1981 Honda CB400 Overview, Reviews, Ratings & Specs
The 1981 Honda CB400 is a classic Japanese motorcycle known for its balanced performance and enduring appeal. Belonging to Honda's iconic CB series, this model typically featured a sporty yet versatile standard/naked bike body style. While specific trims for the 1981 model year might vary regionally, the CB400 line generally offered accessible and enjoyable riding experiences. Its popularity stems from Honda's reputation for reliability and the bike's smooth, capable four-cylinder engine, making it a favored choice for both commuting and spirited riding.
The Good
The 1981 Honda CB400 excels with its peppy yet manageable performance, legendary Honda reliability, and comfortable riding posture. Its timeless design appeals to enthusiasts, while its fuel efficiency and low running costs satisfy practical buyers. This motorcycle offers an engaging ride with peace of mind.
The Bad
Common areas to watch out for on a 1981 Honda CB400 include potential corrosion on the exhaust system and frame, especially if not maintained diligently. Electrical connectors can sometimes degrade over time, leading to minor electrical gremlins. Worn suspension components and carburetor synchronization issues are also worth checking.
1981 Honda CB400: Quick Overview
- Engine Options: The 1981 Honda CB400 typically featured a 395cc, air-cooled, four-stroke, DOHC inline-four engine. Some markets might have had slight variations, but the core configuration remained consistent.
- Horsepower: Horsepower figures for the 1981 CB400 generally ranged from approximately 35 to 40 horsepower, depending on specific tuning and exhaust systems. This provided ample power for its class.
- Fuel Economy: Fuel economy was a strong point for the CB400. Owners commonly reported figures in the range of 40-50 miles per gallon (MPG), making it an economical choice for commuting and longer rides.
- 0-60 Times: While official 0-60 mph times were not always prominently advertised for motorcycles of this era, estimates suggest it could achieve this sprint in the 6-8 second range, offering brisk acceleration.
- Towing Capacity: As a motorcycle, the 1981 Honda CB400 does not have a towing capacity in the automotive sense. It is designed to carry a rider and potentially a passenger or luggage.
- Trim-Level Features: The 1981 Honda CB400 was generally offered in a single, well-equipped standard trim. Key features typically included:
- A comfortable, upright riding position ideal for everyday use.
- A robust, reliable inline-four engine with Honda's signature smoothness.
- Disc brakes (usually front, drum rear) offering adequate stopping power for the era.
- A comprehensive instrument cluster with speedometer, tachometer, and indicator lights.
- Chrome accents and classic styling cues common to Honda motorcycles of the period.
- Adjustable suspension (front forks and rear shocks) to suit rider preference and load.
- Electric start for convenience.
- Shaft drive or chain drive, depending on the specific variant, though chain drive was more common for this model.
- A comfortable, upright riding position ideal for everyday use.
1981 Honda CB400 Specifications
Vehicle Information
| Year | 1981 |
| Make | Honda |
| Model | CB400 |
| Trim | - |
| Style | - |
| Type | Motorcycle |
| Category | Motorcycle |
Manufacturing Details
| Made In | Japan |
| Manufacturing City | HAMAMATSU |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 395CC |
| Engine Size | 395L |
| 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 | - |
Vehicle History Report
Vehicle
Specifications
Specifications
Ownership
History
History
All History
Events
Events
NMVTIS Title
History Check
History Check
Salvage/Rebuilt
Check
Check
Accident
Check
Check
Theft
Check
Check
Open Lien
Check
Check
Past Sale
Listings
Listings
Safety
Recalls
Recalls
Odometer
Check
Check
Market Price
Analysis
Analysis
What Problems Does the 1981 Honda CB400 Have?
The 1981 Honda CB400 is generally lauded for its robust build quality and long-term reliability, a hallmark of Honda engineering from that era. However, like any vintage motorcycle, it is not immune to issues that arise with age and mileage. One frequently reported concern is related to the fuel system, particularly carburetors. Over time, fuel passages can become clogged with varnish and debris, especially if the motorcycle has been sitting for extended periods without proper fuel stabilization or draining. This can lead to hard starting, rough idling, and inconsistent performance. Rebuilding or cleaning the carburetors is a common maintenance task.
