The Motobike Mas 90/90-21 off-road motorcycle mousse insert is a nitrile rubber foam tire insert for enduro & MX front wheels. Standard fitment for full-size dirt bikes. Eliminates front pinch flats, reduces rotating mass. B2B wholesale from Tianjin, China.
| 1.1 바 | 최적의 속도 성능 |
|---|---|
| 0.8 바 | 사막, 초원, 고비 지형에 적합 |
| 0.5 바 | 숲길에 최적화 |
| 0.3 바 | 테크니컬 오프로드 라이딩을 위한 익스트림 엔듀로 무스 |
The Motobike Mas 90/90-21 off-road motorcycle mousse insert is a professional-grade closed-cell nitrile rubber foam tire insert engineered for the front wheels of enduro, motocross, and off-road motorcycles. The 90/90-21 is the standard front wheel size for virtually all full-size dirt bikes — making this mousse one of the most widely compatible front-end protection solutions in off-road racing.
This front mousse insert completely replaces the inner tube to eliminate dangerous front pinch flats, reduce unsprung rotating mass, and deliver consistent steering precision across the most demanding terrain. Available in soft, medium, and standard density formulations, the 90/90-21 mousse fits all standard full-size dirt bike front wheels.
중국 톈진에 본사를 둔 B2B 제조업체인 모토바이크 마스는 전 세계 딜러, 유통업체 및 레이스 팀을 위해 OEM 개인 라벨링, 맞춤형 경도 공식 및 직접 공장 도매 가격을 제공합니다.
| 크기 | 90/90-21 |
| 피팅 | 90/90-21 front tires (standard full-size MX/enduro front wheel) |
| 재료 | 폐쇄 셀 니트릴 고무 폼 |
| 밀도 옵션 | 소프트, 중간, 표준 |
| 무게 | Approx. 1.0-1.2 kg |
| 회전 질량 감소 | 최대 40% 대 튜브 + 헤비 듀티 림 잠금 장치 |
| 유효 압력 등가 | 8-12 psi |
| 서비스 수명 | 일반적으로 200-500 레이싱 마일 |
| 원산지 국가 | 톈진, 중국 |
A front tire flat at speed is the most dangerous failure in off-road motorcycling — it causes immediate loss of steering control. The 90/90-21 front mousse eliminates this risk entirely. No pinch flats from square-edge log impacts, no puncture flats from rocks and thorns, no valve stem failures. For enduro racers navigating technical terrain and motocross racers landing heavy jumps, this means no DNFs from front-end failures.
Reducing unsprung rotating mass on the 21-inch front wheel dramatically improves steering response and suspension compliance. By eliminating the inner tube and allowing a lighter rim lock, the 90/90-21 front mousse reduces front wheel rotating mass by up to 40%. The result: lighter steering effort, reduced deflection off roots and rocks, and more precise front-end feedback.
Unlike pneumatic tires where front tire pressure changes with temperature, altitude, and riding time, a mousse insert delivers identical damping and steering characteristics from the first corner to the last. For enduro riders covering varied terrain over hours of racing, this predictability is invaluable for maintaining consistent corner entry speed and line choice.
The 90/90-21 front mousse allows riders to run effective pressures as low as 8 psi with zero risk of pinch flats. On loose over hardpack, wet roots, and sandy sections, this translates to significantly more front-end grip and confidence in corner entry. The foam absorbs square-edge impacts that would instantly collapse a tube at low pressure.
Once installed, the front mousse requires zero maintenance for the life of the tire. No air pressure checks before practice or race starts, no valve stem inspections, no gauges or pumps. For race teams managing multiple bikes and enduro riders preparing for long events, this simplifies preparation and eliminates one more variable.
Selecting the correct mousse hardness for the 90/90-21 front wheel is critical for both performance and safety. The wrong density can cause vague steering, excessive deflection, or premature wear.
| 밀도 | 유효 압력 | 최고의 지형 | 라이더 체중 |
|---|---|---|---|
| 소프트 | 8-10 psi | Mud, sand, wet roots, slippery conditions | 70kg 미만 |
| Medium | 9-11 psi | Mixed terrain, enduro, all-around use | 70-90kg |
| 표준 | 10-12 psi | 바위, 딱딱한 포장, 사막, 고속 | 90kg 이상 |
This 90/90-21 mousse insert fits all standard 90/90-21 front tires — the industry-standard front tire size for full-size off-road motorcycles. It is compatible with virtually all full-size dirt bikes from every major manufacturer.
