NOTE: Top end assembly required for this engine.

Comes with:

• Thunder Shark Pro Racing 66cc/80cc Engine Only 5.0 HP
• Shark Head CNC High Compression Head
• OKO Hi-Tech Performance Carburetor
• High Performance Small Straight Mesh Air Filter
• Ported Cylinder
• Stainless Steel Cylinder Screw Set

* Orders received Monday - Friday by 3:00PM EST are eligible for
Same Day Shipping! Except for USPS which ships the next business day.

We Can ship to PO BOXES at this time. For International and Canadian shipping we suggest UPS STANDARD. This does not cover Customs Brokerage, Duties, and Taxes… these are charged to the consignee on delivery). We have found that this is the cheapest way to send packages Internationally and to Canada.

Our gasoline operated products are NOT compliant with Environmental Protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.

If you need help with installation or troubleshooting, kindly use our Builder Locator to find builders near you. Builders are experts with motorized bicycles.