Electrical components are another area where age can manifest problems. Wiring harnesses, connectors, and ignition components can degrade. For instance, brittle insulation on wires, corroded bullet connectors, or failing stator windings can lead to charging issues, weak spark, or intermittent electrical faults. The ignition switch and kill switch can also become worn or corroded, causing erratic behavior.
The braking system, while functional, might require attention on older models. The rubber components in brake lines and master cylinders can harden and crack, leading to reduced braking effectiveness or leaks. Brake calipers can seize due to corrosion and lack of use. Regular flushing and replacement of brake fluid are essential.
Suspension components, including fork seals and rear shock absorbers, can also wear out. Leaking fork seals will cause oil to weep, and worn shock absorbers will result in a bouncy or uncontrolled ride. Replacing these components is often necessary for optimal handling and comfort.
While specific recalls for the 1981 Honda CB400 are not extensively documented in widely available public databases for this particular model year, it is always prudent for owners of older vehicles to check with official Honda resources or relevant motorcycle forums for any safety advisories that might have been issued retrospectively or for related models that could share components. The long-term reliability of the CB400 is generally excellent, provided it has received consistent maintenance. The engine is robust, and the transmission is typically very durable. However, neglect, such as infrequent oil changes or not addressing minor issues promptly, can accelerate wear and lead to more significant problems down the line.
Electrical components are another area where age can manifest problems. Wiring harnesses, connectors, and ignition components can degrade. For instance, brittle insulation on wires, corroded bullet connectors, or failing stator windings can lead to charging issues, weak spark, or intermittent electrical faults. The ignition switch and kill switch can also become worn or corroded, causing erratic behavior.
The braking system, while functional, might require attention on older models. The rubber components in brake lines and master cylinders can harden and crack, leading to reduced braking effectiveness or leaks. Brake calipers can seize due to corrosion and lack of use. Regular flushing and replacement of brake fluid are essential.
Suspension components, including fork seals and rear shock absorbers, can also wear out. Leaking fork seals will cause oil to weep, and worn shock absorbers will result in a bouncy or uncontrolled ride. Replacing these components is often necessary for optimal handling and comfort.
While specific recalls for the 1981 Honda CB400 are not extensively documented in widely available public databases for this particular model year, it is always prudent for owners of older vehicles to check with official Honda resources or relevant motorcycle forums for any safety advisories that might have been issued retrospectively or for related models that could share components. The long-term reliability of the CB400 is generally excellent, provided it has received consistent maintenance. The engine is robust, and the transmission is typically very durable. However, neglect, such as infrequent oil changes or not addressing minor issues promptly, can accelerate wear and lead to more significant problems down the line.
How long will the 1981 Honda CB400 last?
Based on owner data and the inherent build quality of Honda motorcycles from this era, a well-maintained 1981 Honda CB400 can realistically achieve well over 100,000 miles. Many owners report their CB400s still running strong at 50,000 to 80,000 miles with regular oil changes, filter replacements, and periodic tune-ups. The engine is exceptionally durable, and the overall chassis is robust. Weaknesses that emerge over time are typically related to wear-and-tear on non-engine components like suspension, brakes, and electrical connections, as detailed in prompt 5. With consistent care, including attention to the aforementioned areas and proper storage, these bikes are known for their longevity and can provide decades of reliable service, proving their exceptional long-term durability.
What Technology & Safety Features are Included?
When discussing the 1981 Honda CB400, it is crucial to frame its features within the context of its time. This motorcycle predates the advanced electronic technologies commonly found in modern vehicles. Therefore, its built-in tech and entertainment systems are virtually non-existent in the way we understand them today.
Technology: The technology present is purely mechanical and functional. This includes a reliable CDI (Capacitor Discharge Ignition) system for spark generation, which was considered modern and dependable for its era. The engine management is purely mechanical via carburetors. There is no onboard computer, digital displays, or connectivity features.
