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

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Jovan | June 19, 2026
The 2004 Harley-Davidson FLHRSI, often called the Road King Custom, is a classic cruiser with a rich heritage. Part of the FLHR series, which debuted in 1994, the FLHRSI distinguishes itself with custom styling cues. It features a spacious touring body style and was produced for several model years. Its popularity stems from its iconic Harley-Davidson aesthetic blended with a touch of custom flair, offering a premium riding experience.
The Good

The 2004 FLHRSI offers a comfortable, stable ride with classic Harley styling that appeals to the heart. Its V-twin engine provides ample torque for cruising, while its robust build speaks to practical longevity. The iconic design ensures timeless appeal, making it a desirable machine for both emotional connection and sensible ownership.

The Bad

Potential owners of the 2004 FLHRSI should be aware of common Harley-Davidson issues of the era, such as carburetor tuning sensitivity, potential oil leaks from seals, and the aging of rubber components like fuel lines. Some may find the braking system less potent by modern standards. Electrical gremlins can also occasionally surface.

2004 Harley-Davidson FLHRSI: Quick Overview

  • Engine: 1450cc (88 cubic inch) Air-Cooled V-Twin
  • Engine Option: Fuel-injected (EFI) was standard on the FLHRSI
  • Horsepower: Approximately 67 HP at 5000 RPM (rated at the crank)
  • Torque: Approximately 85 ft-lbs at 3000 RPM (rated at the crank)
  • Fuel Economy: EPA estimates often around 35-40 MPG combined, but highly dependent on riding style and conditions.
  • 0-60 MPH: Typically in the 5-6 second range, depending on rider and conditions.
  • Towing Capacity: Not applicable, as this is a motorcycle designed for solo or two-up riding, not towing trailers.
  • Transmission: 5-speed constant mesh manual
  • Final Drive: Belt drive
  • Front Suspension: 41mm telescopic fork
  • Rear Suspension: Adjustable air-assisted shocks
  • Brakes: Single 320mm disc with 4-piston caliper (front and rear)
  • Wheels: Spoke wheels, typically 16-inch front and rear.
  • Tires: Tubeless
  • Length: Approximately 94.9 inches
  • Wheelbase: Approximately 63.5 inches
  • Seat Height: Approximately 27.1 inches (laden)
  • Ground Clearance: Approximately 5.1 inches
  • Fuel Capacity: 5.0 gallons
  • Dry Weight: Approximately 710 lbs
  • Trim-Level Features (FLHRSI - Road King Custom):
    • Custom styling cues such as custom paint schemes, chrome accents, and a lower, more sculpted profile compared to the standard Road King.
    • Flatter, wider handlebars for a more relaxed riding position.
    • Smaller, detachable windshield for a cleaner look.
    • Leather-look saddlebags with chrome accents.
    • Chrome billet-style mirrors.
    • Custom badging.
    • Standard features like cruise control (on some models), a powerful headlight, and ample chrome.

2004 Harley-Davidson FLHRSI Specifications

Vehicle Information
Year 2004
Make Harley-Davidson
Model FLHRSI
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 FLHRSI Have?

The 2004 Harley-Davidson FLHRSI, like many motorcycles of its era, can exhibit certain common issues that owners and prospective buyers should be aware of. One frequently reported concern pertains to the Twin Cam 88 engine's inherent characteristics, particularly regarding oil leaks. Over time, seals such as the crankcase seals and the primary drive seal can degrade, leading to drips. While not always catastrophic, regular inspection and potential replacement are advisable. The fuel injection system, while generally reliable, can sometimes be sensitive to fuel quality and may benefit from periodic cleaning or adjustments. Carburetor versions, though less common on the FLHRSI, could face similar tuning challenges.

Electrical gremlins are another area that can pop up with age. Connectors can corrode, wiring harnesses might wear, and components like the voltage regulator or stator could eventually fail, leading to charging system issues. This is not unique to Harley-Davidsons but is a consideration for any older vehicle. Some owners have reported premature wear on brake pads and rotors, which can be exacerbated by aggressive riding or lack of maintenance. The suspension, particularly the rear shocks, may lose their effectiveness over time and require servicing or replacement to maintain optimal ride comfort and handling.

