• The longest lasting most durable off-road sprocket you can buy developed over 5 years.
• The unique flat face design keeps weight to a minimum and means the TwinRing's as narrow as a regular chainwheel.
• Inner Ring is high strength Ultralight 7075 T6 Aluminium. Outer Ring is Electroless Nickel Coated steel.
• Outer is expanded at 200 °C and then fitted to inner, creating a permanent bond for the life of the sprocket.
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