Top Racing Central/Compression Spring +53%, Yellow, Minarelli

Compression spring from the renowned Portuguese company Top Racing. Springs are available in three hardness grades, easily color-coded: +45% white, +53% yellow, and +61% red. The torque-correcting spring has multiple functions. Choosing a hard spring tightens the belt between the discs, allowing it to transmit greater torque without slipping. Using a weaker spring, the degree of compression is better, but there's a greater risk of belt slippage. Spring hardness also indirectly affects engine speed. The optimal solution is to purchase several springs with different hardness grades and select the appropriate one.