NitroMousse Nitro Mousse NMS21-235 Plushie Soft Mousse Motorcycle Tube 90/100-21 Flat Proof Foam Insert

OVERVIEW

The NitroMousse NMS21-235 Plushie Soft mousse tube is a 100 percent flat-proof foam insert engineered to replace standard pneumatic inner tubes on off-road motorcycles. Built from proprietary elastomer construction, it delivers consistent handling and puncture immunity for dirt bikes used in enduro, trail, and hard-enduro applications.

ENGINEERING & PERFORMANCE

Infused with millions of nitrogen-charged micro-cells, this insert eliminates puncture vulnerability while maintaining steady compression under load. The Plushie Soft compound mimics the cushion of six to eight pounds of air pressure, absorbing trail chatter and providing predictable grip during low-speed rock crawling and technical maneuvers. Riders gain reliable wheel control through rough sections without facing sudden deflation or the maintenance cycle associated with air-filled chambers.

KEY FEATURES

• 100% flat-proof foam tube design
• Proprietary elastomer compound construction
• Millions of nitrogen-charged micro-cells
• Plushie Soft formula simulates 6–8 psi pressure
• Engineered for maximum traction on rocky and technical terrain
• Designed specifically for front 90/100-21 tire sizes
• Replaces standard pneumatic inner tubes
• Optimized for enduro, trail, and hard-enduro riding

TECHNICAL SPECIFICATIONS

• Brand: NitroMousse
• Part Name: NMS21-235 Plushie Soft Mousse Tube
• Product Type: Foam Inner Tube / Mousse Insert
• Material: Proprietary Elastomer with Nitrogen-Charged Micro-Cells
• Tire Size: 90/100‑21
• Application: Front Wheel Mounting for Off-Road Motorcycles
• Model Compatibility: Most Enduro, Trail, and Hard-Enduro Machines Using 90/100‑21 Front Tires

FITMENT

• 90/100‑21 Front Tire Applications
• All Enduro, Trail, and Hard-Enduro Motorcycles Using This Dimension

WHY RIDERS CHOOSE THIS

Riders select this mousse insert to eliminate flat tires and the routine pressure checks that disrupt trail rides. The nitrogen-infused elastomer core provides a progressive flex pattern that keeps the tread planted over roots, rocks, and hardpack without feeling harsh or unforgiving. By removing air pressure variables, the tube maintains consistent sidewall support through high-stress turns and significantly reduces rim damage from impact events. It delivers reliable, race-ready handling straight out of the packaging without requiring specialized inflators or liquid sealants.