5 Common Triumph Thruxton 900 Problems And How To Fix Them

Triumph Thruxton 900 may face issues with its rectifier regulator and starter motor. Triumph Thruxton 900, a café racer variant of the Bonneville series, has won the hearts of riders across the world with its classic styling and versatile performance.

However, as with any motorcycle, the Thruxton 900 is not immune to problems. The rectifier-regulator and starter motor are known to be the common issues owners may face. A faulty rectifier-regulator can lead to battery drain or overcharging, while a defective starter motor can result in difficulty in starting the bike.

These problems can be addressed by replacing faulty parts with high-quality replacements and ensuring proper maintenance. In this article, we will take a closer look at these issues and explore possible solutions.

5 Common Triumph Thruxton 900 Problems And How To Fix Them

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Bulky And Hefty Clutch

During the lifespan of a triumph Thruxton 900, one might come across various issues. One notable problem is the bulky and hefty clutch that could bring unnecessary headaches to riders. Several factors, including a worn-out clutch cable or plates, can cause this issue.

Symptoms might include difficulty in shifting gears, loss of acceleration, and odd noises. To fix this, firstly, check the clutch cable. If necessary, replace the cable and adjust the clutch lever. Next, ensure the clutch plates are well lubricated, and if not, replace them.

Lastly, avoid the problem by having regular maintenance and ensuring the clutch plates are well lubricated.

Electrical Failure

Triumph Thruxton 900’s electrical failure problem can be caused by numerous factors. Symptoms may include the bike not starting, headlights not turning on, or flickering turn signals. Fixing this problem involves checking and tightening loose connections, repairing or replacing damaged components, and testing the battery and electrical system.

To prevent this issue from happening in the future, regular maintenance is essential. Also, keep an eye on the bike’s battery health, and don’t overload the electrical system with add-ons like heated grips or aftermarket lighting. By taking these preventive measures, triumph thruxton 900 owners can ride their bikes with peace of mind, realizing that their electrical systems will operate flawlessly.

Uneven Idling

Triumph Thruxton 900 problems can be frustrating, and uneven idling is one of them. This issue can happen due to many factors like faulty carburetor, dirty air filter, or damaged spark plugs. Common signs of uneven idling are stalling, revving, and shaking.

The good news is that fixing this problem can be easy. It only requires cleaning or replacing the affected parts with new ones. However, to avoid this issue in the future, regular maintenance is crucial. Ensure you only use high-quality parts during replacements and fix any underlying issue before it becomes worse.

By adhering to these tips, your triumph Thruxton 900 should run smoothly.

Brake System Issues

The brake system of triumph thruxton 900 can develop issues due to various reasons. The main cause may be the lack of brake fluid or air in the lines. Symptoms of this issue can include a spongy brake lever, reduced stopping power, or brake drag.

To fix this issue, one can bleed the brakes, change the brake pads, or replace the brake lines. However, it’s best to seek professional assistance if one is not familiar with the process. To avoid these problems, it’s essential to perform regular maintenance, avoid harsh braking, and inspect the brake system before every ride.

Remember, maintaining the brake system can be a matter of life and death for motorcyclists!

Overheating Engine

If you own a triumph thruxton 900, you may experience an overheating engine. The problem is primarily caused by a faulty fan or clogged radiator, which can lead to symptoms such as high engine temperature and coolant loss. Fortunately, fixing the problem is fairly straightforward with some basic steps, including checking the fan’s function, flushing the radiator, and replacing the thermostat if necessary.

To prevent the issue in the future, it’s essential to maintain a regular service schedule. Stick to manufacturer-recommended coolant and antifreeze levels, keep an eye on fluid levels and signs of leakage, and have your bike inspected by a professional if you notice any changes in performance.

By following these simple steps, you can help ensure your bike runs smoothly and avoid potential engine damage caused by overheating.

Frequently Asked Questions

What Are Some Common Problems With Triumph Thruxton 900?

Some common problems seen in triumph thruxton 900 bikes are overheating, clutch issues, and electrical failures.

How To Troubleshoot The Overheating Issue In Triumph Thruxton 900?

Check the coolant level first, then the radiator cap, thermostat, and water pump belt.

What Causes The Clutch Issues In Triumph Thruxton 900?

Inadequate lubrication or wear and tear of the clutch plates are the primary causes.

Should I Worry About Electrical Problems In My Triumph Thruxton 900?

While electrical problems can be frustrating, they aren’t considered a significant issue in most cases.

Can I Fix The Problems In My Triumph Thruxton 900 On My Own?

While some issues can be resolved with basic tools, seeking professional expertise for major repairs is always best.


Overall, the triumph thruxton 900 is a classic bike that offers an unforgettable riding experience. However, it comes with its own set of challenges that can affect its performance. From the issues with starting the bike and the oil leaks to problems with the brakes and gearbox, owners of this model have reported various problems.

Nonetheless, some of these challenges can be resolved with the help of a professional mechanic or by using genuine spare parts. Additionally, regular maintenance and inspections can help to avoid potential issues. If you are thinking of owning a triumph thruxton 900, it is important to consider these factors and be prepared for the responsibility that comes with owning a classic bike.

Overall, it is a bike that is worth investing in and can offer a unique and exciting riding experience.


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