Entertainment: Entertainment for the rider is derived from the riding experience itself – the sound of the engine, the feel of the road, and the freedom of the open air. There are no audio systems, screens, or infotainment interfaces.
Driver-Assistance Features: Driver-assistance systems as we know them today (like ABS, traction control, cruise control) were not available on motorcycles of this vintage. The rider is fully in control of all aspects of operation.
Safety Features: Safety features are limited to the fundamental mechanical aspects of the motorcycle. This typically included:
Optional Features: Optional accessories common for this era might have included things like a rear luggage rack, saddlebags, a small windscreen for wind deflection, or engine guards. These were primarily for utility or minor comfort enhancements, not technology upgrades.
Crash-Test Ratings: Motorcycles, unlike cars, are not subjected to standardized crash-test ratings by organizations like NHTSA or IIHS. Safety in motorcycle riding is predominantly the responsibility of the rider's skill, awareness, protective gear, and the fundamental mechanical integrity of the machine.
Technology: The technology present is purely mechanical and functional. This includes a reliable CDI (Capacitor Discharge Ignition) system for spark generation, which was considered modern and dependable for its era. The engine management is purely mechanical via carburetors. There is no onboard computer, digital displays, or connectivity features.
Entertainment: Entertainment for the rider is derived from the riding experience itself – the sound of the engine, the feel of the road, and the freedom of the open air. There are no audio systems, screens, or infotainment interfaces.
Driver-Assistance Features: Driver-assistance systems as we know them today (like ABS, traction control, cruise control) were not available on motorcycles of this vintage. The rider is fully in control of all aspects of operation.
Safety Features: Safety features are limited to the fundamental mechanical aspects of the motorcycle. This typically included:
- Braking System: A front disc brake and a rear drum brake were standard, providing adequate stopping power for the performance of the bike. While functional, they are not comparable to modern ABS systems.
- Lighting: A headlight, taillight, and turn signals were provided for visibility and signaling.
- Chassis Design: The frame was designed to be rigid and stable, providing a solid platform for the rider.
Optional Features: Optional accessories common for this era might have included things like a rear luggage rack, saddlebags, a small windscreen for wind deflection, or engine guards. These were primarily for utility or minor comfort enhancements, not technology upgrades.
Crash-Test Ratings: Motorcycles, unlike cars, are not subjected to standardized crash-test ratings by organizations like NHTSA or IIHS. Safety in motorcycle riding is predominantly the responsibility of the rider's skill, awareness, protective gear, and the fundamental mechanical integrity of the machine.
What Colors Options are Available?
We’re working on this section!
In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
1981 Honda CB400 Prices and Market Value
When new in 1981, the Honda CB400 would have retailed for a price competitive within the mid-size motorcycle segment, likely in the range of $2,000 to $2,500 USD, adjusted for inflation this is roughly $6,000-$7,500 today. The CB400 experienced a relatively standard depreciation curve initially. However, as a classic Honda, its value has stabilized and, in many cases, appreciated over time, especially for well-maintained examples. Current used market prices for a 1981 Honda CB400 can vary significantly, typically ranging from $1,500 to $4,000 or more for pristine, low-mileage, or fully restored machines. Factors affecting resale value include the bike's condition (cosmetic and mechanical), originality of parts, mileage, service history, and overall desirability among collectors and enthusiasts. A fully original, unmolested bike in excellent condition will command a premium.
1981 Honda CB400 Cost of Ownership
The 1981 Honda CB400 is generally economical to own. Insurance costs are typically low due to its age and classification as a classic or vintage motorcycle, especially if only used for recreational purposes. Fuel consumption is excellent, averaging 40-50 MPG, making it very affordable to run. Maintenance costs are moderate; regular oil changes, chain lubrication (if chain-driven), and filter replacements are standard. Repairs are often straightforward for mechanically inclined owners, and parts, while sometimes requiring a bit of searching for specific items, are generally available and not prohibitively expensive. Overall, it's a cost-effective and rewarding motorcycle to own and maintain.
