TRIUMPH 70-9418 Cylinder Head

( Manufacturer Part Number: 70-9418 ), ( Engine Type: 4-stroke ), ( Type: Cylinder Head ), ( Vintage Part: Yes )

Review TRIUMPH Cylinder Head fits 1969–1970

Introducing the Triumph 70-9418 cylinder head, a vintage automotive component that embodies the classic charm and engineering excellence of the 1969 Triumph motorcycle. This cylinder head is a must-have for restorers, collectors, and enthusiasts of Triumph's rich history.

The Triumph 70-9418 cylinder head is designed for Triumph Bonneville T120 and T120R models produced in 1969. It is a 70 cubic inch (1,166 cc) cylinder head, featuring an overhead valve configuration with two valves per cylinder. The valves are operated by a single overhead camshaft, providing efficient and responsive engine performance.

The cylinder head comes in a cast iron construction, which not only adds to its classic appeal but also ensures robustness and durability. The combustion chamber design is hemispherical, promoting efficient fuel-air mixing and optimal combustion. The head also includes a pair of large, finned exhaust ports that help in efficient exhaust gas flow.

The Triumph 70-9418 cylinder head comes with new inlet and exhaust valves, as well as new valve guides and seats. These new components ensure a proper seal and optimal valve function, contributing to improved engine performance and longevity.

The cylinder head comes fully reconditioned and ready to be installed. It undergoes a thorough cleaning process, followed by machining to ensure a flat and true surface for proper sealing. The cylinder head also receives new gaskets and hardware to ensure a proper installation.

The Triumph 70-9418 cylinder head is a perfect addition to any Triumph Bonneville T120 or T120R restoration project or for those who seek to maintain the authenticity and performance of their vintage Triumph motorcycle. With its rich history and proven performance, this cylinder head is a valuable investment for any Triumph enthusiast.

Buying a Triumph 70-9418 1969 70 cylinder head involves considering its potential benefits and drawbacks. Here are some pros and cons to help you make an informed decision.

1. Authenticity and Originality: This cylinder head is an original part for a classic Triumph motorcycle. It may add value to your restoration project or collection.

2. Performance: A properly rebuilt or new cylinder head can improve engine performance, potentially leading to increased horsepower and torque.

3. Durability: A well-maintained or rebuilt cylinder head can last for many years, saving you from having to buy another one in the future.

1. Cost: Original Triumph cylinder heads can be expensive, especially if they are hard to find or in high demand.

2. Availability: Finding a good quality, used cylinder head can be challenging. It may require extensive research and networking with other Triumph enthusiasts.

3. Time and Effort: Rebuilding or installing a cylinder head can be a complex and time-consuming process, requiring specialized tools and knowledge.

Buying a Triumph 70-9418 1969 70 cylinder head can be a worthwhile investment for those restoring a classic motorcycle or looking to improve engine performance. However, it comes with potential costs, availability challenges, and time commitment. Thoroughly research the market, assess your skills and resources, and weigh the pros and cons carefully before making a decision.

If you have the necessary skills, resources, and budget, purchasing an original Triumph 70-9418 1969 70 cylinder head could be a rewarding experience. Alternatively, consider purchasing a rebuilt cylinder head from a reputable Triumph specialist or considering aftermarket alternatives to save on cost and time.

Details:

70-9418 This is a 1969 - 70 Triumph T120 Bonneville used cylinder head. All threads appear to be in good shape. Note the chambered, deep push rod tube surface in last photo indicating 69-70 year. There is some scaring in one combustion chamber from probably a broken valve.

Not perfect but can be used. Lower fins have been trimmed down a bit, but not by much.

part #: 709418 prices

• $69.00-$299.95

specifications cylindermotorcycleiz:

• for makes: Triumph
• for years: 1969-1970
• mpn: 70-9418
• engine type: 4-stroke
• type: Cylinder Head
• vintage part: Yes

shipping cylindermotorcycleiz:

• carrier: USPS
• class: Standard
• type: Calculated
• transit: 3-8 Days
• cost: $9.80
• service: USPS Ground Advantage

offer cylindermotorcycleiz:

• availability: In Stock
• quantity: 1
• started: October 15, 2025
• options: Ship-to-home
• best offers: True
• sold: 0

returns cylindermotorcycleiz:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

general cylindermotorcycleiz:

• condition: Used
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

seller cylindermotorcycleiz:

• rating: 100.0%
• # reviews: 781
• city: Madison, Wisconsin

payments cylindermotorcycleiz:

• wallet: Apple-pay
• credit card: Discover
• other

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