Beta RR 125 Nockenwelle & Ventiltrieb

The UMA K2 valve springs are essential for racing camshafts and racing valves. They ensure reliable opening and closing of the valves with the camshafts and need for use with tuned camshafts enough stability and resistance to open the...

The decompression timing wheel from UMA is a high quality component. Built for the Yzfr or Mt 125, it provides lower pressure when starting the engine by opening a valve in the cylinder head. This opening makes it easier to turn the...

UMA camshafts are a premium choice for racing and performance applications. With their high-quality design and precision manufacturing, they offer improved power and optimized torque . UMA camshafts are specifically designed to maximize...

This item is an original spare part (OEM) of the brand Yamaha. OEM part number for comparison B5GE21700000

This item is an original spare part (OEM) of the brand Yamaha. OEM part number for comparison purposes 2DSE13111000, B6GE13110000

The rocker arms operate the valves in the 4-stroke cylinder head. Since the part actuated by the camshaft is mounted is mounted on ball bearings it is mechanical exposed to mechanical wear. These rocker arms are the perfect & cheap...

Poorly maintained Yamaha YI engines often have problems with a run-in camshaft. This is especially noticeable in the loss of power that occurs. Also the readjustment of the valves brings then nothing more, because the chrome layer of the...

Small component with great effect. The valve stem seal influences for example the oil consumption. Hard "stems" let oil run down the valve, which is then burned. Whenever work is carried out on the dismantled cylinder head, it is...