Minarelli horizontal clutch springs d=107mm Polini

Kit of 4 spring sets

Tuned engines generally begin to deliver their power only at very high rpm, and the engine loses power at low rpm; this is often noticeable when the motorcycle starts poorly.

To bridge the rpm range in which the engine has little power, Polini offers this replacement spring set with different stiffness ratings for standard clutches.

Standard clutch d.107 mm / 3 shoes!

COLORS:

• Black: 20% stiffer, 5,500 rpm
• Green: 35% stiffer, 6,000 rpm
• Yellow: 50% stiffer, 6,500 rpm
  
• Blue: 100% stiffer, 7,000 rpm