Bontrager Race X Lite / XXX Lite Butyl Tubes - lightest?
Moderator: robbosmans
- mellowJohnny
- Posts: 492
- Joined: Thu Aug 16, 2012 12:56 am
- Location: YYZ
I stumbled across some Bontrager Race X Lite 700c 18-25 mm butyl tubes today weighing in at 66 grams (0.60 mm thick) with a 36 mm stem (incl. collar and cap). The XXX Lites (which i did not buy) were 58-ish on the shop scales. They were 2x the price...
I looked around to see if there was anything lighter and I'm a bit surprised to find that these seem to be some of the lightest (butyl) tubes I've found.
Quick completely un-scientific comparison: (not my weights - only what I've seen on a few web sites):
Michelin Aircomp Ultralight - 77 g (not sure what valve length)
Vittoria Ultralight - 84 g (not sure what valve length)
Conti Light - 99 g (not sure which size this weight was for)
Conti Supersonic - 45 g?
Maxxis MVS Flyweight - 46 g (these are 0.45 - same thickness as the XXX Lites)
Deda - 92 g w/ 40 mm stems
So I'm a bit surprised. Anyone else?
I looked around to see if there was anything lighter and I'm a bit surprised to find that these seem to be some of the lightest (butyl) tubes I've found.
Quick completely un-scientific comparison: (not my weights - only what I've seen on a few web sites):
Michelin Aircomp Ultralight - 77 g (not sure what valve length)
Vittoria Ultralight - 84 g (not sure what valve length)
Conti Light - 99 g (not sure which size this weight was for)
Conti Supersonic - 45 g?
Maxxis MVS Flyweight - 46 g (these are 0.45 - same thickness as the XXX Lites)
Deda - 92 g w/ 40 mm stems
So I'm a bit surprised. Anyone else?
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I just got some Conti SS 42mm and they weighed in at 50g. They definitely roll better than the stock tubes (96g.) I run anywhere from 110 to 120 psi. So far only three rides on them and I don't know anything about long-term durability. However I'm very impressed by the extra speed they give.
The Specialized Turbo tubes are light (I think mine weighed 58?) and are nice. They hold up well and come pre-talced and wrapped tightly for a jersey pocket.
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What about the Vittoria Evo 55gm
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- Joined: Fri Dec 23, 2011 10:09 pm
- Location: Vancouver, Canada
Which of these lightweight tubes have removable valve cores so that I can put in tofu extenders and get at least 60mm of stem? I've been riding on the Michelin Aircomp Ultralight 60mm valve stems (non-removable cores) while thinking they're the greatest thing since sliced bread. Now that I've read about these other (waay lighter) options I'm left a little deflated! Pun intended.
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