Tubes: All Sizes/Types

- Size: 700c x 23 – 25 - ISO Diameter: 622 / road / 29" - ISO Width: 23mm, 24mm, 25mm - Tube Compound: Butyl - Valve: Presta - Valve Core: Removable - Valve Shaft: Threaded - Weight: 125g (32mm), 126g (48 & 60mm), 128g (80mm)

Protect yourself from flats with Bontrager Thorn-Resistant tubes. Asymmetric design uses thicker rubber on the tread side and thinner rubber elsewhere, which saves weight while maximizing puncture protection. Product details - 4.1mm thickness (tread side) - Asymmetric extrusion puts extra rubber along tire sidewall and tread zones - 100% inspected for guaranteed quality 27-inch tire size equivalents - 700c x 22 – 25 also fits 27 x 7/8 – 1 - 700c x 28 – 32 also fits 27 x 1-1/8 – 1-1/4 - 700c x 35 – 44 also fits 27 x 1-3/8 – 1-3/4

- ISO Diameter: 406 / 20" BMX - Tube Compound: Butyl - Wall Thickness: 0.9mm - Valve: Presta - Valve Shaft: Threaded - Valve Core: Removable

- Labeled Size: 26 x 3.5 – 4 - ISO Width: 88mm – 100mm - ISO Diameter: 559 / 26" MTN - Valve: Presta Short 32-40mm - Valve Core: Removable - Wall Thickness: 1mm - Weight: 500g

Serfas replacement inner tubes are lightweight, durable, and affordable. The thorn-resistant version helps reduce the chances of flats.

- Valve Type: Presta - Valve Core: Non-Removable - Wall Thickness: 0.9mm - Flat Fold Width: 44mm (1.75-2.10), 65mm (2.50-3.0), 78mm (3.0-3.50)

- Valve Type: Presta - Valve Core: Removable - Flat Fold Width: 50mm - Wall Thickness: 3.7mm/1.7mm

Serfas replacement inner tubes are lightweight, durable, and affordable.

- Size: 18 x 1-3/8 - ISO Diameter: 400/18" - ISO Width (mm): 35mm - Tube Compound: Butyl - Valve: Presta - Valve Core: Removable - Valve Length: Short 32-40mm - Valve Shaft: Threaded - Weight: 98g

- Valve Type: Presta - Valve Core: Removable - Butyl rubber - Wall Thickness: 4.3mm

- Valve type: Schrader - Valve core: Removable - Butyl rubber - Wall thickness: 0.9mm

- Valve: Presta - Valve core: Removable - Butyl rubber - Wall thickness: 0.9mm

Serfas replacement inner tubes are lightweight, durable, and affordable.

- Valve Type: Presta - Valve Stem: Smooth - Flat Fold Width: 56mm - Wall Thickness: 3.7mm/1.7mm

- Valve Type: Presta - Valve Core: Removable - Butyl rubber - Wall Thickness: 4.3mm

- Valve type: Schrader - Valve core: Removable - Valve stem: Smooth - Butyl rubber - Wall thickness: 0.9mm

- Valve: Presta - Valve core: Removable - Butyl rubber - Wall thickness: 0.9mm

- Valve Type: Schrader - Valve Core: Removable - Butyl rubber - Wall Thickness: 0.9mm

- Butyl rubber - Removable valve core - Schrader valve - Wall thickness: 0.9mm

- Valve type: Presta - Valve stem: Threaded - Valve core: Removable - Butyl rubber

- Butyl rubber - Thorn-resistant - Economy tube - Presta valve - Wall thickness: 3.7mm/1.7mm

- Valve type: Schrader - Valve core: Removable - Butyl rubber - Wall thickness: 4.3mm - Thorn-resistant

- Valve type: Schrader - Valve core: Removable - Butyl rubber - Wall thickness: 4.3mm - Thorn-resistant

- 0.8mm walls (0.9mm walls for 16", 20", 24" sizes) - Puncture resistant

- Butyl rubber - Thorn-resistant - Economy tube - Presta valve - Wall thickness: 3.7mm/1.7mm

- Valve type: Schrader - Valve core: Removable - Butyl rubber - Wall thickness: 4.3mm

- Valve Type: Schrader - Valve Length: 32mm - Valve Core: Removable - Butyl rubber - Wall Thickness: 0.9mm

- Valve Type: Presta - Valve Stem: Smooth - Valve Core: Non-Removable - Wall thickness: 0.9mm

- Valve type: Schrader - Valve core: Removable - Butyl rubber - Wall thickness: 0.9mm

Utili-T Thorn-Resistant tubes feature a 3.7mm tread side for increased puncture protection. - Butyl rubber - Thorn-resistant - Economy tube - Removable valve core