Valve Train for your BMW R100GS, R100GS Paris-Dakar, R100R, R100RS Classic & R100RT Classic
The valve train is a central component of the classic BMW two-valve boxer engine and has a significant influence on the smooth running, performance, and service life of your BMW R100GS, BMW R100GS Paris-Dakar, BMW R100R, BMW R100RS Classic, or BMW R100RT Classic. Wear or damage to valves, valve springs, or valve spring retainers can lead to power loss, rough engine operation, or in the worst case, engine damage. At Hornig, you will find high-quality replacement parts for the valve train, specifically designed for air-cooled 2-valve boxer models and ensuring reliable repair.
Intake and exhaust valves for precise engine control
The range includes various valves for different R100 variants. These include the Intake Valve 44mm for more powerful R100 models as well as the Intake Valve 38mm for smaller or older variants. This is complemented by matching exhaust valves such as the Exhaust Valve 40mm 45°, Exhaust Valve 40mm 30°, and Exhaust Valve 34mm. These valves feature hardened stem ends and durable valve heads, ensuring reliable sealing in the combustion chamber and a long service life even at high temperatures.
Valve springs – stable valve operation at high RPM
The valve spring ensures that the valve reliably returns to its seat position after being opened by the rocker arm. Over time, valve springs can lose tension or break due to material fatigue. Replacing them with high-quality replacement springs ensures that the valves close properly even at higher engine speeds and that the engine retains its original performance.
Upper and lower valve spring retainers – essential retaining components
In addition to valves and springs, the complete valve train also includes the appropriate retainers. The upper valve spring retainer and the lower valve spring retainer secure the valve spring in position and ensure even force transmission to the valve. Worn or damaged retainers can lead to uneven spring force and increased wear. Therefore, it is recommended to inspect and, if necessary, replace these components during a valve overhaul.
Why a valve train overhaul is worthwhile
In classic BMW R100 engines with high mileage, signs of wear in the valve train are common. Worn valve seats, worn valves, or fatigued springs can manifest as rattling noises, increased oil consumption, or loss of performance. Timely refurbishment with new valves, springs, and retainers helps to smooth engine operation, improve compression, and significantly extend the service life of the boxer engine.
Precision-fit replacement parts for all classic R100 variants
All valve train components in the Hornig range are designed for air-cooled BMW two-valve boxers and cover a wide range of models – from early /7 series to Paralever models such as the R100GS or R100R. Thanks to precise dimensions and high-quality materials, the parts can be easily integrated into existing cylinder heads and meet original specifications, ensuring a safe and long-lasting repair.
Conclusion – Reliable engine performance with an intact valve train
A well-maintained valve train is essential for the performance and reliability of your BMW R100. With the right replacement parts such as valves, valve springs, and valve spring retainers from the Hornig range, you can professionally overhaul your boxer engine and restore it to perfect technical condition. This not only ensures smoother engine operation and improved performance but also significantly contributes to preserving the value of your classic BMW motorcycle.