While there weren't widespread, model-defining recalls for the 2004 FLHRSI that stand out as major defects, it is always prudent for owners to check with Harley-Davidson or the NHTSA (National Highway Traffic Safety Administration) for any outstanding recalls pertinent to the specific VIN. Long-term reliability is generally considered good for well-maintained Harley-Davidsons, but it hinges heavily on consistent and proper maintenance. Neglecting oil changes, filter replacements, and fluid flushes will accelerate wear on engine and drivetrain components. Addressing minor issues promptly can prevent them from escalating into more significant and costly repairs.

How long will the 2004 Harley-Davidson FLHRSI last?

With proper and diligent maintenance, a 2004 Harley-Davidson FLHRSI can achieve well over 100,000 miles and continue to serve its owner for many years. Many Harley-Davidson owners are passionate about their machines and adhere to strict maintenance schedules, which significantly enhances longevity. The Twin Cam 88 engine is known for its robustness when cared for. Weaknesses that can emerge over time are primarily related to the aging of rubber and plastic components, such as fuel lines, O-rings, and seals, which may require replacement due to degradation. Electrical connections can also become points of concern with age and exposure to the elements. Regular servicing, including timely oil changes, filter replacements, and brake fluid flushes, is paramount to ensuring decades of reliable service from this classic cruiser.

What Technology & Safety Features are Included?

The 2004 Harley-Davidson FLHRSI, being a classic cruiser from that era, focuses more on the traditional riding experience than cutting-edge technology. Built-in tech features are minimal by modern standards. It typically includes a robust halogen headlight and taillight for visibility. The instrument cluster is analog, featuring a speedometer, tachometer, fuel gauge, oil pressure gauge, and indicator lights for turn signals, high beam, and low oil pressure. There is no sophisticated infotainment system, GPS navigation, or digital displays.

Entertainment is derived from the raw experience of the V-twin engine's rumble and the open road. Some later models or optional upgrades might have included an aftermarket stereo system with basic AM/FM radio and possibly a CD player, but this was not standard on the FLHRSI. Connectivity features like Bluetooth or smartphone integration are non-existent from the factory.

Driver-assistance features are also absent. You won't find ABS (Anti-lock Braking System) as standard equipment on the 2004 model, though it may have been an option on some higher trims or later years within the FLHR family. Traction control, cruise control (though available as an option for some FLHR models, it wasn't universally standard on the FLHRSI), and rider modes are not part of the factory offering. The primary safety features are the rider's skill and the bike's inherent stability.

As motorcycles are not subjected to standardized crash-test ratings in the same way as cars (like NHTSA or IIHS ratings), there are no official crash-test scores available for the 2004 FLHRSI. Safety is largely dependent on the rider's experience, adherence to traffic laws, and wearing appropriate protective gear. Optional features for this model year often revolved around personalization and comfort, such as different windshields, custom seats, luggage racks, or engine guard upgrades, rather than technological enhancements.

What Colors Options are Available?

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In the meantime, feel free to explore the other sections for more content.

2004 Harley-Davidson FLHRSI Prices and Market Value

When new, the 2004 Harley-Davidson FLHRSI Road King Custom had a Manufacturer's Suggested Retail Price (MSRP) that typically ranged from approximately $19,000 to $21,000, depending on paint options and minor accessories. As a used vehicle, current market prices for a 2004 FLHRSI can vary significantly, generally falling between $7,000 and $12,000, influenced heavily by mileage, overall condition, maintenance history, and any aftermarket modifications. Harley-Davidson motorcycles, especially iconic models like the Road King Custom, tend to depreciate slower than many other brands and can hold their value well, particularly well-maintained examples. Factors affecting resale value include original paint condition, the presence and quality of custom parts, exhaust systems, and whether the bike has been meticulously serviced. A complete service history significantly boosts resale appeal.

