Customer Service (503) 832-7336
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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 | Triumph 675 | Unmatched Performance
Elevate your Triumph 675 to new performance heights with our Stringer Variable Velocity Stacks. Engineered for riders who demand excellence, these stacks deliver substantial power gains and enhanced acceleration, transforming your Triumph 675 into a top-tier racing machine.
Factory SuperBike and Stringer Race Station have collaborated to bring you these Stringer Variable Velocity Stacks, a groundbreaking innovation in sport bike technology. With consistent power gains across the entire RPM range, these stacks outperform traditional static stacks, giving you the competitive edge on both the track and the street.
Key Features:
Racers have reported remarkable improvements with these stacks, making them an essential upgrade for any serious rider. No other modification at this price point offers such substantial boosts in power and throttle response.
Custom 3D Printed Item Policy:
Equip your Triumph 675 with our Stringer Variable Velocity Stacks and experience a new level of performance. It’s not just an upgrade—it’s a game-changer.
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