YSS Fork Upgrade Kit

Affordable Race-Grade Handling: YSS Front Fork Upgrade Kit

Is your motorcycle's front end feeling soft, spongy, or prone to excessive dive under heavy braking? You don’t need to spend thousands on a complete custom front-end swap to achieve razor-sharp handling. The YSS Front Fork Upgrade Kit is a highly cost-effective, comprehensive suspension overhaul engineered to completely transform your bike's front-end dynamics, tracking, and stability.

Specially developed for traditional conventional and damping-rod forks found on many modern classics, cruisers, adventure bikes, and dual-sports, this kit updates older fork technology to match modern sport performance standards. By combining precision-calibrated fork springs, adjustable top caps, and YSS’s advanced fork emulator valves (PD Valves), this kit delivers a firmer, more controlled, and safer ride without compromising on comfort.

Why Choose the YSS Front Fork Upgrade Kit?

• Advanced PD Valve Technology: The included fork emulator valves simulate the multi-stage dynamics of a high-end cartridge suspension system. They control oil flow precisely to significantly reduce front-end dive under heavy braking while remaining plush over sudden, sharp bumps.
• High-Performance Fork Springs: Wound from premium steel, these springs are specifically calibrated to support your bike's weight. They eliminate bottoming out and keep the front tire firmly glued to the road or trail for maximum cornering grip.
• External Preload Adjustability: No more dealing with a fixed, one-size-fits-all factory setup. The kit features premium aluminum top caps equipped with external threaded adjusters, allowing you to easily dial in your exact rider sag based on your weight and riding style.
• Night-and-Day Handling Improvement: Instantly eliminates unstable mid-corner wallowing, drastically improves front-tire feedback, and provides a highly predictable, confidence-inspiring ride.

Technical Specifications

• Product Type: Front Fork Upgrade & Emulator Kit
• Components Included: High-performance fork springs, YSS PD (Piston Damper) Emulator Valves, and Preload Adjustable Fork Caps (included depending on specific bike application)
• Material Quality: High-strength billet aluminum caps and shot-peened steel springs for maximum durability
• Damping Control: Velocity-sensitive compression damping adjustment via internal valve spring tuning
• Installation: Direct drop-in replacement for stock internals (may require minor damping rod drilling depending on application)

Compatible vehicles:

• 2021-2024 HARLEY-DAVIDSON STREET GLIDE 1868