BTI-63 · Schrader · 33mm Valve · Butyl · 12½" / 16" / 20" / 26"
BBB Schrader Tube 33mm
Reliable butyl tubes with a 33mm Schrader valve — covering smaller wheel sizes from 12½" kids' bikes up to 26" mountain and city wheels.
The BBB Schrader Tube 33mm covers the smaller end of the wheel size spectrum — from 12½" and 16" kids' bikes up through 20" and 26" MTB and city wheels. Butyl rubber construction holds air reliably for everyday riding. The 33mm Schrader valve suits standard-depth rims and is compatible with automotive pumps and most floor pumps without an adaptor. At $12.99 it's the most affordable tube in the BBB lineup.
Highlights
Covers kids' bikes to adult 26" wheels
The 33mm range spans 12½", 16", 20", and 26" wheel sizes — making it the go-to tube for smaller bikes, kids' bikes, and standard 26" MTB or city wheels with shallow rims.
Schrader valve — pumps up anywhere
Compatible with automotive pumps, gas station air hoses, and virtually all floor pumps. No adaptor needed — ideal for riders who want simplicity at roadside or trailside fixes.
Butyl rubber — reliable everyday choice
Butyl holds air longer than latex and resists puncture permeation well — a dependable, low-maintenance option for commuting, school runs, and general riding.
Available sizes — 33mm Schrader only
| 12½" · 1.75–2.25 | Schrader 33mm · #030296-05 |
| 16" · 1.75–2.125 | Schrader 33mm · #030296-06 |
| 20" · 1.75–2.35 | Schrader 33mm · #030296-01 |
| 26" · 1.50–1.75 | Schrader 33mm · #030296-02 |
| 26" · 1.75–2.35 | Schrader 33mm · #030296-10 |
Specifications
| Brand | BBB Cycling |
| Material | Butyl rubber |
| Valve type | Schrader |
| Valve length | 33mm |
| Wheel sizes | 12½", 16", 20", 26" |
| Width range | 1.50"–2.35" |
BBB Cycling Schrader Tube · 33mm Valve · 5 sizes available