--- product_id: 562193188 title: "18x8.50-8 18x9.50-8 Inner Tubes with TR-13 Straight Valve Stem, 2 Pack" brand: "sportyouth" price: "€ 133.73" currency: EUR in_stock: true category: "Sportyouth" url: https://www.desertcart.sk/products/562193188-18x8-50-8-18x9-50-8-inner-tubes-with-tr store_origin: SK region: Slovakia --- # 4X thicker premium rubber Fits 18x8.50-8 & 18x9.50-8 tires Quick install, no special tools 18x8.50-8 18x9.50-8 Inner Tubes with TR-13 Straight Valve Stem, 2 Pack **Brand:** sportyouth **Price:** € 133.73 **Availability:** ✅ In Stock ## Summary > 🛠️ Upgrade your ride, save your wallet—inner tubes that keep you moving! ## Quick Answers - **What is this?** 18x8.50-8 18x9.50-8 Inner Tubes with TR-13 Straight Valve Stem, 2 Pack by sportyouth - **How much does it cost?** € 133.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/562193188-18x8-50-8-18x9-50-8-inner-tubes-with-tr) ## Best For - sportyouth enthusiasts ## Why This Product - Trusted sportyouth brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Convenient 2-Pack Value:** Double the reliability with two premium tubes, ready to keep your equipment rolling smoothly. - • **Optimized Pressure Control:** Max 30 PSI with manual pump ensures safe inflation and peak performance without risk of overinflation. - • **Cost-Effective Tire Revival:** Replace inner tubes, not entire tires—save money and extend your tire’s life with minimal effort. - • **Universal Fit for Versatile Use:** Seamlessly compatible with golf carts, ATVs, lawn mowers, and more—one tube, endless possibilities. - • **Built to Last with Heavy-Duty Rubber:** 4-ply construction delivers superior airtightness, shock absorption, and aging resistance for year-round durability. ## Overview This 2-pack of SPORTYOUTH 18x8.50-8 and 18x9.50-8 inner tubes features TR-13 straight valve stems and heavy-duty 4-ply rubber construction. Designed for a wide range of off-road equipment including golf carts, ATVs, and lawn mowers, these tubes offer superior airtightness and shock absorption. With a max pressure of 30 PSI and easy installation, they provide a cost-effective solution to extend tire life and maintain peak performance across all seasons. ## Description desertcart.com: 18x8.50-8 18x9.50-8 Inner Tubes with TR-13 Straight Valve Stem, 2 Pack | Heavy Duty Replacement Tire Inner Tubes for Lawn Mower, Wheelbarrow, Golf Cart, Tractor, Snow Blower, Trailer, ATVs, Go Kart : Patio, Lawn & Garden ## Features - PERFECT FIT - Replacement inner tube with TR-13 straight valve stem fits 18x8.50-8" and 18x9.50-8" tires (8" rims, 18" OD). Also called as 18x6.50-8, 18x7.50, 18x8.5-8, 18x9.5-8 (Please check the size before buy) - WIDE COMPATIBILITY - Works perfectly with golf carts, ATVs, Quad 4 Wheelers, lawn mowers, wheelbarrows, garden tractors, dollies, trolleys, tillers, go-karts, garden / utility / flat carts, generators, pressure washers, air compressors, wood chippers and more. One tube, many uses around your yard and workshop - HEAVY DUTY - Made from premium rubber, 4X thicker than standard tubes. Delivers superior airtightness, shock absorption, and aging resistance – durable and built for home, professional, and industrial use - COST EFFECTIVE – NO NEW WHOLE TIRE NEEDED! When your tire goes flat, simply replace the inner tubes – not the entire tire. This extends existing tire's life and and gives you a budget‑friendly fix. Install in minutes with no special tools - PACKAGE & NOTE – Includes 2 tubes (18x8.5/9.5-8", TR13 straight stem). Max 30 PSI, use a manual pump only to avoid overinflation. Not for road/highway use. Perfect for off‑road yard applications. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CH9PD9MR | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | #22,969 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #76 in Wheelbarrow Replacement Parts | | Brand Name | SPORTYOUTH | | Construction Type | Rubber construction | | Customer Reviews | 4.4 4.4 out of 5 stars (1,339) | | Item Diameter | 18 inches | | Item Highlight | Heavy Duty Replacement Tire Inner Tubes for Lawn Mower, Wheelbarrow, Golf Cart, Tractor, Snow Blower, Trailer, ATVs, Go Kart | | Load Capacity | 100 pounds | | Load Index | 78 | | Manufacturer | SPORTYOUTH | | Manufacturer Part Number | A-IT | | Maximum Pressure | 30 psi | | Number of Packs | 2 | | Ply | 4-Ply | | Rim Size | 8 inches | | Rim Width | 8 inches | | Seasons | Fall, Spring, Summer, Winter | | Section Width | 8.5 inches | | Size | 18x8.50/9.50-8 | | Tire Aspect Ratio | 0.78 millimeters | | Tire Diameter | 18 inches | | Tread Depth | 2.5 millimeters | | UPC | 810032071684 | | Unit Count | 2 Count | | Vehicle Tire ISO Metric Size Description | 18x8.50/9.50-8R | ## Product Details - **Brand:** SPORTYOUTH - **Load Capacity:** 100 pounds - **Load Index:** 78 - **Maximum Pressure:** 30 psi - **Rim Size:** 8 inches - **Rim Width:** 8 inches - **Section Width:** 8.5 inches - **Size:** 18x8.50/9.50-8 - **Tire Aspect Ratio:** 0.78 millimeters - **Tread Depth:** 2.5 millimeters ## Images ![18x8.50-8 18x9.50-8 Inner Tubes with TR-13 Straight Valve Stem, 2 Pack - Image 1](https://m.media-amazon.com/images/I/61aHOWI+cgL.jpg) ## Available Options This product comes in different **Size** options. --- ## 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.sk/products/562193188-18x8-50-8-18x9-50-8-inner-tubes-with-tr](https://www.desertcart.sk/products/562193188-18x8-50-8-18x9-50-8-inner-tubes-with-tr) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-10-29*