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2020 Triumph Rocket 3 GT Overview, Reviews, Ratings & Specs

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Cathleen V | November 22, 2025
The 2020 Triumph Rocket 3 GT is a modern muscle cruiser, a significant evolution of Triumph's legendary Rocket lineage, which began in 2004. This iteration, launched for the 2020 model year, is characterized by its imposing power cruiser body style. It is offered in two primary trims: the R (roadster) and the GT (grand tourer). Pricing for the 2020 model year typically ranged from around $23,000 to $25,000 depending on trim and options. Its popularity stems from its colossal 2.5-liter engine, delivering unparalleled torque and exhilarating acceleration, making it one of the most powerful production motorcycles available.
The Good

The 2020 Triumph Rocket 3 GT excels with its earth-shattering performance, impressive torque, and smooth power delivery. It offers surprisingly good comfort for a cruiser, with a well-designed seating position and touring amenities. Its striking, muscular design is a head-turner, appealing to emotional desires. Practically, its reliability is strong for its class, and while not fuel-efficient, its commanding presence offers undeniable value for enthusiasts seeking a unique, high-performance experience.

The Bad

Potential owners should be aware of the 2020 Triumph Rocket 3 GT's substantial weight, which can make low-speed maneuvering challenging. Its sheer power can be intimidating for less experienced riders. Fuel economy is not a strong suit, and the high initial purchase price and potential for costly accessories can add to the overall ownership expense. Visibility in mirrors can also be limited.

2020 Triumph Rocket 3 GT: Quick Overview

  • Engine: Triumph's signature 2,458cc liquid-cooled, DOHC, inline-three-cylinder engine. This is the largest production motorcycle engine currently in the world.
  • Horsepower: 165 HP @ 6,000 RPM.
  • Torque: A massive 163 lb-ft (221 Nm) @ 4,000 RPM. This is the key selling point for the Rocket 3.
  • Fuel Economy: Approximately 35-40 MPG (US), depending on riding style and conditions. This is not a particularly fuel-efficient motorcycle due to its size and power.
  • 0-60 Times: While Triumph doesn't officially publish 0-60 times, independent tests and rider estimates place it in the sub-3-second range, a supercar-rivaling acceleration.
  • Towing Capacity: Not applicable. The Triumph Rocket 3 GT is not designed for towing.
  • Trim-Level Features (2020 Model):
    Rocket 3 R (Roadster):
    • More rider-focused ergonomics with higher foot controls.
    • Flat handlebars.
    • Standard Triumph Shift Assist (up and down quickshifter).
    • All the standard tech features.
    Rocket 3 GT (Grand Tourer):
    • More relaxed, laid-back ergonomics with forward-set foot controls.
    • Swept-back handlebars.
    • Comfortable sculpted pillion and rider seats.
    • Aesthetics-focused finishing touches like chrome detailing.
    • Comes standard with a small fly screen for wind deflection.
    • Optional luggage solutions available.
    • Both trims share the same incredible engine and core chassis components, along with a comprehensive electronics suite including multiple riding modes, ABS, and traction control.

2020 Triumph Rocket 3 GT Specifications

Vehicle Information
Year 2020
Make Triumph
Model Rocket 3 GT
Trim -
Style -
Type Motorcycle
Category Motorcycle
Manufacturing Details
Made In Thailand
Manufacturing City CHONBURI
Dimensions
Doors -
Curb Weight -
Gross Vehicle Weight Rating -
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating -
Engine & Performance
Engine 2458cc I3
Engine Size 2458L
Engine Cylinders 3
Transmission -
Transmission Type -
Transmission Speeds -
Drivetrain -
Additional Features
Anti-Brake System Standard
Steering Type -
Pricing
Manufacturer Suggested Retail Price (MSRP) -
Invoice Price -
Delivery Charges -

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What Problems Does the 2020 Triumph Rocket 3 GT Have?

