{"id":641,"date":"2026-05-25T02:17:53","date_gmt":"2026-05-25T02:17:53","guid":{"rendered":"http:\/\/motobikemas.com\/product\/80-100-21-professional-enduro-mousse-off-road-motorcycle-front-tires\/"},"modified":"2026-05-27T04:21:28","modified_gmt":"2026-05-27T04:21:28","slug":"80-100-21-professional-enduro-mousse-off-road-motorcycle-front-tires","status":"publish","type":"product","link":"https:\/\/motobikemas.com\/ru\/product\/80-100-21-professional-enduro-mousse-off-road-motorcycle-front-tires\/","title":{"rendered":"80\/100-21 \u041f\u0440\u043e\u0444\u0435\u0441\u0441\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0439 \u044d\u043d\u0434\u0443\u0440\u043e \u043c\u0443\u0441\u0441 \u0434\u043b\u044f \u043f\u0435\u0440\u0435\u0434\u043d\u0438\u0445 \u0448\u0438\u043d \u0432\u043d\u0435\u0434\u043e\u0440\u043e\u0436\u043d\u044b\u0445 \u043c\u043e\u0442\u043e\u0446\u0438\u043a\u043b\u043e\u0432"},"content":{"rendered":"<h2>Professional 80\/100-21 Enduro Mousse for Off-Road Motorcycle Front Tires \u2014 MX &amp; Supercross Performance<\/h2>\n<p>The Motobike Mas 80\/100-21 professional enduro mousse is a closed-cell nitrile rubber foam tire insert engineered for the front wheels of motocross, supercross, and off-road motorcycles. The 80\/100-21 is the traditional motocross front tire size, favored by professional racers for its lighter steering feel, quicker turn-in response, and reduced rotating mass at the front end.<\/p>\n<p>This front mousse insert completely replaces the inner tube to eliminate dangerous front pinch flats, reduce unsprung rotating mass, and deliver razor-sharp steering precision from the starting gate to the checkered flag. Available in soft, medium, and standard density formulations, the 80\/100-21 mousse fits all standard full-size dirt bike front wheels with 21-inch rims.<\/p>\n<p>As a Tianjin, China-based B2B manufacturer, Motobike Mas offers OEM private labeling, custom hardness formulations, and direct factory wholesale pricing for dealers, distributors, and race teams worldwide.<\/p>\n<hr \/>\n<h2>Technical Specifications<\/h2>\n<table>\n<tbody>\n<tr>\n<td><strong>\u0420\u0430\u0437\u043c\u0435\u0440<\/strong><\/td>\n<td>80\/100-21<\/td>\n<\/tr>\n<tr>\n<td><strong>Fitment<\/strong><\/td>\n<td>80\/100-21 front tires (standard full-size MX\/supercross front wheel)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b<\/strong><\/td>\n<td>Closed-cell nitrile rubber foam<\/td>\n<\/tr>\n<tr>\n<td><strong>Density Options<\/strong><\/td>\n<td>Soft, Medium, Standard<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0412\u0435\u0441<\/strong><\/td>\n<td>Approx. 0.9-1.1 kg<\/td>\n<\/tr>\n<tr>\n<td><strong>Rotating Mass Reduction<\/strong><\/td>\n<td>Up to 40% vs. tube + heavy-duty rim lock<\/td>\n<\/tr>\n<tr>\n<td><strong>Effective Pressure Equivalent<\/strong><\/td>\n<td>8-12 psi<\/td>\n<\/tr>\n<tr>\n<td><strong>Service Life<\/strong><\/td>\n<td>200-500 racing miles typical<\/td>\n<\/tr>\n<tr>\n<td><strong>Country of Origin<\/strong><\/td>\n<td>Tianjin, China<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>Key Benefits<\/h2>\n<h3>Complete Front Flat Prevention<\/h3>\n<p>A front tire flat at speed is the most dangerous failure in off-road motorcycling. The 80\/100-21 front mousse eliminates this risk entirely \u2014 no pinch flats from square-edge landings, no puncture flats from rocks and thorns, and no valve stem failures. For motocross racers landing repetitive jumps and supercross riders hitting whoop sections, this means total confidence in the front end.