Harley-Davidson Fat Handlebar Riser Kit 55900122,H-BAR MTG/END,CLAMP & RSR

Designed to enable the installation of a 1.25 inch handlebar on models originally equipped with a 1.0 inch  bar.- Chrome finish- Low profile risers feature a one-piece top clamp for added support and style- Includes matching installation hardware

Fits ’18-later FLDE, FLFB, FLFBS, FLHC, FLHCS, FLSB, FLSL, FXLR and ’24-later FLI models. Fat Handlebar Riser Kit 55900122

Fat Handlebar Riser Kit 55900122

The Harley‑Davidson Fat Handlebar Riser Kit 55900122 is an expertly engineered accessory designed to upgrade both the ergonomics and appearance of your Harley‑Davidson motorcycle. This kit allows riders to install larger 1.25‑inch diameter handlebars on bikes that were originally equipped with the more common 1.0‑inch bars, giving riders a beefier, more commanding handlebar feel and improved leverage for control and comfort. (Harley-Davidson) Fat Handlebar Riser Kit 55900122

At its core, the Fat Handlebar Riser Kit is much more than a simple set of risers. The design incorporates low‑profile risers and a one‑piece top clamp finished in mirror chrome (for part number 55900122; a gloss black version exists under a different part number) that provides enhanced structural support and a premium custom look that complements a wide range of Harley‑Davidson bikes. The clean, polished chrome not only adds style but also resists corrosion and wear, helping maintain its aesthetic appeal through years of use. (Harley-Davidson) Fat Handlebar Riser Kit 55900122

Key Features and Fitment

• Supports Larger Handlebars: The primary purpose of this kit is to allow the installation of 1.25‑inch handlebars on motorcycles originally built for smaller 1.0‑inch bars, opening the door to a variety of aftermarket handlebar styles that offer increased comfort and an aggressive riding stance. (Harley-Davidson)
• One‑Piece Top Clamp: The one‑piece top clamp increases rigidity and support compared to two‑piece designs, helping minimize flex and ensuring secure clamping of the handlebar. This improves overall handling feel, especially under hard braking or rough road conditions. (Harley-Davidson)
• Matching Hardware Included: The kit includes all necessary installation hardware — risers (two), top clamp, screws, and spacers — so no additional components are needed to complete the upgrade. This makes installation clean and straightforward when paired with a compatible handlebar. (Harley-Davidson)Fat Handlebar Riser Kit 55900122
• Chromed Aluminum Construction: Constructed from durable aluminum with a polished chrome finish, these risers strike a balance between strength and lightweight performance. The chrome not only looks great but also complements other chrome accessories commonly found on Harley‑Davidson motorcycles. (Morgan & Wacker) Fat Handlebar Riser Kit 55900122The Fat Handlebar Riser Kit 55900122 is specifically designed to fit a number of Harley‑Davidson models from the 2018 model year onward, including FLDE, FLFB, FLFBS, FLHC, FLHCS, FLSB, FLSL, FXLR, and 2024 FLI models. It is ideal for riders who want a more commanding hand position or who are upgrading to larger bars for enhanced comfort on long rides. (Harley-Davidson) Fat Handlebar Riser Kit 55900122

Fat Handlebar Riser Kit 55900122 Installation and Usage

Installing this riser kit requires some mechanical familiarity and the correct tools. While the kit includes all necessary hardware, proper installation often involves removing the stock risers and clamps, positioning the new risers and top clamp, and ensuring that all components are torqued to the manufacturer’s specifications. In some cases — especially on bikes with fairings or complex controls — installation may require temporarily removing handlebar‑mounted components or rerouting cables and lines. Some owners therefore prefer dealer installation or the guidance of a qualified technician. (Harley-Davidson Service Info)

Once installed, the fat risers raise the handlebar mounting point and provide a more robust clamp for thicker bars. This results in a sturdier feel at the grips and can contribute to less fatigue on long rides, as the handlebars are closer to the rider’s natural reach. Riders transitioning from stock bars to aftermarket 1.25‑inch bars will notice a distinct increase in leverage, which can translate to easier steering and better control at slow speeds and while maneuvering tight turns.

Fat Handlebar Riser Kit 55900122 Performance and Aesthetics

From both aesthetic and functional standpoints, the Fat Handlebar Riser Kit enhances the front end of the motorcycle. The chromed components blend with other chrome accessories and engine finishes, reinforcing that classic Harley look, while the low‑profile design keeps the front end sleek rather than bulky. The larger handlebar diameter accommodated by these risers also allows for better integration of modern grips, switch housings, and accessory mounts such as mirrors or phone holders.

In summary, the Harley‑Davidson Fat Handlebar Riser Kit 55900122 is a thoughtfully engineered upgrade that gives riders the flexibility to customize their riding position with larger handlebars while adding a touch of classic Harley style. Its solid construction, included hardware, and targeted fitment make it a popular choice among riders looking to improve comfort, control, and visual appeal on compatible Harley‑Davidson models. (Harley-Davidson) Fat Handlebar Riser Kit 55900122