The Hylix carbon fibre seatpost weighs in at a favourable 163.3g (claimed was 160g) for its full 400mm nominal length (it's actually just over 390mm, with 357mm of 27.2mm diameter post, of which 244mm is above the "0" insertion marker). However, the stand-in seatpost currently fitted has 20mm of setback, and I've already repositioned the saddle almost as far back as it will go, which doesn't bode well for the Hylix post, which has no setback. Maybe the stand-in post is going to stay put, and the Hylix is going to pass through eBay for a second time - a few more rides will tell. But the stand-in post, even though it's already been shortened, is heavier - I'm reserving final judgement on its potential permanence.
The J&L titanium headset cap and its titanium bolt weigh 11.1g (claimed was 11.0g). Unlike the current plastic M:Part cap, which has a rounded underside, the titanium cap has a flat underside with a slightly raised circular locating ridge. The ridge is slightly smaller in diameter than the internal diameter of the steerer tube, and almost shallow enough for the cap to fit perfectly without needing the stack spacer that's currently sitting under the stem. If I get the height of the ridge reduced slightly, I'll be able to save a total of 6.8g by discarding the spacer and fitting the titanium cap and bolt in place of the M:Part equivalents, and I'll have the absolute maximum surface area contact between the stem and the steerer.
Before:
- M:Part cap = 8.6g
- M:Part bolt + washer = 8.3g
- stack spacer = 1.0g
- total = 17.9g
After:
- titanium cap = 6.3g
- titanium bolt = 4.8g
- no spacer = 0.0g
- total = 11.1g
Total weight saving = 6.8g (!)
And the free socks? As expected, way too small! Gave them away without even bothering to weigh them... ;-)
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