The NitroMousse Plushie Soft Foam Inner Tube is a high-performance alternative to traditional pneumatic inner tubes for off-road motorcycles. Designed for 90/100-21 tire applications, this NITROMOUSSE mousse tube uses proprietary elastomer foam with millions of nitrogen-charged micro-cells to provide a consistent, flat-proof ride without air pressure maintenance.
With a feel that simulates approximately 6–8 psi, the Plushie Soft compound delivers a compliant ride and controlled handling across demanding terrain. The foam construction eliminates the risk of conventional punctures and pinch flats, making it well suited for motocross, enduro, trail riding, and other off-road applications where durability and dependable performance are essential. Its fitment is intended for compatible 21-inch front motorcycle tires in the 90/100-21 size range; verify tire and motorcycle compatibility before installation.
Manufactured by NitroMousse and sold under the NITROMOUSSE brand, this product is identified by manufacturer part number NMS21-235 and vendor part number NMS21-235. Installation should follow the manufacturer’s recommended procedures, including the use of appropriate mounting tools and lubricant. As a foam insert rather than a pneumatic tube, it does not require inflation, but proper fitment and installation are important for safe, consistent performance.
Features:
- Size: 90/100-21
- Model: Plushie Soft
- Brand: NITROMOUSSE
- Manufacturer: NitroMousse
- Manufacturer Part Number: NMS21-235
- Vendor Part Number: NMS21-235
- Construction: Proprietary elastomer foam with nitrogen-charged micro-cells
- Performance: Simulates approximately 6–8 psi
- Protection: Flat-proof replacement for traditional pneumatic inner tubes
- Fitment: Compatible with select 21-inch front off-road motorcycle tires in the 90/100-21 size range