KURYAKYN 9975 Breather Bolts 1/4 Bike

( Brand: Kuryakyn ), ( Manufacturer Part Number: 9975 ), ( Part Type: Breather Bolt ), ( Make: Harley )

Review KURYAKYN Breather Bolts Stock Length 1/4 Inch Motorcycle Bike fits STREET

Introducing the Kuryakyn 9975 Breather Bolts, an essential upgrade for your 1/4 inch street bike's engine. These high-performance bolts are engineered to provide a perfect seal and enhance the visual appeal of your motorcycle's engine compartment.

The Kuryakyn 9975 Breather Bolts are CNC machined from billet aluminum, ensuring a precise fit and exceptional durability. Each bolt is finished with a shiny chrome plating that not only looks great but also provides a protective layer against corrosion and wear.

These bolts are designed to replace the original factory breather bolts on your street bike. By using these upgraded bolts, you can improve the sealing of the crankcase ventilation system, which can help reduce crankcase pressure and improve engine performance.

The Kuryakyn 9975 Breather Bolts come in a set of four, and each bolt features a unique hex head design for easy installation and removal. The hex head also provides added grip and torque transfer, ensuring a secure connection between the bolt and the breather cap.

Installation of these bolts is straightforward and can be done with basic hand tools. No special tools or modifications are required, making this an accessible upgrade for any motorcycle enthusiast.

In summary, the Kuryakyn 9975 Breather Bolts are a must-have upgrade for any 1/4 inch street bike. They offer improved sealing, enhanced durability, and a stylish appearance that is sure to impress. With their precision engineering, easy installation, and long-lasting construction, these bolts are an investment that will pay off in both performance and aesthetics.

Kuryakyn 9975 Breather Bolts are aftermarket replacement bolts designed for 1/4 inch diameter air intake hoses on street motorcycles. These bolts offer several advantages and disadvantages, making it essential to consider both before making a purchasing decision.

1. Aesthetics: Kuryakyn Breather Bolts are available in various finishes, including chrome, black, and polished stainless steel, allowing riders to customize the look of their motorcycles.

2. Durability: These aftermarket bolts are made of high-quality materials, ensuring they last longer than OEM bolts.

3. Leak-Free Seal: Kuryakyn Breather Bolts have a unique design that helps create a leak-free seal between the intake hose and the engine, which can improve engine performance and efficiency.

4. Easier Installation: The Kuryakyn Breather Bolts come with a hex head design, making them easier to install and remove compared to the OEM bolts, which can be challenging to access and require special tools.

1. Cost: Kuryakyn Breather Bolts are more expensive than OEM replacements.

2. Potential Requirement for Additional Parts: Depending on the condition of the existing intake hoses, it may be necessary to replace them along with the breather bolts, adding to the overall cost.

3. No Universal Fitment: Kuryakyn Breather Bolts are not a universal fitment and are intended for specific motorcycle makes and models.

The decision to buy Kuryakyn 9975 Breather Bolts ultimately comes down to a rider's preferences and priorities. If aesthetics, durability, and a leak-free seal are important factors, and the cost is not a significant concern, then these aftermarket bolts could be a worthwhile investment. However, if cost is the primary consideration, it might be better to stick with OEM replacements.

Considering the advantages and disadvantages listed above, it is recommended to evaluate the current condition of the existing breather bolts and intake hoses on your motorcycle. If they are worn out, leaking, or in need of replacement, then investing in Kuryakyn 9975 Breather Bolts could bring several benefits, such as improved engine performance, easier installation, and a custom look. However, if the current bolts are still in good condition, it might be more cost-effective to stick with OEM replacements.

Details:

Replacement breather components for Twin Cams. Kuryakyn, Breather Bolts, Stock length 1/4in. Sold as: Pair. Harley Davidson FXSTB Night Train 2004.

Harley Davidson FXSTB Night Train 2003. Harley Davidson FXSTB Night Train 2002. Any damage claims may be exchanged for the identical item only.

part #: 9975 prices

• $13.99-$22.61

specifications scoofilters:

• for models: Street
• brand: Kuryakyn
• mpn: 9975
• part type: Breather Bolt
• make: Harley

payments scoofilters:

• credit card: Visa
• other
• wallet: Google-pay

general scoofilters:

• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Air Filters

offer scoofilters:

• started: April 25, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0

shipping scoofilters:

• type: Fixed
• cost: $0.00
• service: Economy, Standard, Expedited
• class: Economy, Standard, Expedited
• transit: 4-9 Days

returns scoofilters:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

seller scoofilters:

• # reviews: 641824
• rating: 99.6%
• city: Loudon, Tennessee

Kuryakyn 9975 Is Similar To:

• Kuryakyn 9920 Crankcase Breather Kit 1993-17 Harley Twin Cam Softail Dyna Touring Flh (29.6% similar) Kuryakyn crankcase breather kit 1993 -17 harley twin cam Softail DNA touring FL Kuryakyn part # 9920. Included with our hyper charger kits for twin cam model's, this breather kit installs between the air cleaner and carb support bracket. The stock breather bolts and vent hoses are reused...(December 2nd, 2025)
• Kuryakyn 9932 Bluegrass Breather Kit 1993-06 Big Twin 2001-15 Cam (37.5% similar) Optional catch tank is available for those who would rather vent to a closed container. Harley Davidson foxiest Softail custom 1996 . The blue grass breather can cure that. Fits most carbs except miking hrs. Harley Davidson foxiest Softail custom 1997 . The banjo fittings chrome...(December 10th, 2025)
• Kuryakyn 9976 Breather Bolts 1 3 4 Inch Motorcycle Street Bike Kur9976 (83.2% similar) Kuryakyn, breather bolts, 1/3 /4IN. Harley Davidson foxiest night train 2001 . Harley Davidson foxiest night train 2002 . Replacement breather components for twin cams. Harley Davidson foxiest night train 2003 . Sold as: pair. Any damage claims may be exchanged for the identical item only...(April 6th, 2026)