Clutch springs Aprilia Leonardo 250cc Maxi Polini

The hardness of the clutch spring determines whether the mechanism opens the clutch to engage with the bell at higher or lower engine revolutions.

A stiffer spring will make the clutch "engage" at higher revolutions and, as a result, the motorcycle will take off faster from a standstill and you will notice better acceleration. In other words, a soft spring is like starting in "second gear", while with the stiff spring it is like starting in "first gear". 

Attention!! in your choice, because if it is too stiff, you will need more power and more RPM to take off from a standstill.

15% Stiffer

For the following models:

    Aprilia Leonardo 250 H2O 4T E1 1999-2001 (Yamaha)
    Aprilia Leonardo 250 H2O 4T E2 2002-2004 (Minarelli)
    Aprilia Leonardo 250 ST H2O 4T E1 2001 (Yamaha)
    Aprilia Leonardo 300 H2O 4T E1 2002-2004 (Minarelli)
    Benelli CafféNero 250 H2O 4T E3 2008-2014
    Benelli Velvet 250 Eco H2O 4T E1 1999-2001
    Benelli Velvet 250 Touring H2O 4T E1 2001-2003
    Italjet Jupiter 250 H2O 4T E1 2001-2002
    Malaguti Madison 250 S H2O 4T E1 1999-2001 (G310E)
    Malaguti Madison 250 S H2O 4T E2 2002-2003 (G310E)
    Malaguti Password 250 CK H2O 4T E2 2005-2006 (4MS)
    MBK Evolis ABS 250i H2O 4T E3 2014-2016
    MBK Kilibre 300 H2O 4T E1 2002
    MBK Skycruiser II ABS 250i H2O 4T E3 2013
    MBK Skyliner 250 H2O 4T E1 1997-1999
    MBK Skyliner 250 H2O 4T E1 2000-2003
    Renault Kouranos 250 H2O 4T E1 2002-2003
    Yamaha Majesty 250 H2O 4T 1996-1999
    Yamaha Majesty 250 H2O 4T E1 2000-2003
    Yamaha Versity 300 H2O 4T E2 2002-2006
    Yamaha X-City 250i H2O 4T E3 2007-2015
    Yamaha X-Max 250 H2O 4T E2 2005-2006
    Yamaha X-Max 250i H2O 4T E3 2007-2009
    Yamaha X-Max II 250i H2O 4T E3 2010-2013
    Yamaha X-Max II ABS 250i H2O 4T E3 2011-2013
    Yamaha X-Max II Sport 250i H2O 4T E3 2011-2013
    Yamaha X-Max III 250i H2O 4T E3 2014-2016
    Yamaha X-Max III ABS 250i H2O 4T E3 2014-2016