Harley-Davidson Eight-valve racer

⚠️ Things to consider

• Limited Performance: While innovative for its time, the Eight-valve racer may not match the performance levels of modern motorcycles, making it less appealing for those seeking high-speed thrills.
• Maintenance Complexity: The eight-valve engine design can be more complex to maintain and repair than simpler configurations, potentially leading to higher upkeep costs and requiring specialized knowledge.
• Comfort and Ergonomics: Racing motorcycles of this era, including the Eight-valve racer, often prioritize performance over rider comfort, resulting in a less comfortable riding position for long distances.
• Rarity and Parts Availability: Being a vintage motorcycle, finding original parts for repairs or restorations can be challenging, which may deter potential owners or collectors.
• Limited Rider Technology: The lack of modern rider aids, such as advanced braking systems or suspension technology, means the Eight-valve racer might not handle as predictably as contemporary bikes, posing a challenge for riders not accustomed to vintage machines.

⚖️ Comparison & Competition

• Indian Scout (1920s)
• The Indian Scout was a popular model during the early 1920s, known for its agility and performance. With a V-twin engine and a lightweight frame, it was designed for both speed and maneuverability, making it a favorite among racers and enthusiasts alike.
• BSA Gold Star (1938)
• The BSA Gold Star was renowned for its performance on the track and was a dominant force in motorcycle racing during its time. With a single-cylinder engine that offered excellent power-to-weight ratio and a sleek design, it became a symbol of British engineering excellence.
• Norton Manx (1949)
• The Norton Manx is an iconic racing motorcycle that became famous in the Isle of Man TT races. Featuring a single-cylinder engine and a lightweight chassis, the Manx was engineered for high performance and handling, making it a coveted choice for racers.
• Moto Guzzi V8 (1955)
• The Moto Guzzi V8 was an innovative racing motorcycle that featured a unique 500cc V8 engine. Designed for competitive racing, it boasted advanced engineering for its time, including a lightweight frame and distinctive aerodynamic fairings, achieving notable success in various competitions.
• Triumph Speed Twin (1938)
• The Triumph Speed Twin revolutionized the motorcycle industry with its parallel twin engine, offering a perfect balance of power and handling. Known for its classic styling and reliability, the Speed Twin became a favorite among riders seeking both performance and comfort. These motorcycles, like the Harley-davidson Eight-valve Racer, reflect the engineering and design ethos of their respective eras while offering unique characteristics that appealed to racers and enthusiasts

Rule of thumb: under 125cc / 15HP → A1, under 47HP → A2, above → A.

Estimated average for 1000cc class: 35-50 mpg (5.0-7.0 L/100km)

Insurance grouping for Harley-Davidson Eight-valve racer (1000cc):

• 📋 Group 15-20+ — performance class, higher premiums
🧮

Insurance Calculator (UK est.)

⌄

Personalised premium estimate for the Harley-Davidson Eight-valve racer (UK rates):

Your Age

Years Licensed

No-Claims Years 0 years 1-2 years 3-4 years 5+ years 9+ years

Location London / Major city Mid-size city Town Rural

💰 CALCULATE PREMIUM

💡 Estimate based on UK market averages. For real quotes, compare on Compare the Market, MoneySuperMarket, GoCompare.

💰

Price Estimate

⌄

Estimated price range for the Harley-Davidson Eight-valve racer based on comparable motorcycles:

AVERAGE

$3,174

📊 Category-based (9 motorcycles) · Approximate (USD)

🛒

Buy New & Used

⌄

Find new and used Harley-Davidson Eight-valve racer 1921 listings:

🛒 eBay Motors 🏍️ Cycle Trader 🇬🇧 Auto Trader UK 🔍 Google Listings

💡 Third-party listings. MotoBike Info is informational only.

• 👤 Final premium varies by rider age, history, location.