Crank Brothers Synthesis Freehub Body - Shimano HG Splined - Steel YGroup_7033914654765 Materials: Heat treated steel core

Materials: Heat treated steel core with nylon outer covering

Output and Runtime: There are 5 modes to choose from (High / Middle / Low / Daytime HyperConstant / Flashing)

while still allowing inboard hand positions

or longevity

and steez at their core

Crank Brothers Synthesis Freehub Body - Shimano HG Splined - Steel YGroup_7033914654765 Materials: Heat treated steel coreThese replacement freehub bodies are for the Crank Brothers Synthesis Wheels. Steel freehub bodies are more durable especially for HG drivers. Alloy freehub bodies are lighter. Includes: Freehub Body Driver side endcap Available for XD, HG, and Microspline freehubs.