Free shipping on every order!

You have no items in your shopping cart.

You have no items to compare.

Home

Naraku 52.4mm Performance Cylinder & Head Kit

Naraku 52.4mm Performance Cylinder & Head Kit

Be the first to review this product

$239.99

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


Details

Naraku 52.4mm Performance Cylinder & Head Kit

Product Tags

  • No tags connected to product

Use spaces to separate tags. Use single quotes (') for phrases.

  1. Be the first to review this product

WRITE YOUR REVIEW

Write Your Own Review

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

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

Description

Details

Naraku 52.4mm Performance Cylinder & Head Kit

Tags

Product Tags

  • No tags connected to product

Use spaces to separate tags. Use single quotes (') for phrases.

Reviews

  1. Be the first to review this product

WRITE YOUR REVIEW

Write Your Own Review

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

Custom Tab

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

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