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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
K&N Intake System-Harley Davidson (RK-3909-1)K&N's RK Series was developed to get more horsepower from your Twin Cam Harley Davidson engine. Built around the legendary K&N High Flow Air Filter, the this RK Series assembly includes an innovative powder coated billet aluminum back plate that eliminates external breathers and features a built in, dyno tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration. This RK Series assembly retains a
K&N's RK Series was developed to get more horsepower from your Twin Cam Harley-Davidson engine. Built around the legendary K&N High-Flow Air Filter, the this RK Series assembly includes an innovative powder coated billet aluminum back plate that eliminates external breathers and features a built-in, dyno-tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration. This RK Series assembly retains a factory appearance by utilizing the stock air cleaner cover. The RK-3910-1 comes with a larger air filter and longer spacers than the RK-3909-1.- Designed to increase horsepower & torque
- Dyno-tuned velocity stack
- Washable and reusable
- Excellent air filtration
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 1296 reviews
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Product Reviews
★★★★★ 5
Great buy!
My large dog has been chewing on it for months. She loves it and it’s almost indestructible!
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Reviewed in the United States on April 16, 2026
★★★★★ 3
A challenging chew.
We have 3 Gordon Setters, 2 of which like toys to chew on. These last a long time. The only thing I would caution ⚠️ you about is that over time, these develop sharp edges. If they rub the toy on you, you will know it. Especially if you are wearing shorts. I do like these toys for their longevity.
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Reviewed in the United States on July 29, 2025
★★★★★ 4
Durability
My Daisy is a very heavy cheer, this is perfect for her. Yes it feels like heavy plastic but hey it does the job as well
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Reviewed in the United States on June 13, 2026
★★★★★ 5
My god loves his new chew bone 😍
My dog loves this chew bone, he chewed on it daily since I gave it to him. It's good value for money, pretty hard, lasted about a month & a half. Good size bone for a medium sized dog
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Long lasting bone for aggressive chewers!
My dog loves to chew on this bone. She is a corgi, very aggressive chewer. This bone will last forever.
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Reviewed in the United States on May 5, 2026