it weighs only 395g (Polini's Evolution = 485g and Malossi's Wing Bell = 576g)
Perfectly sealing gaskets are a prerequiste for optimal and reliable engine performance so we advise you to not skip replacing them on a regular basis
Grinder design maximizes the protection of your bars
ENGINE OIL SEALS KIT RUCKUS
TORQUE SPRING SUPER REINFORCED (+35%) 1997-yamaha-xv1100-virago-esi3016604 it weighs only 395g (Polini'sSilicon steel springs with high carbon content, heat treated, dynamically balanced, kiln painted, designed and calculated for each specific application. RFRENCE SPRING MEASUREMENTS (K) Spring stiffness A B mm C 444296955 45 77 4 9,6k 444297009 45 77 3,9 8,4k 4442911388 52,6 81 4,3 7,2k 444297047 53,1 110 3,6 3,5k 444297045 53,5 115 3,7 3,8k 444297046 53,7 110 3,9 4,7k 4442912658 57,5 105,5 4 4,2k 444297042 57,8 90 4,1 6,1k 444297043 57,8 90 4,2 6,8k