TORQUE SPRING SUPER REINFORCED (+35%) 1997-yamaha-xv1100-virago-esi3016604 Constructed of stainless steel throughout

Constructed of stainless steel throughout the mid-pipe and end-cap while the canister is constructed of aluminum for increased durability

Grinder design maximizes the protection of your bars

Designed specifically with the Adventure enthusiast in mind

The SST Shorty Silencer is the heart and soul of the SST power package

it weighs only 395g (Polini's Evolution = 485g and Malossi's Wing Bell = 576g)

TORQUE SPRING SUPER REINFORCED (+35%) 1997-yamaha-xv1100-virago-esi3016604 Constructed of stainless steel throughoutSilicon 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