Skip to content
Shop more than 10,000 scooter parts online at Thrifty Scooters

Naraku Crankshaft Heavy Duty 16 Tooth for QMB139

Original price $0.00 - Original price $0.00
Original price $0.00
$180.00
$180.00 - $180.00
Current price $180.00
Availability:
Only 1 left!

Free returns on all eligible orders

You have 30 days to request a return. All sale items are final sale.

Naraku Performance Heavy Duty Crankshaft for 50cc, 4-Stroke QMB139 engines - Oil Pump Sprocket 16 Tooth.

OEM-Quality Naraku Crankshaft matches Japanese and Taiwanese alternatives. Kitted with high quality, heavy duty bearings which allow for longer service life and durability, this crankshaft is far superior to low cost Chinese crankshafts.

Matches the design and size of your original crank, making it a perfect choice as a standard replacement. Also, goes great with your Big Bore Kit. Pre-assembled with pressed bearings. Make sure you check that you have a 16 tooth oil pump drive gear!


  • NK100.81
  • Heavy Duty
  • 16 Tooth Oil Pump Drive Gear
  • Includes Bearings
  • Made in Taiwan
QMB139 50cc/49cc

This product is not intended for use on public roads or land.

Shipping information

Orders are prepared as quickly as possible. Delivery times and shipping costs are calculated at checkout based on the destination and items ordered.

Returns & warranty

Please verify fitment and part number before ordering. Contact Thrifty Scooters promptly if an item arrives damaged or incorrect.

Related categories

Free Shipping

When you spend $50 or more

Here to Help

Get in touch with us 7 days a week

Store Pickup

Pick up your order yourself, for free

Easy Exchanges

Return or exchange within 60 days

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare