CNC machined in our BC manufacturing facility,Outer, middle and aluminum inner rings manufactured from 7075-T6, one of the strongest alloys available today,Outer rings are made from 4mm thick material & middle rings from 5mm thick material for unsurpassed...
Tough and affordable 4-bolt BMX race chainring from Jet. Fits any crank with a 4-bolt spider. Made from 4140 steel for maximum durability and minimal flex. ###section### Product Specs TYPE: Chainring - 4 Bolt MATERIAL: Steel WEIGHT: 160g