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Boyesen's revolutionary dual-stage reed design delivers more usable power than stock. Your original one-stage reed operates most effectively only within a narrow RPM range. Boyesen's one soft reed on top of one firm flow-through reed gives you a wide range of intake control, plus increased intake velocity. Your original reeds can't possibly duplicate that performance.
Minor change give major HP improvements.
Faster opening and closing.
Greater low pressure (low-throttle) response.
Greater velocity and flow area.
Longer overall life.
No engine damage if broken.
Note: For stock replacement ONLY.
Dual-stage reeds work in unison to perform efficiently throughout the entire powerband. The difference in stiffness between the top reed and the bottom reed allow the reeds to respond quickly and accurately to changes in engine pressure. This translates into quicker acceleration, crisper throttle response and increased horsepower throughout the powerband.
Shipping & Returns
You can return most new, unopened items within 14 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item). If you need to return an item, please contact us beforehand with the order number and information regarding the item(s) you would like to exchange. Please note, electronic items are non-refundable.
If you're purchasing one of our polished products, please use a new microfiber and a non-ammonia window cleaner to clean any fingerprints and grease. We recommend using Simi Chrome paste to touchup polished parts.