Spare parts for MBK Nitro 50

Contrast springs Evo-slider for Polini variatorsCode: 243.092The Polini contrast springs with EVO SLIDER designed with wear-resistant and self-lubricating material allow the Speed Drive mobile...

Contrast spring for Polini variatorsCode: 243.043Polini has created contrast springs for the rear movable half-pulley to adapt them to the additional load due to elaborate engines that deliver more...

Polini CP 17,5 carburetorCode:201.1702A wide range of diameters 15/17.5/19/21/23/24 allows the innovative Polini carburetor to meet all needs. Made entirely of aluminum of compact size and light about...

Polini CP 19 carburetorCode: 201.1902A wide range of diameters 15/17.5/19/21/23/24 allows the innovative Polini carburetor to meet all needs. Made entirely of aluminum of compact size and light about...

Polini CP 21 carburetor Code: 201.2101 A wide range of diameters 15/17.5/19/21/23/24 allows the innovative Polini carburetor to meet all needs. Made entirely of aluminum of compact size and...

Polini crankshafts Big EvolutionCode: 210.0022The Polini Big Evolution crankshafts are designed exclusively for the Big Evolution cylinder kits in order to improve the quality of the components and...

Polini crankshaftsCode: 210.0010Polini crankshafts are designed with a view to improving the quality of components and performance. The resistance characteristics are increased thanks to specific heat...

Polini for Race crankshaftsCode: 210.0048Polini for RACE crankshafts are designed with a view to improving the quality of components and performance. The resistance characteristics are increased...

Polini oil seals for crankshaftsCode: 285.0002Polini oil seals are designed for racing engines but adaptable perfectly to standard engines, improving their performance. With a perfect seal they are...

Polini crankshaft replacement kit high revsCode: 282.0002When overhauling the crankshaft it is necessary to replace the oil seals as well as the main bearings that support the crankshaft at high...