Schwalbe X-Light Presta Tube - 700x18-25
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Schwalbe X-Light Presta Tube - 700x18-25
Code: 48130
Schwalbe SV20 700 x 18/25 X-Light Tube in Various valve options


  • 700 x 18/25mm
  • X-light tube
  • Presta
  • Weight: 65g Approx
  • Choice of valve length
RoyPleased with these light butyl tubes, ease of fitting and roll well
Lady BaronRealmente economico
Mr WhartonGood tubes. 80g with lockring and dust cap, and removable valve core. Perfect!
Mr CreaghInflated fine, no bubbles or valve stem issues
ian1/2 the size and lot less weight than a standard tube, excellent back up. Not as robust as a standard but hold the pressure well
Mr LeePricey for sure but still cheaper than Conti Race Light. No difference in reliability. The cheapest way to shave weight.
Steve DockseyVery good tube had the two (front & rear) on for 11 months before a puncture on the rear (pothole), so pleased with the protection and can fit two in my saddle bag where before with a thicker one could only take one.
Rob StoneNice light tubes. Were true to weight and held the pressure for 3 days before loosing about 5-8 psi which is great. I always do the pressures before each ride anyway.
SevenWLight and sturdy enough. No problems.
AashiqNice and lightweight although not as small as the conties when folded. But stil smaller than regular inner tubes.
paulGood value lightweight tubes, less prone to punctures than conti supersonics which are very thin.
RichardGreat for keeping in the emergency bag as lighter and roll up smaller than standard tube. Valve on current batch is black - ideal for corbon/black wheels.
Mr T. SagnakLight performance tubes. Love them!
RegieMy 2nd pair from merlin as I've decided to replace my 1 year old 1st pair. Light but durable enough
Mr haraほどよく軽量だし安いしバルブが黒色に塗ってあるから好き!また買いたい。
Gareth BinghamEasy to fit, had no issues thus far after a few hundred miles and love the black valve, quick delivery as usual from Merlin
Mr EnglertLove these tubes and Merlin's price for these is better than most stores charge for regular stock tubes...these are 50 grams lighter
Mrs LondonoGood quality and very light tubes
TomNice lightweight tube that can be folded up into a small package and fit into a small seat bag. Holds air as a bonus. Wish they were a little cheaper
Mr CALOWas amazed that it is really lightweight when I compared to my other spare tubes. No flat so far.
GeoffGood savings in weight and bulk (though not sure about the 65g claim. Seems pretty robust, no problems fitting and no punctures yet - I've been using one since early spring.
GeoffWell made. Done a couple of rides with a few bumps but no punctures yet.
T ThrallBest inner tubes on the market. Super light weight and good value for money.
Mr TaylorI have found these Schwable Light tubes to be good lightweight race tubes but still reasonably puncture resistent
Dr. NicBest option for reducing rotating mass without sacrificing reliability. I use these on all my road wheels and have seen no increase in punctures.
S NielsenThese tubes are very light weight and do a good job of holding air with minimal loss of pressure after several days. Other tubes I have used have been heavier and lose air quicker.
Dr NicMy favourite road tube, same reliability as regular tubes but only 65gm (as opposed to Conti Supersonics, 50 gm but more fragile)
Dr NicAs it says on the box, only 65gm but the same reliability as regular 110gm tubes.
Jim from San DiegoLight but pricey. Flatted often with Conti 4000's, hopefully will not do so with new Gatorskins.
MarcGood quality and light tubes. Won't use any others.
Mr RasmussenBest tubes balancing light weight and reliability
Mr GreenwoodMy preferred inner tube. Not fragile like the Continental SuperSonics, and not carrying the excess weight of standard tubes. Just right.
Mr LauMy rides are on good roads so I can't say much about durability. Very lightweight and correct valve length for my application
RyanThese tubes are light and easy to install. The valve seems robust and durable.
Martin KI got these tubes because their compact size makes it easy to fit in a saddle bag/pocket. They are half the size of regular tubes.
sahinLight light tubes and a great combination with the new Schwalbe Durano Raceguard
MarcGood tubes - light, roll well and okay puncture protection. Only downside is having to inflate them more often than heavier tubes, oh, and they are expensive.
Ms ThompsonThese are good quality tubes. These are light, and perfect for racing if you`re on clinchers.
Mr kayihanNo issue there. Light and strong enough. I'm gonna buy some more...
Mac 1Great tube nice and lite but not to0 delicate, quality valve
Eser ERKALHolds air well.
Minus NothingPunctured one on install. Seem to do the job once they are in.
Mr AzzopardiLight light tubes and a great combination with the new Schwalbe Durano Raceguard I have just purchased. A must if you are looking to cut down that extra bit on weight.
Mr BrooksBought these for my time trial bike which I use at 140psi they are light but reliable at these high pressures. I've used latex tubes in the past but had failures at these sort of pressures.
Mr GredzinskiThese are fun time tubes. The way I look at it, if a thorn penetrates your tyre its gonna get a puncture with these on. So just carry a spare as I always do and enjoy the ride. They are air tight and couple with light folding tyres put them on the lightest rims (hubs are irrelevant) you possess and fly up them thar hills! Great for invigorating a heavy old steel bike with some nice hoops and tyres.
Mr sevincOne Of The Best For Races.
Mr BlanchardLightest tubes on the market. I run X- Light tubes on my MT bike and love the weight saving on roling resistance. Will never go back to other brands.