The 2020 Triumph Rocket 3 GT, being a relatively new model, has not been subject to widespread reports of chronic mechanical failures. Triumph generally has a reputation for good build quality and reliability on their modern platforms. However, as with any high-performance machine, there are considerations. Some owners have reported minor issues related to the electronics, such as occasional glitches with the TFT display or connectivity. These are often resolved with software updates. The sheer power of the engine means that component wear might be accelerated if consistently ridden hard without proper maintenance, but this is true for most high-performance vehicles. There have been no major recalls specifically impacting the 2020 model year that suggest systemic design flaws. Some anecdotal reports mention brake feel being a bit soft for some riders given the bike's immense power and weight, though the braking hardware itself is top-spec Brembo. Long-term reliability concerns are generally low, with the engine expected to be robust given its understressed nature at typical cruising speeds. Owners are advised to follow Triumph's recommended maintenance schedule diligently, paying close attention to fluid changes and inspections. The weight of the motorcycle, while a characteristic, could potentially lead to increased wear on tires and suspension components over time if ridden aggressively in urban environments or during frequent low-speed maneuvers. Overall, the 2020 Rocket 3 GT is considered a reliable motorcycle, with issues typically being minor and addressable through routine servicing or dealer support. No specific model year variations have shown significant differences in reported problems for the 2020 iteration.

How long will the 2020 Triumph Rocket 3 GT last?

Estimating precise mileage for a 2020 Triumph Rocket 3 GT is challenging as it's still relatively new and often a weekend or special occasion bike for many owners. However, based on similar high-performance motorcycles and owner forums, a well-maintained Rocket 3 GT could realistically see 50,000 to 100,000 miles or more over its lifespan. The 2,458cc engine is known for its robust construction and is not highly stressed at cruising speeds, contributing to its long-term durability. Weaknesses over time might include potential wear on clutch components due to the immense torque and the significant weight of the motorcycle, particularly if ridden aggressively in stop-and-go traffic. Regular maintenance, including proper fluid changes and chain lubrication, is crucial. Suspension components might require servicing or replacement sooner than on lighter bikes, especially if subjected to rough roads or spirited riding. The overall long-term durability is expected to be excellent if basic care is provided.

What Technology & Safety Features are Included?

The 2020 Triumph Rocket 3 GT is equipped with a comprehensive suite of modern technology, focusing on rider control and convenience. The centerpiece is a full-color TFT instrument cluster, offering crisp visuals and customizable layouts. This display connects to a rider-mode system with various presets (Road, Rain, Sport, and customizable Rider mode) that adjust throttle response, traction control, and ABS intervention. Standard safety features include cornering ABS and lean-sensitive traction control, which work in conjunction with the Inertial Measurement Unit (IMU) to optimize performance and safety in various conditions. Keyless ignition is a premium convenience feature. Bluetooth connectivity is integrated, allowing for phone calls and music control via the instrument cluster, though there's no built-in speaker system, requiring a headset. Optional features can significantly enhance the experience, including Triumph's Shift Assist (up and down quickshifter), heated grips (standard on GT), a tire pressure monitoring system (TPMS), and various luggage solutions. Cruise control is also a common addition. As a motorcycle, official crash-test ratings like those for cars are not applicable. However, the bike is equipped with robust braking systems (dual 320mm discs with Brembo Stylema calipers at the front and a single 300mm disc with Brembo M4.32 caliper at the rear) and advanced electronic rider aids designed to mitigate potential accidents and enhance stability.

What Colors Options are Available?

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2020 Triumph Rocket 3 GT Prices and Market Value

When new, the 2020 Triumph Rocket 3 GT had an MSRP generally ranging from approximately $23,000 to $25,000, depending on the specific trim (R or GT) and any factory options chosen. Currently, on the used market, prices for a 2020 Triumph Rocket 3 GT typically fall between $17,000 and $21,000, highly dependent on mileage, condition, and the presence of desirable accessories. The Rocket 3 series depreciates at a moderate rate for a premium motorcycle. Factors affecting resale value include low mileage, pristine condition, a complete service history, and the inclusion of sought-after Triumph accessories like luggage, comfort seats, or performance exhausts. Unique color schemes can also play a role. The sheer power and unique nature of the Rocket 3 tend to hold its value well among enthusiasts.

