first to review this product


In stock

SKU: PFS 137-4

Supported Models: QMB139 50cc/49cc , Various unlisted makes/models

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! When used with a 44mm stroker crank, total displacement measures 94.9cc!

Please see our Warranty & Returns Policy.

Please note: replaces Cylinder Heads with 64mm Valves (Short Valve Style). Please see Related Items if you need 64mm valves. 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

  • Uses Short 64mm Valve Stems

Write Your Own Review

You're reviewing: Naraku 52.4mm Performance Cylinder & Head Kit

This is a static CMS block displayed if category is empty. You can put your own content here.