1981 Honda CB400 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
1981 Honda CB400 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
1981 Honda CB400 Insurance
Insurance for a 1981 Honda CB400 is moderately priced, reflecting its status as a Motorcycle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1981 Honda CB400 Compare to Other Motorcycle?
The 1981 Honda CB400 occupied a competitive space in the motorcycle market, often rivaling other mid-sized Japanese bikes. Key competitors included models like the Yamaha XS400, Suzuki GS450, and Kawasaki KZ440.
Performance: In terms of performance, the CB400's inline-four engine generally offered a smoother and more refined power delivery than some of its twin-cylinder competitors like the XS400 or GS450, which might have offered a bit more low-end torque but could also be more vibey. The CB400 was known for its balanced power output, making it agile and responsive.
Features: Features were fairly comparable across this segment in 1981. Most bikes offered similar braking systems (front disc, rear drum), electric start, and basic instrumentation. The CB400's DOHC engine was a strong selling point for Honda, signifying a slightly more performance-oriented design compared to some SOHC rivals.
Reliability: Honda's reputation for reliability was a significant advantage. While all Japanese manufacturers produced dependable machines, Honda often stood out for its robust engineering and longevity. The CB400 was no exception, often proving more durable and less prone to minor issues than some competitors when subjected to similar usage.
Price: Pricing was generally quite competitive. The CB400 was typically positioned to offer excellent value for its performance and build quality, often being priced similarly to its direct rivals.
Alternatives:
Performance: In terms of performance, the CB400's inline-four engine generally offered a smoother and more refined power delivery than some of its twin-cylinder competitors like the XS400 or GS450, which might have offered a bit more low-end torque but could also be more vibey. The CB400 was known for its balanced power output, making it agile and responsive.
Features: Features were fairly comparable across this segment in 1981. Most bikes offered similar braking systems (front disc, rear drum), electric start, and basic instrumentation. The CB400's DOHC engine was a strong selling point for Honda, signifying a slightly more performance-oriented design compared to some SOHC rivals.
Reliability: Honda's reputation for reliability was a significant advantage. While all Japanese manufacturers produced dependable machines, Honda often stood out for its robust engineering and longevity. The CB400 was no exception, often proving more durable and less prone to minor issues than some competitors when subjected to similar usage.
Price: Pricing was generally quite competitive. The CB400 was typically positioned to offer excellent value for its performance and build quality, often being priced similarly to its direct rivals.
Alternatives:
- Similar Alternatives: If seeking a similar experience, one could consider the Yamaha XS400 (especially the twin-cylinder models for a different character), Suzuki GS450, or Kawasaki KZ440. These offer comparable displacement and general functionality but with distinct engine characteristics and styling.
- Potentially Better Alternatives (depending on priorities): For those prioritizing outright power in a similar displacement, some might look at slightly larger or more performance-focused models of the era, though this would likely come at a higher price point and potentially compromise some of the CB400's renowned fuel efficiency and ease of use. For a more modern classic feel, later iterations of Honda's CB line or even models from other manufacturers that have since gained classic status could be considered, but these would differ significantly in terms of technology and feel. The 1981 CB400 remains a strong contender for its balanced all-around capabilities.
Final Verdict: Is the 1981 Honda CB400 a Good Motorcycle?
The 1981 Honda CB400 is ideal for beginner to intermediate riders seeking a reliable, manageable, and stylish classic motorcycle. It's also perfect for experienced riders looking for an economical and fun commuter or a weekend cruiser that won't break the bank. It is absolutely worth buying, especially in the used market, given its legendary Honda reliability and enduring appeal. The conditions under which it is most worthwhile are when purchasing a well-maintained, preferably stock example with good service history. Given its age, expect some minor cosmetic wear or the need for basic maintenance like carburetor cleaning or brake adjustments. It represents excellent value as a pre-modern classic, offering a pure and engaging riding experience without complex electronics.
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.