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 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







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