The POLINI D.4.3 Evo-Slider contrast spring is an essential component for optimizing the performance of your motorcycle.
Designed to ensure a precise and responsive response, this spring is ideal for those looking to improve their vehicle's acceleration and stability.
It is important to note that when used on Yamaha engines, it must be installed exclusively in conjunction with the Polini Speed Drive to ensure correct installation and optimal operation.
With the POLINI contrast spring, you can push your motorcycle to its maximum potential, enhancing the riding experience and overall performance.
Diameter: 4.3 mm
Material: High-quality steel
Design: Evo-Slider for better smoothness
Compatibility: Specific for Yamaha engines with Polini Speed Drive
Function: Optimization of acceleration and stability
Installation: Easy mounting with included instructions