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Marathon Pro LC 125 (2009 bis 2017, MRT)
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The UMA piston rings are THE spare part when it comes to tuning UMA cylinders. They are made for the 180cc, 62mm cylinders for Yamaha, Fantic and Beta 125s and are essential for sealing the combustion chamber of the cylinder. They are...
Out of Stock
€39.95
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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...
Almost gone
€39.95
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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...
Out of Stock
€99.90
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Out of Stock
€26.42
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Out of Stock
€43.93
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Out of Stock
€32.95
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Cylinder head valve kit, Minarelli YI 125cc Euro3/4 (e.g. Yamaha YZF-R, MT, WR / Beta RR and many more)
The valve kit for YI engines includes all the necessary components for updating your cylinder head. The scope of supply includes 2 intake valves with a diameter of 23 mm and 2 exhaust valves with a diameter of 21 mm. These valves are...
Almost gone
€75.90
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Locking bolt cylinder head Most Racing, M14x1,5, versch. Colors
This high quality aluminum sealing bolt with thread size M14x1.5 and matching copper sealing ring is an indispensable accessory for anyone looking for a reliable and durable sealing bolt. With its versatility, this bolt is perfect for...
Available
€17.95
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Locking bolt cylinder head Most Racing, M12x1,5, versch. Colors
The aluminum locking bolts with thread size M12x1.5 and matching copper sealing ring are the perfect solution for closing holes, such as the temperature sensor hole on Derbi Euro4 models. Of course, the bolt is also suitable for other...
Available
€17.95
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Cylinder head gasket, Minarelli YI 125cc Euro3/4 (e.g. Yamaha YZF-R, MT, WR / Beta RR and many more)
This item is a cheap alternative to the expensive original spare part. The seal corresponds to the original in dimensions and function.
Available
€7.99
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Ball bearing camshaft 6906, 30x47x9mm, YI-3 motors
This item is a cheap alternative to the expensive original spare part. The bearing corresponds to the original in shape, dimensions and function. Ball bearing open 6906 - 30x47x9mm suitable for the camshaft for YI-3 OHC engines.
Available
€3.99
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Cylinder head revision kit, Big Bore, YI-3 Motoren
This is a set of spare parts for Big Bore cylinder heads, such as NK600.75 . So if your tuning cylinder head is struggling with worn parts, you do not need a new one directly. ⚠️The matching valves for the cylinder head must be ordered...
Almost gone
€149.90
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This item is an original spare part of the brand Yamaha/Minarelli This ball bearing is located in the cylinder head and guides the camshaft. Often this bearing can only be removed mechanically and is damaged. A new bearing should...
Almost gone
€3.99
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Cylinder head valve kit, Minarelli YI 125cc Euro3/4 (e.g. Yamaha YZF-R, MT, WR / Beta RR and many more)
A cylinder of 4-stroke engines is controlled by several valves. These in turn are driven by the camshaft and open or close the respective combustion chamber of the engine. Losses of compression pressure in the cylinder can in many cases...
Available
€74.90
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Cylinder head Ceramic 150cc, Yamaha / Minarelli YI- Engines
This cylinder head is an optimized version of the original head with larger intake & exhaust valves (19 & 22mm). Due to the enlarged valves, the filling in the cylinder can be improved, which thus also immediately leads to an increase in...
Almost gone
€415.90
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To get the absolute maximum out of the Yamaha & Minarelli YI engines this cylinder head from Naraku with 66mm Ø is indispensable. The cylinder head is designed for use with the 200cc Ceramic cylinder kit from Naraku. More clearance,...
Available
€435.00
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This article is an original spare part (OEM) of the manufacturer Yamaha.
Available
€1.99
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We offer you a cylinder kit for the Yamaha YZF-R125 with three programs stored on the ignition unit "Force Master 1" for the optimal adjustment of the injection to the driving application. With the first program the original ignition...
Available
€355.00
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Naraku 200cc Big-Bore ceramic cylinder kit with 66mm bore and hard chrome plating, suitable for Yamaha WR, YZF-R, MT and many other 125cc with Yamaha YI engine. Supplied as shown with all seals and small parts necessary for assembly. The...
Available
€229.90
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Nockenwelle Original Replica, Yamaha YI-3/4 Motor
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...
Available
€49.90
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If the timing chain tensioner is replaced, it may be necessary to renew its seal as well. Here we offer this spare part original from Yamaha. OEM part number for comparison purposes 1DYE22130000
Available
€4.24
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Compared to the 150cc cylinder kit from Naraku, the 177cc cylinder has of course been given an even larger bore which in turn can further optimise the performance of the engine. Since in cubic classes from 160cc on the original ECU...
Almost gone
€219.90
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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...
Available
€3.99
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To get the absolute maximum power out of Yamaha's YI-3 engines, this 62mm Ø Naraku cylinder head is indispensable. More passage, reinforced valve springs and larger valves (21/23mm) let every cylinder with 62-64mm bore breathe properly....
Available
€429.90
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The cylinder is the heart of your Rieju Marathon 125. This is where all the power at your disposal comes from. In modern engines are built to be very robust and durable. Nevertheless it can happen that a part of your cylinder breaks and you need a spare part. This is the case, for example, with the engine gasket from time to time. In this case, you should also carry out a repair on your Marathon 125, because a defective cylinder not only cylinder not only costs you performance on the road, but in the worst case it can also lead to a major more serious (and more expensive) damage to other areas of the engine.
In addition to replacement pistons, you can also find replicas of the original 125cc cylinders. So you can get the "factory condition" of your Rieju Marathon 125 at any time.
Darüberhinaus we offer some tuning packs and tuning cylinders. Here there are different sizesößen between 125cc to 183cc displacement. So you increase the performance of your Marathon 125 für the race track.
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