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2004 Harley-Davidson FLHRS Overview, Reviews, Ratings & Specs

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Simon A | October 14, 2025
The 2004 Harley-Davidson FLHRS, also known as the Road King Custom, is a cruiser motorcycle introduced in 2004. It's characterized by its custom styling, often featuring a slammed stance and unique paint options. This model year represents a blend of classic Harley-Davidson appeal with a more contemporary, personalized aesthetic, making it a sought-after choice for riders seeking distinctive styling. Pricing for a used FLHRS typically ranges from $8,000 to $15,000 depending on condition and modifications.
The Good

The 2004 FLHRS offers a commanding presence with its custom design, comfortable ride for long hauls, and the iconic Harley-Davidson V-twin rumble. Its robust build appeals to practical buyers, while its unique styling and heritage resonate with emotional desires for freedom and individuality.

The Bad

Potential buyers should watch for common Harley-Davidson weaknesses of this era, including carburetor issues (if not properly maintained), potential oil leaks, and brake pad wear. Some owners report a slightly firm ride due to the custom suspension tuning.

2004 Harley-Davidson FLHRS: Quick Overview

  • Engine Options: The 2004 Harley-Davidson FLHRS primarily came equipped with the Twin Cam 88 V-twin engine.
  • Engine Displacement: 1450cc (88 cubic inches)
  • Horsepower: Approximately 67 horsepower at around 5,200 rpm.
  • Torque: Around 86 ft-lbs at roughly 3,500 rpm.
  • Fuel Economy: Typically in the range of 40-50 miles per gallon (MPG) depending on riding conditions and throttle input.
  • 0-60 Times: While not officially published, estimates place the 0-60 mph time around 5.5 to 6.5 seconds, which is respectable for a large cruiser.
  • Towing Capacity: As a motorcycle, towing capacity is not applicable.
  • Trim-Level Features (FLHRS - Road King Custom):
    • Custom styling cues, often including a lowered stance and unique badging.
    • Larger, more comfortable rider seat.
    • Full-coverage front fender, often painted to match the body.
    • Chrome and polished aluminum accents throughout.
    • Detachable fairing (often sold separately or as an option for added wind protection).
    • Hard saddlebags for luggage storage.
    • Classic Harley-Davidson instrumentation.
    • Comfortable passenger seating.
    • Vibration isolation system for a smoother ride.

2004 Harley-Davidson FLHRS Specifications

Vehicle Information
Year 2004
Make Harley-Davidson
Model FLHRS
Trim -
Style -
Type Motorcycle
Category Motorcycle
Manufacturing Details
Made In United States
Manufacturing City YORK
Dimensions
Doors -
Curb Weight -
Gross Vehicle Weight Rating -
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating -
Engine & Performance
Engine 1450CC
Engine Size 1450L
Engine Cylinders 2
Transmission -
Transmission Type -
Transmission Speeds -
Drivetrain -
Additional Features
Anti-Brake System -
Steering Type -
Pricing
Manufacturer Suggested Retail Price (MSRP) -
Invoice Price -
Delivery Charges -

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Analysis

What Problems Does the 2004 Harley-Davidson FLHRS Have?

The 2004 Harley-Davidson FLHRS, like many motorcycles of its era, can have some predictable wear-and-tear issues. A frequently reported concern for Twin Cam engines around this period involves the cam chain tensioners. Early Twin Cam models, including some from 2004, used plastic cam chain tensioner shoes that could wear down over time, potentially leading to noise or even catastrophic engine damage if not addressed. Upgraded hydraulic tensioners are a common and recommended modification. Another area to inspect is the carburetor, specifically the Keihin CV carburetor. While generally reliable, they can sometimes develop issues with vacuum leaks, sticking slides, or float bowl problems, particularly if the bike has been sitting or neglected. Regular cleaning and adjustment are key. Oil leaks, especially from the primary cover or rocker boxes, are not uncommon on older Harley-Davidsons and usually indicate a need for gasket replacement. Brake system maintenance is also crucial; check for worn pads, fluid condition, and potential caliper seal leaks. While there were no major widespread recalls specifically targeting the 2004 FLHRS that fundamentally undermined its reliability, routine maintenance and addressing the cam chain tensioner issue proactively are vital for long-term dependability. Owners often report good long-term reliability if the bike is consistently maintained according to Harley-Davidson's schedule and any known Twin Cam weaknesses are addressed with upgraded components.

How long will the 2004 Harley-Davidson FLHRS last?

Based on owner data and typical maintenance habits, a 2004 Harley-Davidson FLHRS can reasonably expect to see service for well over 100,000 miles, with many examples exceeding 150,000 miles. The Twin Cam 88 engine is known for its robustness when properly cared for. Long-term durability is significantly influenced by consistent oil changes, addressing the cam chain tensioner upgrade, and keeping the carburetor in good working order. Neglect is the primary enemy of longevity. Weaknesses that can emerge over time include wear on the suspension components and the potential for electrical connectors to corrode in humid environments, necessitating occasional cleaning and dielectric grease application.

What Technology & Safety Features are Included?

