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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.
Stringer Variable Velocity Stacks | Yamaha R7 | 2017-2025 | Ultimate Performance
Elevate your Yamaha R7 (2017-2025) to new performance heights with our Stringer Variable Velocity Stacks. Engineered for significant power gains and enhanced acceleration, these stacks are the ultimate performance upgrade for your bike.
Factory SuperBike and Stringer Race Station have collaborated to bring you these Stringer Variable Velocity Stacks, a breakthrough in sport bike performance technology. With consistent power gains across the entire RPM range, these stacks outperform static stacks that offer limited benefits.
Key Features:
Top racers have reported remarkable improvements, making these stacks a crucial upgrade for any serious rider. No other modification at this price point offers such substantial gains in power and throttle response.
Custom 3D Printed Item Policy:
Upgrade your Yamaha R7 (2017-2025) with our Stringer Variable Velocity Stacks and stay ahead of the competition. It's not just an upgrade—it’s a game-changer.
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