Polini Hi-Speed DimmerSYM 50 ORBIT III 50 4T E4 - 2018 - 2020Ref : POL00213A / 1100151

POLINI Hi-Speed Variator - Sym Orbit (manufacturer reference: 241.754) is a complete variator kit developed to optimize the transmission of the SYM ORBIT III 50 4T E4 in urban environments. Designed by POLINI, it combines reworked mechanical components and a dedicated electronic module to make the most of the engine's range while maintaining original reliability.

• Complete kit delivered with a specific electronic device and connectors that interface directly with the original ones for quick installation.
• Machined half-pulley with different angles to increase the belt travel and promote a more dynamic acceleration.
• Polished roller tracks to improve sliding and rollers provided at 5.3 g in a new nylon + aramid fiber blend for controlled wear.
• Reinforced push spring (+15%) and clutch springs with increased load (+20%): the clutch engages approximately 600 rpm higher, altering the engagement behavior.

The POLINI Hi-Speed is aimed at urban riders looking to fine-tune the mechanical mapping of their primary transmission without modifying the engine. The provided electronics must be installed to fully utilize the kit. Simple and quick installation, compatible with SYM ORBIT III 50 4T E4 (2018–2020).