[Freeridin']

I need a 55 ID headset lower for a straight 1 1/8" steerer. I'm only finding 55/40 and unable to find a 30mm reducer crown.

Will a ZS56/30 work? Its for a BlackMarket Roam that has pinch bolts on the headtube.

 

[marshalolson]

Order the 55/40 headset, then separately order a reducer race.

Gravity was the best bet IMO, and the Fsa reducer race for the zs49 headset works perfect in the bearing.

 

[Lelandjt]

I can't follow the metric sizes but Cane Creek sells separate upper and lower headsets. I've been able to make all kinds of combinations.