Customer Service (503) 832-7336
The Only Place For People Who Ride


Couldn't load pickup availability
Free standard shipping on orders over $149
We ship to the lower 48 United States. Orders over $149 ship free; a flat rate applies under $149. Estimated delivery dates are shown at checkout based on item availability and the shipping option you choose.
We text or call to confirm sizing & fitment before we ship.
Every Factory SuperBike order includes a free expert check from real riders. Before we ship helmets and gear, we text or call to confirm your size and fit; for parts, we verify fitment to your bike. This is why we don't have to guess and you don't have to gamble.
Helmet & gear orders: reply to our text to confirm and your order ships, typically same day. No reply within 48 hours and we'll call you. Questions now? Call or text (503) 832-7336.
Enhance your Harley-Davidson’s performance with Maxima Primary V-Twin Oil, 32oz (Part #40-04901), from Factory SuperBike. Formulated for 1984 and newer Harley-Davidson models with wet diaphragm spring clutches, this mineral-based gear oil ensures smooth shifts, prevents clutch slippage, and extends chain life.
Engineered for high-performance V-Twin Harley-Davidson motorcycles, this primary oil delivers reliable protection and performance. Made in the U.S.A. Explore more Maxima Racing Oils at Factory SuperBike.
Note: Not for sale in California or New York (Prop 65).
Keep your Harley-Davidson running strong. Limited stock—text DEALS to 503-832-7473 to secure yours today!
© Factory SuperBike 2025
Thanks for subscribing!
This email has been registered!
| Product | SKU | Description | Collection | Availability | Product type | Other details |
|---|