AIRMOUSE mousse rear 110/90-19 120/80-18 Race P MX 0.8 bar Small

The AIRMOUSE mousse rear 110/90-19 120/80-18 Race P MX 0.8 bar Small is a Race Performance foam insert for motocross and offroad rear tires, providing a flat-proof alternative to tubes with a pneumatic-like feel around 0.8 bar. It fits almost all 110/90-19 rear MX tires and selected 120/80-18 and Bridgestone 110/100-18 / 120/80-18 rear applications.

Technical specifications

• SKU: AM1109019RP
• Position: Rear
• Intended use: Motocross / offroad rear tire mousse
• Size / fitment: 110/90-19 and selected 120/80-18, including some Bridgestone 110/100-18 and 120/80-18
• Nominal equivalent pressure: ~0.8 bar pneumatic feel
• Construction: Fourth-generation foam rubber mousse with micro-matrix elastomer composition
• Material: Foam rubber with proprietary elastomer micro‑matrix and high nitrogen-based gas content
• Flat resistance: Flat-proof design eliminating puncture-induced flats

Performance and service context

This Race Performance mousse aims for a low-pressure, predictable ride with increased bump absorption and impact resistance, giving a traction-focused, compliant feel without a dead sensation. The soft, compliant structure is suited to more extreme and difficult terrain, and the low shrink-rate, anti-age formulation helps maintain performance over time.

Installation and contents

The kit includes one rear mousse insert sized for 110/90-19 and selected 120/80-18 applications with 0.8 bar equivalent feel. Install in place of an inner tube in the specified tire sizes, following standard mousse mounting procedures and using appropriate mousse lubricant.