<\/p>\n<h3>Sharper Steering &amp; Quicker Turn-In<\/h3>\n<p>With its 80 mm section width and 100% aspect ratio, the 80\/100-21 profile naturally provides faster steering response than wider front tires. Combined with the rotating mass reduction from eliminating the inner tube, the mousse-equipped front wheel turns in more eagerly, holds lines through berms with greater precision, and deflects less off square-edge obstacles.<\/p>\n<h3>Consistent Front-End Feel<\/h3>\n<p>Unlike pneumatic tires where front tire pressure drifts with temperature, altitude, and riding time, an 80\/100-21 mousse insert delivers identical damping and steering characteristics from the first practice session to the last moto. Professional racers rely on this predictability to fine-tune suspension settings without the variable of changing tire pressure.<\/p>\n<h3>Aggressive Cornering Confidence<\/h3>\n<p>The mousse allows effective pressures as low as 8 psi with zero pinch flat risk. On hard-packed berms, loose over hardpack, and rutted corners, this translates to more front-end bite and the confidence to push the front wheel harder on corner entry.<\/p>\n<h3>Zero Maintenance for Race Teams<\/h3>\n<p>Once installed, the front mousse requires zero maintenance for the life of the tire. No pressure checks between practice and qualifying, no valve stem inspections, no inconsistencies between multiple bikes. For professional race teams managing multiple machines, this eliminates a significant logistical variable.<\/p>\n<hr \/>\n<h2>Hardness Options Guide<\/h2>\n<p>Selecting the correct mousse hardness for the 80\/100-21 front wheel is critical. The 80\/100-21&#8217;s lighter front-end feel is more sensitive to density selection than wider front sizes.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Density<\/th>\n<th>Effective Pressure<\/th>\n<th>Best Terrain<\/th>\n<th>Rider Weight<\/th>\n<\/tr>\n<tr>\n<td><strong>\u041c\u044f\u0433\u043a\u0438\u0439<\/strong><\/td>\n<td>8-10 psi<\/td>\n<td>Mud, sand, wet, slippery conditions, supercross<\/td>\n<td>Under 70 kg<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0421\u0440\u0435\u0434\u043d\u0438\u0439<\/strong><\/td>\n<td>9-11 psi<\/td>\n<td>Mixed terrain, all-around motocross<\/td>\n<td>70-90 kg<\/td>\n<\/tr>\n<tr>\n<td><strong>Standard<\/strong><\/td>\n<td>10-12 psi<\/td>\n<td>Rocky, hard-packed, high-speed desert<\/td>\n<td>Over 90 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Selection Guide for 80\/100-21 Front Mousse<\/h3>\n<ul>\n<li><strong>Choose Soft<\/strong> for supercross-style tracks, wet conditions, and deep soft terrain where maximum front-end traction is needed. Ideal for lighter riders seeking aggressive cornering bite.<\/li>\n<li><strong>Choose Medium<\/strong> as the default for motocross on standard terrain \u2014 the best balance of steering precision, bump absorption, and durability for the majority of riders.<\/li>\n<li><strong>Choose Standard<\/strong> for high-speed desert racing, rocky enduro, or heavier riders who need additional front-end support under hard braking at speed.<\/li>\n<\/ul>\n<hr \/>\n<h2>Compatibility<\/h2>\n<p>This 80\/100-21 mousse insert fits all standard 80\/100-21 front tires \u2014 the classic motocross front tire size found on virtually every full-size dirt bike from all major manufacturers. It is interchangeable with 90\/90-21 front mousse applications, with the 80\/100-21 offering lighter steering feel and the 90\/90-21 offering slightly more front-end grip.