Nearly finished my build.
Final result will come at the end of this week.
Goal sub 7kg will be reached - any tips to save some weight?
For weightsaving a SROAD Monoblock cassette, if you can find one
That's 60gr off on paper, i have one on my bike it shifts ok, haven't compared shift quality with Ultegra though.
SROAD12 Speed Road Bicycle Cassette CNC 11-32T Freeewheel Fits Shimano Hub Super Light CNC 230g 12S Road Bike Casstte
MODEL: WSD-8012-1132-A1
SPEED: 12S
SIZE: 131*44MM
TEETH: 11-32T (11-12-13-14-15-16-18-20-22-25-28-32)
WEIGHT: 230G
MATERIAL: Chrome Molybdenum Vanadium Steel Aviation aluminum alloy
CASSETTE: Fit Shimano Hub body
COLOR: SILVER, RAINBOW, GOLDEN, DARK GRAY.
CHAIN: BLACK COLOR SUMC 12 SPEED 12SL 126 LINKS WITH LOCK.