Need a spare or a straight swap for a punctured tube? The CST Save Tube in 16 x 1.9/2.125 trims weight compared with a standard tube while keeping dependable durability, with a 40 mm Schrader (American) valve.

Highlights

  • Lighter weight alternative to standard tubes
  • Good air retention and flexibility
  • Schrader (American) valve, 40 mm long
  • Fits front or rear

Everyday reliability

CST designed the Save Tube for commuting, leisure riding and general-purpose cycling, where a dependable tube that is easy to fit matters more than chasing grams. Keep one in the shed or the saddle bag and a flat is a quick fix.

Compatibility & fit

Fits tyres marked 16 x 1.9/2.125. Check the size printed on your tyre's sidewall, and make sure your rim's valve hole and your pump head suit a Schrader valve. Our workshop can fit tubes and tyres if you'd rather leave it to us.

Covered against manufacturing defects in materials and workmanship. Normal wear, punctures and damage from incorrect fitting or inflation are not manufacturing defects. For warranty support, return the product to Tune Cycles and we'll manage the claim with KWT Imports, CST's Australian distributor.
  • Lighter than a standard CST tube
  • Good air retention for everyday riding
  • Flexible for easy fitting
  • 40 mm Schrader (American) valve
  • Sized for 16 x 1.9/2.125 tyres
ModelCST Save Tube
Tyre size16 x 1.9/2.125
ValveSchrader (American)
Valve length40 mm
FitmentFront or rear
UseCommuting, leisure and general-purpose riding
SKU KWT-CTS16SV
Brand CST
Shipping Weight 0.2500kg
Shipping Width 0.160m
Shipping Height 0.060m
Shipping Length 0.220m