2020 Triumph Rocket 3 GT Cost of Ownership

The 2020 Triumph Rocket 3 GT is a costly vehicle to own. Insurance premiums will be higher due to its performance, price, and the specialized nature of the bike. Fuel costs are significant, with its 2.5-liter engine averaging around 35-40 MPG. Maintenance costs are on par with other premium European motorcycles, requiring regular service intervals at authorized dealers. Repairs, especially for specialized components or bodywork, can be expensive. Long-term ownership costs are substantial, making it a statement machine for those who can afford the investment rather than an economical choice. Routine maintenance and care are essential to mitigate larger repair bills.

2020 Triumph Rocket 3 GT Fuel Efficiency

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

2020 Triumph Rocket 3 GT Insurance

Insurance for a 2020 Triumph Rocket 3 GT is moderately priced, reflecting its status as a Motorcycle with strong safety ratings and
reasonable repair costs.

How Does the 2020 Triumph Rocket 3 GT Compare to Other Motorcycle?

The 2020 Triumph Rocket 3 GT occupies a unique niche, making direct comparisons challenging. Its primary rival is arguably itself in the form of the Rocket 3 R. However, when considering large-displacement, high-performance cruisers, potential alternatives include:

Harley-Davidson Fat Bob 114: Offers strong torque from its Milwaukee-Eight engine and a more traditional cruiser aesthetic. It's generally more accessible in terms of price and offers a vast aftermarket. Performance is strong but doesn't match the Rocket 3's sheer output or acceleration. Reliability is generally good.

Indian Springfield/Roadmaster: These are larger, touring-focused machines with significant torque from their Thunderstroke engines. They offer more comfort and luggage capacity for long-distance riding but are heavier and less agile than the Rocket 3 GT. Performance is more about effortless cruising than outright acceleration. Reliability is typically excellent.

Ducati Diavel (previous generations): While a power cruiser with a more sporty character, the Diavel offers immense performance and cutting-edge technology. It's lighter and more agile than the Rocket 3 but has a smaller engine displacement and a different riding feel. Its focus is more on sporty handling and aggressive styling.

Comparison: The Rocket 3 GT stands out with its unparalleled engine size and torque output, delivering performance figures that few other production motorcycles can match. Its technology suite is modern and comprehensive. Reliability is generally strong, comparable to or better than some American counterparts. However, its price point is higher than many competitors.

Recommendations:
- For riders prioritizing raw acceleration and a massive engine, the Rocket 3 GT is unmatched.
- If a more traditional cruiser experience with a vast dealer network and aftermarket is desired, the Harley-Davidson Fat Bob 114 is a solid choice.
- For extensive touring with comfort and classic styling, consider the Indian Springfield or Roadmaster.
- For a sportier, more aggressive power cruiser experience, an earlier generation Ducati Diavel might be considered, though its focus is different.

Final Verdict: Is the 2020 Triumph Rocket 3 GT a Good Motorcycle?

The 2020 Triumph Rocket 3 GT is an ideal machine for experienced riders who crave outrageous power and torque, and appreciate a unique, head-turning design. It's for those who want a motorcycle that delivers supercar-level acceleration and a commanding presence on the road. It's not for the faint of heart or those seeking a lightweight, nimble bike for tight maneuvers.

Whether it's worth buying depends heavily on individual priorities and budget. As a new purchase, it represents a significant investment. However, as a used buy, the value proposition improves considerably. The GT trim is recommended for riders who anticipate longer rides or desire the added comfort and touring amenities over the sportier R model. For those who can handle its immense power and weight, and appreciate its exclusivity, the Rocket 3 GT is a truly special motorcycle that offers an unforgettable riding experience and is worth considering, particularly in the used market for better value.

2020 Triumph Rocket 3 GT Owner Reviews

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Cathleen V

Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.