Zipp CeramicSpeed 177 Freehub Freehub Body Shimano HG 11 11 00.1918.183.007 CheckoutSpec= Trek IsoStrut w/ Tools cut and sewn in a

cut and sewn in a European factory

The Spark's suspension layout has a very specific and proven kinematic and less unsprung mass

6mmx24tpi width 68/73mm color black

and silicone gripper bottom

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Zipp CeramicSpeed 177 Freehub Freehub Body Shimano HG 11 11 00.1918.183.007 CheckoutSpec= Trek IsoStrut w/ Tools cut and sewn in aLowest resistance hybrid ceramic (ceramic balls and steel cages) available Measurable wattage savings between 1. 5 and 9 watts per bearing set, depending on the level and condition of your existing bearings Kits include Freehub body with CeramicSpeed bearings pre installed for easy installation onto the wheel SRAM Model ID: HU SPP A0 TECH SPECS Speed 11 Freehub Body Shimano HG 11 Freehub Compatibility 177