Rockshox Carbon Expander Headset Preload System YGroup_7033835946029 Supplied with spare pins and

Supplied with spare pins and tool

Shimano 12-speed

Who's this for: Riders with splined nipples on their wheels

Fine tooth ratchet with reversing lever and a fixed opening on the opposite end

Pros: Light weight and seriously comfortable

Rockshox Carbon Expander Headset Preload System YGroup_7033835946029 Supplied with spare pins andGenuine RockShoxs carbon steerer tube expander plug for straight steerers. But what does an expander plug do? Expander plugs reinforce the areas of your steerer which are clamped preventing damage to the layer of carbon fibre while also allowing you to preload the headset bearings before you tighten the stem clamping bolts.