--- product_id: 395784961 title: "2-PCS 12/12.5\" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes" brand: "yunscm" price: "138.44 DT" currency: TND in_stock: true category: "Yun Scm" url: https://www.desertcart.tn/products/395784961-2-pcs-12-12-5-heavy-duty-bike-tubes-12 store_origin: TN region: Tunisia --- # 200% improved air retention 12/12.5" size fit 40% thicker butyl rubber 2-PCS 12/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes **Brand:** yunscm **Price:** 138.44 DT **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Ride Tough, Stay Ahead – Never Let a Flat Slow You Down! ## Quick Answers - **What is this?** 2-PCS 12/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes by yunscm - **How much does it cost?** 138.44 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/395784961-2-pcs-12-12-5-heavy-duty-bike-tubes-12) ## Best For - yunscm enthusiasts ## Why This Product - Trusted yunscm brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Next-Level Durability:** 40% thicker butyl rubber boosts puncture resistance and extends tube lifespan. - • **Effortless Installation:** Designed for quick valve alignment and hassle-free tube replacement—get back on the road fast. - • **Shock Absorption Mastery:** Heavy-duty butyl rubber cushions bumps for a smoother, more comfortable ride. - • **Stay Inflated, Ride Longer:** 200% better air tightness means fewer pump stops and more uninterrupted adventures. - • **Precision Fit for Versatile Rides:** Compatible with 12/12.5x1.75-2.25 tires for seamless MTB and road bike upgrades. ## Overview The YunSCM 2-PCS Heavy Duty Bike Tubes are engineered for 12 to 12.5-inch mountain and road bikes, featuring 40% thicker butyl rubber for superior puncture resistance and 200% improved air retention. Equipped with Schrader valves and designed for easy installation, these tubes deliver enhanced shock absorption and long-lasting performance, making them the ultimate upgrade for riders who demand reliability and comfort on every ride. ## Description Shop YunSCM 2-PCS 12/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes. Free delivery and returns on all eligible orders. ## Features - Compatible Size: 12/12.5x1.75/2.25(12 1/2 X 2 1/4) inch AV(45/57-203) bicycle heavy duty inner tube, enhanced the ductility of the heavy load tyre, so that these inner tubes are ideal for a wide range of applications, compatible with 12/12.5x1.75, 12/12.5x1.85, 12/12.5x1.95, 12/12.5x2.125, 12/12.5x2.20, 12/12.5x2.25, 12 1/2x2 1/4 tires. - More Air Tightness: Adopting high elasticity and high quality butyl rubber and EPDM rubber, the thickness is increased by 40%, the air tightness of the inner tube is increased by 200% compared with the ordinary butyl inner tube; the tire can continuously maintain a stable inflation air pressure state after inflation, which dramatically reduces the frequency of inflation, and the good air tightness helps to keep the pressure of the tire stable, which improves the driving safety and efficiency - HEAVY DUTY- Ultra Durable: Our heavy duty inner tubes have higher puncture resistance than ordinary inner tubes, and the thicker body can withstand more friction and wear, thus extending the service life of the tube, reducing replacement frequency and maintenance costs. And in long-term use. - Excellent Shock Absorption Ability: The heavy, strong, highly durable butyl rubber made from these inner tubes is a perfect shock absorber to reduce vibration and eliminate the shock caused by bumps and rough surfaces on the road or pavement. Heavy Duty butyl rubber for maximum ride comfort - upgrade your ride experience - Installation: 12"/12.5"x1.75"/2.25" bicycle heavy duty replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct. - Tip: Before installing the inner tube, please put the inner tube into the water for inspection, if there are bubbles, it means that it has been damaged, you can contact us. Check the valve position to ensure that the installation direction is correct. Note: The inflatable inner tube should avoid puncture by sharp objects. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07S314SJY | | Best Sellers Rank | 7,477 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 75 in Cycling Tubes | | Bike Type | Mountain Bike | | Brand Name | YunSCM | | Compatible Tire Width Maximum | 57 Millimetres | | Compatible Tire Width Minimum | 44 Millimetres | | Country Of Origin | China | | Customer Reviews | 4.6 4.6 out of 5 stars (746) | | Item Diameter | 12.5 Inches | | Item Width | 1.75 Inches | | Manufacturer | YunSCM | | Manufacturer Part Number | YunSCM | | Material Type | Butyl Rubber | | Model Number | GGG029 | | Size | 2 Count (Pack of 1) | | UPC | 723990286130 | | Valve Length | 1 Inches | | Valve Type | Schrader | | Wheel Size | 12.5 Inches | ## Product Details - **Brand:** YunSCM - **Item diameter:** 12.5 Inches - **Material:** Butyl Rubber - **Valve type:** Schrader - **Wheel size:** 12.5 Inches ## Images ![2-PCS 12/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes - Image 1](https://m.media-amazon.com/images/I/712ciqKuS4L.jpg) ![2-PCS 12/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes - Image 2](https://m.media-amazon.com/images/I/61FmaOQ1VHL.jpg) ![2-PCS 12/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes - Image 3](https://m.media-amazon.com/images/I/61tnxtY0RUL.jpg) ![2-PCS 12/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes - Image 4](https://m.media-amazon.com/images/I/619ZOJ8yeKL.jpg) ![2-PCS 12/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) ETRTO 45/57-203 AV32 Schrader Valve Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Road/MTB Bike Tyre Tubes - Image 5](https://m.media-amazon.com/images/I/81OdMSdTcGL.jpg) ## Frequently Bought Together - 2-Pcs 12"/12.5" Heavy Duty Bike Tubes 12/12.5x1.75/2.25(12 1/2 X 2 1/4) AV Premium Butyl Rubber Inner Tubes Compatible with 12x1.75-2.25 12.5x1.75-2.25 12 ½ x 2 ¼ Bike Tire Tubes Schrader Valve - Bell Standard and Self Sealing Bike Tubes - 16'' x 1.5/1.75/1.95/2.125 Back Wheel Replacement Inner Tubes (2-Pack) Compatible with Graco Click/Go Jogging/BoB Revolution SE/Pro/Flex/SU - Made from BPA/Latex Free Butyl Rubber --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/395784961-2-pcs-12-12-5-heavy-duty-bike-tubes-12](https://www.desertcart.tn/products/395784961-2-pcs-12-12-5-heavy-duty-bike-tubes-12) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-21*