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.
Unlock massive top-end power while preserving midrange for your Kawasaki ZX-10R ZX-10RR with EDR Performance Velocity Stacks from Factory SuperBike. Achieve solid gains of +5-7 RWHP above 6,000 RPM with no midrange loss—install in under 15 minutes, no tuning required.
EDR Performance velocity stacks address OEM limitations, delivering the best ZX-10R kit available—tested to throw over 201 RWHP with further tuning. Ideal for superbike enthusiasts seeking linear, high-rev power. Shop at Factory SuperBike for authentic EDR parts. Explore more EDR Performance upgrades.
Kit Includes: 1x Left Velocity Stack, 1x Right Velocity Stack, 1x 1ml Red Thread Locking Compound.
Special Note: No instructions included—intended for race technician installation. As of Summer 2025, high demand may result in 2-3 week lead time—orders fulfilled in sequence. Custom-made, non-cancelable, non-refundable. For closed course off-road competition use only; not legal for sale or use in California or pollution-controlled vehicles. Buyer assumes responsibility for local laws.
Transform your ZX-10R with EDR Performance stacks. Limited stock—text DEALS to 503-832-7473 to secure yours today! Join the conversation at motorcycle.com.
© Factory SuperBike 2025
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