Pirelli Enduro/Rally Mousse Set – 90/90-21 Front (E-21C1) & 140/80-18 Rear (R-18H1) Foam Inserts | Flat-Proof Off-Road Tire Inserts | Medium Compound | NHS White Lithium Grease durable aircraft‑grade wire rope

durable aircraft‑grade wire rope

and durability on surfaces ranging from hardpack to loose dirt and technical trails

Constructed using Meta‑Foam

4' Type 196-2 K spirit level and protective bags

Pirelli Enduro/Rally Mousse Set – 90/90-21 Front (E-21C1) & 140/80-18 Rear (R-18H1) Foam Inserts | Flat-Proof Off-Road Tire Inserts | Medium Compound | NHS White Lithium Grease durable aircraft‑grade wire ropeUpgrade your Enduro or Rally setup with genuine Pirelli Mousse foam inserts sized for popular off road combinations: 90 90 21 front and 140 80 18 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 sidewall support