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. These valves are 28,5mm (1,0 mm oversize) and 24mm (1,0 mm oversize).
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