{"product_id":"pirelli-motocross-mousse-set-80-100-21-front-x-21b2-110-90-19-rear-x-19e1-foam-inserts-flat-proof-off-road-tire-inserts-for-mx-dirt-bikes-medium-compound-nhs","title":"Pirelli Motocross Mousse Set – 80\/100-21 Front (X-21B2) \u0026 110\/90-19 Rear (X-19E1) Foam Inserts | Flat-Proof Off-Road Tire Inserts for MX Dirt Bikes | Medium Compound | NHS","description":"Upgrade your motocross setup with genuine Pirelli Mousse foam inserts sized for the most common MX tire combination: 80\/100-21 front and 110\/90-19 rear. These medium-compound rubber foam mousses are engineered to replace conventional inner tubes, delivering puncture-proof reliability while maintaining a lively, consistent ride feel. Once installed, they simulate roughly 0.7 bar of pressure, providing excellent traction, agility, and side-wall support demanded in competitive Motocross environments.","brand":"Pirelli","offers":[{"title":"Default Title","offer_id":52765795516703,"sku":"9361100 9254700","price":299.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0813\/2195\/1519\/files\/image_8c0f4d90-33c2-457b-a267-45aa7bbabd5a.png?v=1786361499","url":"https:\/\/massdepot.com\/products\/pirelli-motocross-mousse-set-80-100-21-front-x-21b2-110-90-19-rear-x-19e1-foam-inserts-flat-proof-off-road-tire-inserts-for-mx-dirt-bikes-medium-compound-nhs","provider":"Mass Depot","version":"1.0","type":"link"}