| 팩터 | Front Mousse Insert (90/90-21) | Front Inner Tube |
|---|---|---|
| 플랫 방지 | 100% — no front flats possible | Vulnerable to pinch flats, especially on log impacts |
| Steering precision | 레이스 전반에 걸쳐 일관성 유지 | 압력 및 온도에 따른 변화 |
| 유지 관리 | 제로 - 설치 후 잊어버리기 | 라이딩 전 매번 압력 확인 |
| 회전 질량 | 하단(튜브 없음 + 라이터 림 잠금장치) | 더 높음 |
| Safety | No sudden steering loss | Sudden control loss on front flat |
| Installation | Moderate difficulty | 더 쉬움 |
| 지형 적응성 | 밀도 선택에 따른 수정 | 압력을 통해 조절 가능 |
| 재사용 가능성 | 새 타이어로 교체(상태가 양호한 경우) | 타이어 교체 시마다 교체 |
| 사양 | 90/90-21 | 80/100-21 |
|---|---|---|
| 섹션 너비 | 90mm | 80mm |
| 화면 비율 | 90% (taller sidewall) | 100% (taller profile overall) |
| 전체 지름 | 약간 더 큰 | 약간 작음 |
| Typical Application | Enduro, trail, off-road | Motocross, supercross |
| 스티어링 감각 | More front-end grip, slightly heavier steering | Lighter steering, faster turn-in |
| 최고의 지형 | Loose, soft, technical enduro | Hard-packed, berms, deep loam |
A 90/90-21 front mousse insert typically lasts between 200 and 500 racing miles, depending on terrain, rider weight, riding speed, and lubrication during installation. Front mousses generally wear more slowly than rear units due to lower heat generation from braking loads compared to the driving loads on a rear wheel.
중요: Never use petroleum-based lubricants on mousse inserts — they degrade nitrile rubber. Use only water-based mousse lubricant. Proper seating is especially critical on 21-inch front wheels where any imbalance will be felt through the handlebars at speed.
모토바이크 마스는 중국 톈진에 본사를 둔 오프로드 모터사이클 레이싱 타이어용 무스 인서트 제조업체입니다. 전 세계 딜러, 유통업체, 레이싱 팀, 애프터마켓 브랜드에 공장에서 직접 가격을 책정하고 완벽한 맞춤형 제품을 공급합니다.
| 공장 출하 가격 | 직접 도매 - 중개자 없음 |
| OEM / 개인 상표 | 맞춤형 브랜딩, 패키징 및 색상 |
| 맞춤형 포뮬레이션 | 전면별 배합을 포함한 밀도 및 재료 특성 조정 |
| MOQ | 최소 금액 문의 |
| 배송 | 해상(FOB 톈진), 항공 화물, DDP 이용 가능 |
| 샘플 | 평가용 사전 제작 샘플 |
90/90-21 is a front wheel tire size — the industry standard front tire for virtually all full-size motocross and enduro motorcycles. The 21-inch diameter rim is universal across 250cc and 450cc dirt bike classes from every major manufacturer.
The 90/90-21 has a 90 mm section width with a 90% aspect ratio, while the 80/100-21 has an 80 mm width with a 100% aspect ratio. The 90/90-21 offers slightly more front-end grip and a slightly larger overall diameter, making it popular for enduro and off-road riding. The 80/100-21 provides lighter steering feel and is more common in motocross.
Typically 200-500 racing miles. Front mousses often last longer than rear units because they generate less heat under braking compared to the driving loads on a rear mousse.
If your motorcycle has a 21-inch front wheel and uses 90/90-21 front tires, this mousse will fit. This covers virtually all full-size motocross and enduro bikes from Honda, Yamaha, Kawasaki, Suzuki, KTM, Husqvarna, GasGas, Beta, Sherco, and more.
Yes. Many enduro and trail riders choose a mousse for the front wheel for safety and consistency while running a tube on the rear. However, running mousse on both wheels provides the best overall performance and flat protection.
예. B2B 고객은 대량 주문을 약정하기 전에 평가용 샘플을 요청할 수 있습니다. 샘플 배송을 준비하려면 영업팀에 문의하세요.
일반적인 리드 타임은 표준 OEM 생산의 경우 수량 및 사용자 지정 요구 사항에 따라 15~30일입니다.
