Harley-Davidson Fat Boy

Twin Power Shocker Gel batteries use nano-gel technology in a heavy-duty OEM-style case for long, reliable starting performance. The gel electrolyt...

The Vance & Hines FP4 is a Bluetooth ECU tuner that lets you manage your Harley-Davidson's fuel delivery and performance from a smartphone app....

The 422 Series is Progressive Suspension's purpose-built system for the under-frame Softail chassis, available exclusively as an adjustable ride-he...

Sporting a sleek and minimalistic design, the VO2 Cage Fighter is designed for maximum air flow to your engine using a high capacity air filter and...

The Milwaukee-Eight Softail chassis is genuinely good, and the suspension is where the factory saved the money. This kit fixes both ends with Öhlin...

Fox's complete answer for the Milwaukee-Eight Softails: GRIP fork cartridges in your choice of trim up front, and the Fox IFP-QSR monoshock in your...

Twin Power Shocker batteries are endurance and laboratory tested for long, reliable performance in a heavy-duty OEM-style case. Absorbed Glass Mat ...

Twin Power High Performance batteries are made in the USA and supplied factory activated, filled, sealed, and charged. Absorbed Glass Mat construct...

Twin Power Premium MAX batteries are made in the USA with Absorbed Glass Mat construction in a heavy-duty OEM-style case. Factory activated and sea...

The 422 Series is Progressive Suspension's purpose-built system for the under-frame Softail chassis, available exclusively as an adjustable ride-he...

Fox Grip ST adjustable fork cartridge kit for the 49mm Harley-Davidson Softail (Milwaukee-Eight) front end — Fox's highest-end street fork cartridg...

This fork lowering spring kit lowers the front end while preserving progressive-rate spring performance. Combined with shorter-than-stock rear shoc...

This fork lowering spring kit lowers the front end while preserving progressive-rate spring performance. Combined with shorter-than-stock rear shoc...

Progressive Suspension's Drop-In fork lowering kits turn a messy, time-consuming job into an easy 30-minute install. Pull up to two inches out of t...

The original progressive-rate fork springs soak up small road chatter while staying firm enough to absorb hard hits. Spring rates are matched to th...

The original progressive-rate fork springs soak up small road chatter while staying firm enough to absorb hard hits. Spring rates are matched to th...

The original progressive-rate fork springs soak up small road chatter while staying firm enough to absorb hard hits. Spring rates are matched to th...

This rear lowering kit uses expertly machined, chrome-finished shock-mount brackets to drop the rear of the motorcycle for a lower stance and easie...

The Monotube Fork Cartridge Kit replaces the stock damper-rod internals with modern monotube cartridge damping for improved front-end stability and...