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 Hole YZ 65(18-25)Elevate your off-road adventures

YZ 65(18-25)Elevate your off-road adventures with the Twin Air High-Pressure 30 PSI Radiator Cap

this tire promises unparalleled craftsmanship and reliability

durable ABS plastic with a rubber sealing ring for a leak-free fit

and valve‑related service

Perfect for hypersport motorcycles and naked performance bikes

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 Hole YZ 65(18-25)Elevate your off-road adventuresUpgrade 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