Lightweight Wheel Spacer

Hi, As my mission to reduce weights on my bike,reducing the unsprung weight is the most benefit that i could get from my bike. The latest project is to replace the bolt to Titanium and also aluminium wheel spacer..


The old one..stainless steel.Note that i have removed the speedo gear with the steel spacer



...replaced with this one. I had 2 aluminium spacer in my bolts box,so it is actually 0 costs. I only need to send it to be lathed to 15.2mm. But i'm charged rm30 for both left & right,that is SO EXPENSIVE!!