Motorcycle big bore kits and pistons for increased displacement and performance

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2. Engine parts
3. Big Bore Kits & Pistons

		Top Performances 180 D.63 aluminum cylinder kit for Minarelli/Yamaha 125 E4/E5 engines   The TOP Performances 180cc Ø63 cylinder kit for Minarelli / Yamaha 125 4T 4V Euro 4 / Euro 5 engines is a high-performance upgrade designed to significantly increase engine displacement, torque... Code: 9938690	840,58€ 504,35€ Add to cart
		Polini cylinder kit D.47 per BSV ZX50 2T air cooled   Polini cylinder kitCode: 119.0077The Polini cylinder kit consisting of piston and cylinder is suitable for those who need to replace the original unit due to damage or for those who simply require... Code: 119.0077	213,59€ 170,87€ Add to cart
		Polini racing cylinder kit D. 47 for BSV ZX50   Polini racing cylinder kitCode: 119.0077/RThe Polini cylinder kit consisting of piston and cylinder is suitable for those who need to replace the original unit due to damage or for those who simply... Code: 119.0077/R	307,04€ 245,63€ Add to cart
		Malossi Complete Transmission Group OVER RANGE MHR Next Yamaha Tmax 530 ie 4T euro 4 2017-(J415E)   The Malossi OVER RANGE MHR Next is the most advanced evolution of the racing scooter transmission system. Designed for peak performance under competition use, it ensures top-level durability, smooth... Code: 6118154	633,18€ 506,54€ Add to cart
		Polini oil dispenser measuring 250ml   Polini oil dispenser Code: 121.500 Polini accessores and spare parts for scooter Code: 121.500	4,07€ 3,26€ Add to cart
		Polini cylinder kit minar.ser.6000 race 42 80 cc   Polini 133.6005 cylinder kit minar.ser.6000 race 42 80 cc. With over 70 years of experience, Polini is a reference brand for those seeking performance and reliability. The products are designed and... Code: 133.6005	652,93€ 522,35€ Add to cart
		Malossi oil seal diameter 35X44X4 for multivar 2000 variator   OIL SEAL Ø 35X44X4 MM  6617885B The Malossi oil seals are technologically advanced and, although they have been specifically designed for racing, they are also excellent for... Code: 6617885B	In stock 7,93€ 6,34€ Add to cart
		Polini cylinder kit sachs 6000 racing 44-80 cc plug 14   Polini 148.6002 cylinder kit sachs 6000 racing 44-80 cc. With over 70 years of experience, Polini is a reference brand for those seeking performance and reliability. The products are designed and... Code: 148.6002	652,93€ 464,41€ Add to cart
		Polini thermal group in cast iron D.47 per Minarelli V1   Polini cylinder kitCode: 133.0072The Polini cylinder kit consisting of piston and cylinder is suitable for those who need to replace the original unit due to damage or for those who simply require... Code: 133.0072	200,14€ 160,11€ Add to cart
		Polini engine kit minarelli v.1 issimo   Polini 133.0072 engine kit minarelli v.1 issimo. With over 70 years of experience, Polini is a reference brand for those seeking performance and reliability. The products are designed and manufactured... Code: 133.0072	200,14€ 160,11€ Add to cart

On Omnia Racing, you can purchase scooter cylinder kits, scooter cylinders, scooter pistons and engine kits designed for replacement, advanced maintenance or full performance tuning. Choosing the correct product depends on factors such as engine displacement, engine type, cooling system, intake setup, exhaust system, transmission configuration and desired performance level. A more powerful scooter cylinder kit can completely transform the behaviour of the scooter, but it must be integrated into a balanced setup to achieve real performance and long-term reliability.

Among the most appreciated brands in the scooter tuning world, you will find Malossi, an absolute benchmark for high-performance cylinder kits and engine components, Polini, a historic brand known for reliable racing kits, Top Performances, highly appreciated for balanced sport setups, and TPR, aimed at riders seeking more aggressive and high-performance configurations. These brands offer solutions ranging from everyday sport kits to full racing-oriented engine setups.

A scooter cylinder kit should never be chosen only based on displacement or brand. It is essential to evaluate whether the engine is air-cooled or liquid-cooled, as well as the carburetors system, exhaust, variator, clutch, transmission tuning and maintenance quality. For this reason, a dedicated category for cylinder kits and pistons should guide the rider toward the correct choice, avoiding a generic product-list approach.

Scooter tuning, displacement and performance upgrades

Scooter tuning often starts with the cylinder kit, because it is the component that most significantly changes engine performance. Increasing displacement or installing a more advanced cylinder can improve acceleration, torque and top speed, but it requires a properly balanced configuration.

A more aggressive performance cylinder kit works best when matched with compatible components. Variator, clutch, exhaust system, carburetion or fuel management must all be adapted to the new performance level. Without proper tuning, even a high-quality kit may fail to deliver its full potential or may become less reliable over time.

Cylinder, piston and kit components

A scooter cylinder kit may include the cylinder, piston, piston rings, wrist pin, circlips, gaskets and other installation components, depending on the model and manufacturer. The piston is a critical component because it operates under high temperatures and high RPM, converting combustion pressure into movement.

The quality of materials, machining and tolerances directly affects both performance and durability. For this reason, it is important to choose kits specifically designed for your engine, avoiding incompatible parts or improvised configurations. With more sport-oriented setups, proper engine break-in also becomes essential to ensure reliability and consistent performance.

What is a scooter cylinder kit used for?

A scooter cylinder kit is responsible for managing combustion and engine displacement. Replacing it with a more performance-oriented kit can improve acceleration, torque and overall efficiency when combined with compatible and properly tuned components.

What is the difference between a cylinder kit and a piston?

The cylinder kit includes the cylinder, piston and related components, while the piston is the moving part that travels inside the cylinder. In many cases, both are replaced together to ensure proper fitment and reliability.

What are the best brands for tuning the cylinder group?

Malossi, Polini, Top Performances and TPR are among the most widely used brands for road, sport and racing scooter tuning. The best choice depends on the engine, desired performance level and the other installed components.

Which oil should be used after installing a cylinder kit?

After installation, it is important to use a high-quality engine oil suitable for the engine specifications and intended use. In more aggressive setups, lubricant quality and maintenance become even more important to reduce wear and operating temperatures.

Are racing cylinder kits suitable for everyday use?

It depends on the kit. Some sport cylinder kits are perfectly suitable for daily use, while full racing cylinder kits require more maintenance, precise tuning and compatible supporting components. Before purchasing, it is always advisable to evaluate the scooter’s actual intended use.