TRIUMPH E12356 Cylinder Head

( Manufacturer Part Number: E12356 ), ( Engine Type: 4-stroke ), ( Type: Cylinder Head ), ( Machine Type: Street Motorcycle ), ( Country/region Of Manufacture: United Kingdom )

Review TRIUMPH Cylinder Head fits BONNEVILLE 650 1971–1972

Triumph Bonneville 650 Cylinder Head (E12356) for 1971 and 1972 Models

The Triumph Bonneville 650 cylinder head (E12356) is an essential component of the classic British motorcycle, hailing from the iconic Bonneville series produced between 1971 and 1972. This cylinder head is engineered with great precision to deliver optimal performance and reliability, making it a sought-after part for enthusiasts and restorers.

This cylinder head features an intricately designed combustion chamber that ensures efficient fuel-air mixture ignition for a powerful and smooth engine operation. Its port design enhances the intake and exhaust flow, contributing to improved engine breathing and horsepower. The head also comes with pre-machined valves seats, allowing for easy and accurate installation.

Constructed from high-quality aluminum alloy, this cylinder head offers excellent heat dissipation, ensuring that the engine maintains an ideal operating temperature. Its robust design withstands the rigors of daily riding, making it a dependable choice for your Triumph Bonneville 650.

- Triumph Bonneville T120 (1971-1972)

- Triumph Bonneville T120R (1971-1972)

It is essential to note that while this cylinder head is designed to be a direct replacement, it is recommended to verify the compatibility with your specific motorcycle before installation. Always consult your vehicle's service manual or a qualified mechanic for guidance during the installation process.

In conclusion, the Triumph Bonneville 650 cylinder head (E12356) is a high-quality, meticulously engineered component that delivers impressive performance, reliability, and durability for your classic Bonneville motorcycle. Whether you are restoring your beloved bike to its former glory or looking to enhance its power, this cylinder head is an excellent investment for your Triumph Bonneville 650.

The Triumph Bonneville 650 motorcycle, produced between 1971 and 1972, is known for its classic design and reliable performance. When it comes to buying a new cylinder head for this model, here are some pros and cons that might help you make an informed decision.

1. Improved Performance: A new cylinder head can help improve the overall performance of your Triumph Bonneville 650. It can lead to increased power, better fuel efficiency, and smoother engine operation.

2. Extended Engine Life: A new cylinder head can help extend the life of your engine by ensuring that all cylinders are functioning optimally. This can save you money in the long run by reducing the need for costly engine repairs.

3. Cosmetic Appeal: Installing a new cylinder head can give your Triumph Bonneville 650 a fresh, new look. It can be a great way to restore the bike to its original condition or give it a unique custom look.

1. Cost: Replacing a cylinder head on a motorcycle can be a costly endeavor. You'll need to factor in the cost of the new cylinder head, as well as the cost of any necessary labor or tools.

2. Time: Installing a new cylinder head can be a time-consuming process. If you plan on doing the installation yourself, be prepared to spend several hours on the project.

3. Complexity: Installing a new cylinder head can be a complex process, especially if you're not experienced in motorcycle mechanics. It requires a good understanding of engine mechanics and the ability to work with precision.

The decision to buy a new cylinder head for your Triumph Bonneville 650 depends on your specific circumstances and priorities. If you're looking to improve performance, extend engine life, or give your bike a fresh look, then a new cylinder head may be worth the investment. However, if you're on a tight budget or are not comfortable working on your bike yourself, then you may want to consider other options. Ultimately, it's important to weigh the pros and cons carefully and make an informed decision based on your individual needs and circumstances.

If you've decided that a new cylinder head is the right choice for your Triumph Bonneville 650, then it's important to find a reputable supplier and installer. Look for a supplier that specializes in motorcycle parts and has good customer reviews. If possible, ask for recommendations from other Triumph Bonneville 650 owners or join a motorcycle forum to get advice from experienced mechanics. When it comes to installation, consider hiring a professional mechanic to ensure that the job is done correctly and efficiently.

Details:

Valves reground existing valves and valve springs, guides were good as is. Original part not reproduction. No broken fins all threads look good. Mid year 1972 Triumph went to head with push in pipes this still has screw exhaust pipe adaptors.

Part # E12356. Very good condition ready to install. Please look closely at the pictures and ask questions. Triumph Bonneville 650cc cylinder head 1971 early 1972 TR120R.

part #: e12356 prices

• $279.99-$299.95

specifications cylindermotorcycleiz:

• for models: 650, Bonneville
• for makes: Triumph
• for years: 1971-1972
• mpn: E12356
• engine type: 4-stroke
• type: Cylinder Head
• machine type: Street Motorcycle
• country/region of manufacture: United Kingdom

shipping cylindermotorcycleiz:

• type: Calculated
• class: Standard
• carrier: UPS
• service: UPS Ground
• transit: 4-7 Days
• cost: $17.55

general cylindermotorcycleiz:

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

seller cylindermotorcycleiz:

• rating: 100.0%
• # reviews: 5866
• city: Kalamazoo, Michigan

payments cylindermotorcycleiz:

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

returns cylindermotorcycleiz:

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

offer cylindermotorcycleiz:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: July 4, 2025
• quantity: 1

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