--- product_id: 474371940 title: "2.25/2.50-16 (70/90-16) Heavy Duty Inner Tube – 2mm Butyl Rubber, TR4 Straight Valve – Fits Mini Dirt Bikes, Pit Bikes, Motocross & Trail Bikes" brand: "pivotrax" price: "B/.98" currency: PAB in_stock: true reviews_count: 12 url: https://www.desertcart.com.pa/products/474371940-2-25-2-50-16-70-90-16-heavy-duty store_origin: PA region: Panama --- # TR4 Straight Valve - Leak & Bend Resistant Fits 16" Mini Dirt & Pit Bikes - Versatile Fit 2mm Butyl Rubber - Heavy-Duty Durability 2.25/2.50-16 (70/90-16) Heavy Duty Inner Tube – 2mm Butyl Rubber, TR4 Straight Valve – Fits Mini Dirt Bikes, Pit Bikes, Motocross & Trail Bikes **Brand:** pivotrax **Price:** B/.98 **Availability:** ✅ In Stock ## Summary > 🏁 Ride Hard, Ride Smart – Never Let a Flat Slow You Down! ## Quick Answers - **What is this?** 2.25/2.50-16 (70/90-16) Heavy Duty Inner Tube – 2mm Butyl Rubber, TR4 Straight Valve – Fits Mini Dirt Bikes, Pit Bikes, Motocross & Trail Bikes by pivotrax - **How much does it cost?** B/.98 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/474371940-2-25-2-50-16-70-90-16-heavy-duty) ## Best For - pivotrax enthusiasts ## Why This Product - Trusted pivotrax brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Valve Tech:** TR4 metal valve stem ensures airtight seal and resists bending under pressure. - • **Trail-Ready Toughness:** 2mm reinforced butyl rubber absorbs shocks for smoother, more controlled rides. - • **All-Season Reliability:** Performs flawlessly in hot, cold, wet, or dry conditions—trail-ready year-round. - • **Universal Mini Bike Fit:** Compatible with 2.25/2.50-16 and 70/90-16 tires on most mini dirt, pit, and motocross bikes. - • **Puncture-Proof Confidence:** Engineered to minimize flats and blowouts so you never miss a ride. ## Overview The PIVOTRAX 2.25/2.50-16 Heavy Duty Inner Tube features a robust 2mm butyl rubber construction and a TR4 straight metal valve stem designed for superior puncture resistance and leak prevention. Perfectly sized for 16-inch mini dirt, pit, and motocross bikes, it delivers consistent air retention and shock absorption for reliable, all-season off-road performance. ## Features - Puncture Resistant: Designed to minimize flats and blowouts. Protects both rider and bike in all seasons and conditions—hot, cold, wet, or dry—offering dependable performance. - Versatile Fit: Replacement inner tube for 2.25/2.50-16 and 70/90-16 tires. Compatible with most 16” mini dirt bikes, pit bikes, and small off-road motorcycles. - Motocross & Enduro Ready: Engineered for motocross, enduro, trail, and pit bike riding. Provides consistent air retention, stable handling, and long-lasting reliability. - Heavy-Duty TR4 Valve Stem: Features a straight TR4 metal valve stem with seamless construction to prevent leaks and resist bending under high PSI and aggressive use. - Durable Butyl Rubber: Built with 2mm reinforced butyl rubber for strength and flexibility. Absorbs shocks, bumps, and rough terrain to deliver smoother rides on trails and motocross tracks. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0B2NP5K6W | | Best Sellers Rank | #525 in Automotive (See Top 100 in Automotive) #2 in Powersports Inner Tubes | | Bike Type | Motocross/Enduro Bike | | Brand Name | PIVOTRAX | | Compatible Tire Width Maximum | 8 centimeters | | Compatible Tire Width Minimum | 5.7 centimeters | | Customer Reviews | 4.3 4.3 out of 5 stars (1,774) 4.3 out of 5 stars | | Item Diameter | 16 inches | | Item Width | 2.25 inches | | Manufacturer | PIVOTRAX | | Manufacturer Part Number | NT225250162MM | | Material Type | Rubber | | Model Number | NT225250162MM | | Number Of Items | 1 | | Size | 2.25/2.50-16 (70/90-16) | | Valve Type | Schrader | | Wheel Size | 16 inches | ## Product Details - **Brand:** PIVOTRAX - **Item Diameter:** 16 Inches - **Material:** Rubber - **Valve Type:** Schrader - **Wheel Size:** 16 Inches ## Images ![2.25/2.50-16 (70/90-16) Heavy Duty Inner Tube – 2mm Butyl Rubber, TR4 Straight Valve – Fits Mini Dirt Bikes, Pit Bikes, Motocross & Trail Bikes - Image 1](https://m.media-amazon.com/images/I/71kR+cbxnLL.jpg) ![2.25/2.50-16 (70/90-16) Heavy Duty Inner Tube – 2mm Butyl Rubber, TR4 Straight Valve – Fits Mini Dirt Bikes, Pit Bikes, Motocross & Trail Bikes - Image 2](https://m.media-amazon.com/images/I/81A+8OnPSBL.jpg) ![2.25/2.50-16 (70/90-16) Heavy Duty Inner Tube – 2mm Butyl Rubber, TR4 Straight Valve – Fits Mini Dirt Bikes, Pit Bikes, Motocross & Trail Bikes - Image 3](https://m.media-amazon.com/images/I/81NSV9PrM1L.jpg) ![2.25/2.50-16 (70/90-16) Heavy Duty Inner Tube – 2mm Butyl Rubber, TR4 Straight Valve – Fits Mini Dirt Bikes, Pit Bikes, Motocross & Trail Bikes - Image 4](https://m.media-amazon.com/images/I/81zRXjCRWgL.jpg) ![2.25/2.50-16 (70/90-16) Heavy Duty Inner Tube – 2mm Butyl Rubber, TR4 Straight Valve – Fits Mini Dirt Bikes, Pit Bikes, Motocross & Trail Bikes - Image 5](https://m.media-amazon.com/images/I/81tJI2dj4AL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fast and Good *by on Reviewed in the United States September 17, 2026* Shipped quick and seems to be a good quality, heavy tube ### ⭐⭐⭐⭐⭐ Make sure you take your time *by on Reviewed in the United States September 12, 2026* Awesome and reliable ### ⭐⭐⭐⭐⭐ Pivotrax heavy duty inner tube *by on Reviewed in the United States August 18, 2026* Great heavy duty inner tube. No issues encountered in regards to air loss thru air valve. --- ## 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.com.pa/products/474371940-2-25-2-50-16-70-90-16-heavy-duty](https://www.desertcart.com.pa/products/474371940-2-25-2-50-16-70-90-16-heavy-duty) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-25*