2004 Harley-Davidson FLHRSI Cost of Ownership

Owning a 2004 Harley-Davidson FLHRSI is generally not considered economical. Insurance costs can be moderate to high, depending on rider experience, location, and coverage levels. Fuel economy typically hovers around 35-40 MPG, which is average for a large V-twin. Maintenance is a significant factor; while routine services like oil changes are manageable, potential repairs for aging components or specialized Harley-Davidson parts can be costly. Harley-Davidson repair shops often command premium labor rates. Overall, the FLHRSI is a lifestyle purchase rather than an economical one, with ownership costs leaning towards the higher end due to parts, labor, and potential specialized maintenance needs.

2004 Harley-Davidson FLHRSI Fuel Efficiency

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

2004 Harley-Davidson FLHRSI 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 FLHRSI Insurance

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

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

The 2004 Harley-Davidson FLHRSI Road King Custom competes in the large-displacement cruiser segment, primarily against American and some Japanese counterparts. Key rivals would include other Harley-Davidson models, such as the standard Road King, and potentially models from brands like Indian Motorcycles (though less prevalent in 2004), Honda (like the VTX1800), Yamaha (like the Road Star series), and Kawasaki (like the Vulcan 2000).

In terms of performance, the FLHRSI's 1450cc Twin Cam 88 engine delivers characterful torque rather than outright speed. It excels at comfortable cruising and highway riding, offering a satisfying V-twin rumble. Rivals like the Honda VTX1800 might offer more horsepower and a smoother, more potent acceleration, but often lack the classic, raw character that defines a Harley. The Yamaha Road Star series is known for its torquey engines and often competitive pricing.

Features on the FLHRSI are focused on classic styling and comfort. It offers a relatively minimalist approach compared to some Japanese rivals that might have come standard with more advanced instrumentation or even ABS. Reliability is a mixed bag; while Harley-Davidson engines are robust, older models can be prone to oil leaks and electrical gremlins, requiring attentive maintenance. Some Japanese rivals, like Honda, often boast superior reliability and fewer common issues straight from the factory, making them more practical for a buyer prioritizing dependability over iconic brand heritage.

Price-wise, the FLHRSI, especially new, was positioned as a premium offering. Used, it holds its value well, often commanding higher prices than comparable Japanese cruisers of the same age and mileage due to brand desirability and its iconic status.

Similar Alternatives:
  • Harley-Davidson FLHR Road King: The standard version, offering similar performance and comfort but with more traditional styling.
  • Yamaha Road Star Silverado: Offers a similar touring cruiser experience with a large V-twin, often with more factory amenities and strong reliability.
  • Honda VTX1800C/F: Provides a more powerful and arguably smoother performance, but with a distinctly different aesthetic.

Better Alternatives (depending on priorities):
  • For maximum reliability and less maintenance fuss, a well-maintained Honda Gold Wing (though a different category) or a Yamaha Star series motorcycle would be strong contenders.
  • For pure V-twin rumble and cruiser styling with potentially fewer age-related issues, a later model Harley-Davidson with the Twin Cam 96 or 103 engine might be considered, albeit at a higher price point.

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

The 2004 Harley-Davidson FLHRSI Road King Custom is ideally suited for the rider who cherishes classic American V-twin styling, enjoys the rumble and character of a Harley-Davidson, and prioritizes a comfortable cruiser experience over cutting-edge technology or blistering performance. It's a great choice for seasoned riders looking for a stylish touring-capable cruiser or someone drawn to the iconic Harley-Davidson lifestyle.

Whether it's worth buying depends heavily on the individual bike's condition and maintenance history. Purchased used, it can be a good value if found at a fair price with meticulous service records, as depreciation has largely stabilized. It is absolutely not worth buying if it exhibits significant mechanical issues or has been poorly maintained, as repairs can become expensive. Focus on bikes with lower mileage and evidence of regular upkeep. New examples are obviously not available, so the used market is your only option for this model year.

2004 Harley-Davidson FLHRSI Owner Reviews

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Jovan

Jovan specializes in interpreting vehicle records and making sense of VIN data. With over 10 years of experience in the automotive data industry, his work ensures that every report is clear, accurate, and useful for car buyers.