The Bolzen Krümmerflansch GSF 1200 is a crucial component in the exhaust system of the iconic BMW R 1200 GS, R 1200 R, and R 1200 RS motorcycles. This flange connects the exhaust manifold to the catalytic converter and plays a vital role in ensuring the bike's performance, efficiency, and safety.
The Bolzen Krümmerflansch GSF 1200 serves several essential functions:
The Bolzen Krümmerflansch GSF 1200 is specifically designed for use with BMW R 1200 GS, R 1200 R, and R 1200 RS motorcycles manufactured from 2004 to 2018. It is made from durable stainless steel and features a 2-bolt mounting pattern.
Like any other component, the Bolzen Krümmerflansch GSF 1200 can fail over time, leading to various issues. Common signs of failure include:
Regular maintenance and inspection can help prevent premature failure of the Bolzen Krümmerflansch GSF 1200. Here are some tips:
If the Bolzen Krümmerflansch GSF 1200 fails or becomes damaged, it must be replaced to ensure proper exhaust system operation. The replacement process involves the following steps:
Materials Required:
Step-by-Step Instructions:
Torque Specifications:
The cost of a new Bolzen Krümmerflansch GSF 1200 can vary depending on the brand, material, and vendor. Expect to pay between €50 to €150 for a replacement part. The flange is readily available from authorized BMW Motorrad dealers, online retailers, and aftermarket suppliers.
Pros:
Cons:
Regular inspection is recommended every 10,000-15,000 kilometers or once a year, whichever comes first.
Yes, replacing the Bolzen Krümmerflansch GSF 1200 is a relatively straightforward task that can be performed by a competent DIYer with basic tools and mechanical knowledge. However, it is always advisable to consult a qualified mechanic if you have any doubts.
A damaged flange can lead to exhaust leaks, reduced engine power, increased emissions, and potentially affect the bike's safety and legality.
Aftermarket performance flanges are available that offer improved flow characteristics and increased horsepower. However, these upgrades may compromise emissions and noise regulations.
The most common causes include corrosion, loose bolts, excessive heat, and impact damage.
A BMW R 1200 GS rider experienced increased fuel consumption and reduced throttle response. After replacing the stock Bolzen Krümmerflansch GSF 1200 with a performance flange, the rider noticed a significant improvement in power, acceleration, and fuel economy.
A rider had been struggling with exhaust leaks and excessive noise from his R 1200 R. Replacing the Bolzen Krümmerflansch GSF 1200 effectively eliminated the leaks, reduced noise levels, and brought the bike into compliance with emission regulations.
A rider's R 1200 RS experienced a cracked exhaust manifold due to a damaged Bolzen Krümmerflansch GSF 1200. By replacing the flange promptly, the rider avoided more severe engine damage and costly repairs.
The Bolzen Krümmerflansch GSF 1200 is a critical component in the exhaust system of BMW R 1200 GS, R 1200 R, and R 1200 RS motorcycles. Proper maintenance and inspection are crucial to ensure its functionality and prevent costly failures. By understanding its significance, following maintenance guidelines, and addressing issues promptly, BMW Motorrad enthusiasts can optimize the performance, safety, and longevity of their bikes.
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