The 2004 Harley-Davidson FLHRS is a motorcycle designed with a focus on classic riding experience rather than advanced technological integration. As such, built-in tech, entertainment, driver-assistance, and safety features are minimal by modern standards. It typically includes a 12-volt accessory outlet for charging electronic devices. Entertainment is primarily derived from the exhaust note and the open road experience, rather than an integrated sound system. There are no driver-assistance features such as ABS, traction control, or advanced rider aids. Safety features are limited to the inherent capabilities of the motorcycle's design, including good braking systems (though ABS was not standard or widely available on this model in 2004) and effective lighting. Optional features might have included a detachable windshield or fairing for increased wind protection, and sometimes aftermarket audio systems could be installed. Crash-test ratings are not applicable to motorcycles in the same way they are for cars. Motorcycle safety is generally assessed through rider training, road conditions, and protective gear. The FLHRS relies on a sturdy steel frame, reliable disc brakes, and its substantial weight for stability. For buyers prioritizing cutting-edge technology, the 2004 FLHRS will feel very basic, but for those appreciating a more analog and direct connection to the riding experience, this simplicity is often a virtue.

What Colors Options are Available?

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2004 Harley-Davidson FLHRS Prices and Market Value

When new, the 2004 Harley-Davidson FLHRS typically retailed for around $17,000 to $19,000, depending on optional accessories and paint schemes. Today, used market prices for a 2004 FLHRS generally range from $8,000 to $15,000. Harley-Davidsons, particularly iconic models like the Road King Custom, hold their value relatively well compared to many other motorcycle brands. Depreciation has largely stabilized, with the majority of the initial drop occurring in the first few years. Factors significantly affecting resale value include mileage, overall condition, maintenance history, originality of parts, and the presence of desirable aftermarket customizations. Well-maintained, low-mileage examples with desirable factory options or tasteful upgrades will command higher prices.

2004 Harley-Davidson FLHRS Cost of Ownership

Owning a 2004 Harley-Davidson FLHRS can be considered moderately costly, especially when compared to smaller displacement Japanese cruisers. Insurance premiums will vary widely based on rider age, location, and coverage, but expect it to be higher than average. Fuel economy is decent at around 40-50 MPG. Maintenance, including regular oil changes and filter replacements, is essential and can cost a few hundred dollars annually. Repairs, especially for specialized Harley-Davidson components or if issues like the cam chain tensioners arise, can be more expensive. Overall, it's not an economical vehicle to own but offers a premium experience that many owners find justifies the cost.

2004 Harley-Davidson FLHRS Fuel Efficiency

Fuel Type Gasoline
Fuel Capacity -
City Mileage -
Highway Mileage -

2004 Harley-Davidson FLHRS Warranty

Basic
Original warranty 0 months / No data
Estimated remaining Expired
Powertrain
Original warranty 0 months / No data
Estimated remaining Expired
Rust
Original warranty 0 months / No data
Estimated remaining Expired

2004 Harley-Davidson FLHRS Insurance

Insurance for a 2004 Harley-Davidson FLHRS is moderately priced, reflecting its status as a Motorcycle with strong safety ratings and
reasonable repair costs.

How Does the 2004 Harley-Davidson FLHRS Compare to Other Motorcycle?

The 2004 Harley-Davidson FLHRS sits in the large-displacement cruiser segment, facing competition primarily from American and some Japanese manufacturers. Key rivals include the Indian Chief, Honda VTX1800, Yamaha Road Star, and Kawasaki Vulcan 2000. In terms of performance, the FLHRS's Twin Cam 88 offers robust torque for cruising, though it's not a speed demon compared to some of the larger Japanese V-twins like the VTX1800 which often boasts higher horsepower. Features on the FLHRS are classic and functional – comfortable ergonomics, saddlebags, and iconic styling. Rivals like the Honda VTX1800 might offer more modern features or slightly better suspension. Reliability for the Harley is generally good with consistent maintenance, though the cam chain tensioner issue is a known concern to address. The Japanese competitors often have a reputation for slightly more bulletproof, lower-maintenance reliability, but perhaps with less character. Price is where the FLHRS can be competitive in the used market. While new prices were comparable, the used FLHRS often offers a significant value proposition for its heritage and styling. Alternatives: For a similar cruiser experience with potentially more modern tech and perceived reliability, consider a Honda VTX1800 (more power, less iconic 'American' feel) or a Yamaha Road Star (solid cruiser with good value). If pure classic American styling is paramount and you're willing to be proactive with maintenance, the FLHRS is a strong contender. A used Indian Chief offers a similar American heritage but can be more expensive to maintain and find parts for.

Final Verdict: Is the 2004 Harley-Davidson FLHRS a Good Motorcycle?

The 2004 Harley-Davidson FLHRS is ideal for riders who appreciate classic American motorcycle styling, a comfortable cruising experience, and the iconic Harley-Davidson heritage. It's a great choice for those who enjoy the tactile feel of a traditional V-twin and don't require cutting-edge technology. This motorcycle is absolutely worth buying if you can find one in good condition, especially on the used market, as new ones are no longer available. Focus on used examples, meticulously check for signs of wear and tear, and factor in the potential cost of upgrading the cam chain tensioners. It represents a solid investment for riders seeking a stylish, comfortable, and character-filled cruiser.

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Simon A

Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.