The Freedom To Explore

J.ACK II Ultegra Di2 – January 2022

Bespoke Specification

  • J.ACK custom geometry frame
  • ÆRA All Road Dynamo Anything Mount disc fork
  • Streamline integration: internally routed bottom bracket
  • Hand brushed frame finish
  • Pewter black headbadge design
  • Shimano Ultegra Di2 groupset
  • BSA threaded bottom bracket
  • Pro Vibe alloy handlebars
  • Pro PLT stem
  • ÆRA Carbon Seatpost
  • Fizik soft touch bar tape
  • Brooks C13 saddle
  • ÆRA AR|30 700c alloy wheels hand-built in the UK with Son dynamo front hub and ÆRA rear hub, Sapim D-Light spokes and brass nipples
  • Continental GP5000TL 32mm tyres
  • PDW Full Metal fenders, full black, 45mm
  • Supernova E3 Triple front dynamo light
  • Son rear dynamo light
  • Sinewave Reactor USB port
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