Bontrager Fat Bike Tube | 26 × 3.8–5.0"
The right tube for fat tyres.
Fat tyres need fat tubes. The Bontrager Fat Bike Tube is built specifically for fat bikes, sized to suit 26" wheels running tyre widths from 3.8" to 5.0". Butyl rubber construction with a 0.9mm wall thickness balances durability with weight, and a 36mm Presta valve with removable core makes inflation and maintenance straightforward. Every tube is 100% inspected before leaving the factory.
Key Features
✅ Purpose-built for fat bikes — sized specifically for 26" wheels with 3.8"–5.0" tyres
✅ 0.9mm butyl rubber wall — the right balance of flat resistance and weight
✅ 36mm Presta valve with removable core — easy inflation and simple maintenance
✅ 100% factory inspected — every tube checked before it ships
Specs
Size: 26 × 3.8–5.0"
Material: Butyl rubber
Wall Thickness: 0.9mm
Valve Type: Presta
Valve Length: 36mm
Valve Core: Removable
About Bontrager
Bontrager is Trek's in-house component and accessories brand, developed alongside Trek's bike range to ensure everything works together from the ground up. The fat bike tube range is tailored specifically to Bontrager's fat tyre models including the Hodag and Jackalope.
Why Buy from Twelve
✔️ Free shipping Australia-wide on orders over $90
✔️ Melbourne showroom with expert advice and in-store support
✔️ Authorised dealer with full manufacturer warranty
✔️ Flexible payment options including Afterpay & Zip
✔️ Specialists in snow, skate, and electric — 12 months a year
