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$74.99
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12 1/2x2 1/4 (57-203) inner tube 2 pcs with 45° AV valve + lever | Compatible with 12" stroller, kids bike
★★★★★
$74.99
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6 availableColor: 12 1/2 x 2 1/4 (57-203) AV45
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1
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About this item
- ✅ 100% COMPATIBILITY. This inner tube is compatible with the following tires 🛞: 12 1/2 x 2 1/4 (57-203), 12 1/2 x 2.125 (62-203), 12 x 1.75 (47-203), 12 x 2.10 (54-203), 12.5 x 2.125 (62-203), 300x55-203, 300x75-203, 12 1/2 x 1.95 (50-203).
- 🛞 ORIGINALITY: The diameter and thickness of the inner tube are ideal for replacing stroller, scooter, and kids' bike tires with a 12-inch size.
- 💪 RELIABILITY. Premium 1.2 mm butyl rubber that cushions external shocks on cobbled roads and allows long-term use.
- 🌱 SAFETY ALL YEAR ROUND. The inner tube material is lead-free and can be stored safely at home near food. The tube is highly wear-resistant and can be used safely in any season and under all weather conditions.
- 🔧 REPLACEMENT PROCEDURE. Slightly inflate the inner tube. Insert it into the tire and distribute it evenly inside. Place the valve on the wheel. The valve must remain on the outside of the stroller. Mount the outer tire first on one side of the rim and then on the other. Inflate the wheel between 1.2 and 1.5 bar. If you encounter any problem, you can contact us at any time. We offer free returns within 30 days or free replacement.
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Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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