TWINSTAR STEEL/ALUMINIUM HYBRID SPROCKETS
STEEL OUTER RING HEAT-INDUCTION HARDENED HIGH CARBON STEEL JT advanced tempering process achieves hardness that could last six times longer than a 7075-T6 aluminium sprocket, enhancing power transfer performance
ALU CORE LIGHTWEIGHT AVIATION-GRADE ERGAL 7075-T6 ALUMINIUM Precision made using state of the art laser cutting and CNC equipment, resulting in an ultra lightweight race proven design
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