Old post share.
Diffusion welcome.

We started the sale of a stem kit for KSR110, KSR1,2.

Material.
Stem shaft · · · A7075
Under bracket · · · A2017

This is genuine handle lock is available.↑

Lightweighting of the back side.↑
As for the weight, this product is finished to 752g and about half weight for 1484g of normal (iron made) by using duralumin.

Clamp width normal 25mm, this product 29.5mm.
The clamp bolt is secured firmly with two M6 bolts at the place of one normal M8 bolt.

The bearing is attached in the state that the press fit only for bottom races ended in.