The original retainers weight 7,5g and the titanium retainers weight 4,2g => 45% lighter. 16 Oversized Valves + 16 Titanium Retainers by ABUSO. 16 Retainers made of grade 5 titanium. Set of 16 high performance valves for the Honda CBR929 RR ( SC44 2000-200 0 ) and CBR959 RR ( SC50 2002-2003 ).
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