Add Height and Adjustability to your ride with the FK-49/80 Fork Spring and Preload System from American Suspension:
Crafted in the USA: 🇺🇸 Manufactured to exacting standards, these coil springs are specifically designed for road and race motorcycles, ensuring superior performance and durability.
Precision Engineering: 🔧 Our coil springs are meticulously wound using the finest quality, high tensile wire available. Each spring's rates, wire diameters, and coil lengths have been fine-tuned through extensive real-world testing on a variety of roads and conditions.
Unmatched Quality: 💪 With closed and ground ends, our springs sit flat and deflect true, providing optimal handling and control. You can trust in a ride that's as smooth as it is precise.
Lifetime Warranty: 🛡️ We stand behind our products with a lifetime warranty against sagging and breakage for the original purchaser. Enjoy the added peace of mind knowing you're covered, no questions asked.
Customizable Options: 🛠️ Elevate your bike with our spring preload adjuster caps, available in +1”, +2”, or +3” options. Gain the ground clearance you need without the hassle of replacing fork tubes.
Easy Adjustments: 🔄 Fine-tune your preload to accommodate varying road conditions and rider weights with ease. Experience a tailored ride like never before.
Complete Kit: 📦 Each kit includes preload adjusters, performance springs, and all necessary hardware for a seamless installation.
Proudly Made in the USA: 🗽 Like all American Suspension parts, the FK-49/80 Fork Spring and Preload System is proudly crafted in the USA, delivering quality, performance, and innovation you can trust.
Transform your ride today with the FK-49/80 Fork Spring and Preload System – where quality, performance, and innovation meet the open road.
 
INSTALL INFO:
 
Initial Setup:
Ensure that the preload adjuster screw is fully backed out, leaving it flush with the cap (no preload applied).
Spring Compression:
Set the circlip on the preload adjuster so that there is approximately 1/4" to 1/2" of compression on the spring as you begin threading the cap into place.
Preload Adjustment:
Once the assembly is complete, adjust the preload screw in the cap so that the static preload accounts for about 1/3 to 1/4 of your total travel.