As my kids grow, I'm needing progressively longer cranks, but unfortunately, my tallest kid is still too short for commonly available 170mm cranks. At the moment, a set of 160mm cranks would be perfect. ...
Lightweight 15mm axles
Rockshox 15mm maxle light weighs 74g. Thankfully, there are now a few options available for lightweight 15mm axles:
Lightweight Stem Comparison
Here's some data I've collected on my search for a new oversize (31.8mm) MTB stem:
Lightweight flat pedals
VPone hank pedals - 180g - 'carbon' body, single sided, not sure how these would work. Light and cheap ($30);
Lightweight disc brake rotors
Here's some information I have collected on 180, 160 and 140mm lightweight disc brake rotors:
Lightweight cycling tools and spares
There are some good opportunities for weight loss in the tools that you carry. Two approaches are available: