{"product_id":"michelin-airstop-21-inch-standard-inner-tube-tr-4-center-side-metal-valve-part-70151","title":"Michelin Airstop 21-Inch Standard Inner Tube, TR-4 Center\/Side Metal Valve, Part 70151","description":"Inner Tube - Standard - 21\" - TR-4 - Center\/Side Metal Valve\n\u003cp\u003eThe Michelin Airstop 21-inch standard inner tube is designed for dependable performance in compatible motorcycle, scooter, and powersports applications. This tube features a TR-4 center\/side metal valve configuration and is manufactured by Michelin for riders and technicians who require a durable, well-balanced replacement tube. Vendor part number 70151 identifies this model for ordering and fitment reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Intended for wheels and tires that specify a 21-inch standard inner tube with a TR-4 center\/side metal valve. Always compare the tire size, valve location, valve type, and vehicle manufacturer requirements before installation to confirm compatibility. The tube should be installed by a qualified technician using proper mounting procedures to help prevent pinching or valve damage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e Michelin Airstop tubes place the splice opposite the valve, helping promote a more balanced tube during installation and use. The overlap splice is stronger than the butt splice commonly used in many other inner tubes, supporting reliable service in demanding riding conditions. Michelin Airstop inner tubes are selected by customers seeking high-quality construction and consistent fit in compatible applications.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSize: 21-inch standard inner tube\u003c\/li\u003e\n\u003cli\u003eModel: Airstop\u003c\/li\u003e\n\u003cli\u003eBrand: Michelin\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 70151\u003c\/li\u003e\n\u003cli\u003eVendor part number: 70151\u003c\/li\u003e\n\u003cli\u003eValve type: TR-4 center\/side metal valve\u003c\/li\u003e\n\u003cli\u003eSplice design: Overlap splice for increased strength compared with conventional butt splices\u003c\/li\u003e\n\u003cli\u003eBalance: Splice positioned opposite the valve for improved tube balance\u003c\/li\u003e\n\u003cli\u003eFitment: Compatible with applications requiring a 21-inch standard tube with a TR-4 center\/side metal valve\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MICHELIN","offers":[{"title":"Default Title","offer_id":67544861147371,"sku":"03500436","price":38.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/112200.png?v=1790648136","url":"https:\/\/ctracingservices.com\/products\/michelin-airstop-21-inch-standard-inner-tube-tr-4-center-side-metal-valve-part-70151","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}