<\/p>\n<h3>Motocross Bikes (250cc)<\/h3>\n<ul>\n<li>Honda CRF250R<\/li>\n<li>Yamaha YZ250F<\/li>\n<li>KTM 250 SX-F<\/li>\n<li>Husqvarna FC 250<\/li>\n<li>Kawasaki KX250<\/li>\n<li>Suzuki RM-Z250<\/li>\n<li>GasGas MC 250F<\/li>\n<\/ul>\n<h3>Motocross Bikes (450cc)<\/h3>\n<ul>\n<li>Honda CRF450R<\/li>\n<li>Yamaha YZ450F<\/li>\n<li>KTM 450 SX-F<\/li>\n<li>Husqvarna FC 450<\/li>\n<li>Kawasaki KX450<\/li>\n<li>Suzuki RM-Z450<\/li>\n<\/ul>\n<h3>Enduro \/ Cross-Country \/ Dual-Sport<\/h3>\n<ul>\n<li>KTM 300 XC-W \/ 350 EXC-F \/ 500 EXC-F<\/li>\n<li>Husqvarna TE 300 \/ FE 350 \/ FE 501<\/li>\n<li>Beta RR 300 \/ RR 350 \/ RR 430 \/ RR 480<\/li>\n<li>Sherco SE 300 \/ SE 500 \/ SE 700<\/li>\n<li>GasGas EC 250 \/ EC 300<\/li>\n<li>Honda CRF450X \/ CRF450RL<\/li>\n<li>Yamaha WR250F \/ WR450F<\/li>\n<li>Suzuki RMX450Z<\/li>\n<\/ul>\n<hr \/>\n<h2>80\/100-21 vs. 90\/90-21 \u2014 Front Mousse Comparison<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Specification<\/th>\n<th>80\/100-21<\/th>\n<th>90\/90-21<\/th>\n<\/tr>\n<tr>\n<td><strong>Section Width<\/strong><\/td>\n<td>80 mm<\/td>\n<td>90 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>Aspect Ratio<\/strong><\/td>\n<td>100%<\/td>\n<td>90%<\/td>\n<\/tr>\n<tr>\n<td><strong>Overall Diameter<\/strong><\/td>\n<td>Slightly smaller<\/td>\n<td>Slightly larger<\/td>\n<\/tr>\n<tr>\n<td><strong>Steering Feel<\/strong><\/td>\n<td>Lighter, faster turn-in<\/td>\n<td>More grip, slightly heavier<\/td>\n<\/tr>\n<tr>\n<td><strong>\u041b\u0443\u0447\u0448\u0435\u0435 \u0434\u043b\u044f<\/strong><\/td>\n<td>Motocross, supercross, hard-packed tracks<\/td>\n<td>Enduro, loose terrain, technical off-road<\/td>\n<\/tr>\n<tr>\n<td><strong>Front-End Grip<\/strong><\/td>\n<td>Good \u2014 quicker steering at cost of ultimate grip<\/td>\n<td>Excellent \u2014 more rubber on the ground<\/td>\n<\/tr>\n<tr>\n<td><strong>Mousse Weight<\/strong><\/td>\n<td>0.9-1.1 kg<\/td>\n<td>1.0-1.2 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>For motocross and supercross riders who prioritize quick handling and light steering, the 80\/100-21 is the traditional choice. For enduro and off-road riders who need maximum front-end grip in loose conditions, the 90\/90-21 offers a wider contact patch.<\/p>\n<hr \/>\n<h2>Maintenance and Service Life<\/h2>\n<h3>Expected Lifespan<\/h3>\n<p>An 80\/100-21 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.<\/p>\n<h3>Signs It Needs Replacement<\/h3>\n<ul>\n<li>Mousse feels noticeably softer or spongy compared to new<\/li>\n<li>Visible tears, chunks missing, or deformation<\/li>\n<li>Vague steering feel \u2014 reduced front-end confidence in corners<\/li>\n<li>Excessive heat during use (mousse should be warm, not hot)<\/li>\n<\/ul>\n<h3>Storage Tips<\/h3>\n<ul>\n<li>Store in a cool, dry place away from direct sunlight<\/li>\n<li>Do not store compressed or folded<\/li>\n<li>Keep away from ozone sources (electric motors, welding equipment)<\/li>\n<li>Shelf life in sealed packaging: 3-5 years<\/li>\n<\/ul>\n<hr \/>\n<h2>Installation Guide (Front Wheel)<\/h2>\n<ol>\n<li>Remove existing front tire and tube from rim completely<\/li>\n<li>Clean 21-inch front rim bead seat area thoroughly<\/li>\n<li>Apply mousse lubricant generously inside the front tire casing<\/li>\n<li>Apply lubricant to the 80\/100-21 mousse insert itself<\/li>\n<li>Insert mousse into tire, working evenly around the casing<\/li>\n<li>Mount one bead onto the rim using tire irons<\/li>\n<li>Seat second bead carefully to avoid pinching the mousse<\/li>\n<li>Install front wheel, ensuring axle and spacers are properly aligned<\/li>\n<\/ol>\n<p><strong>Important:<\/strong> Never use petroleum-based lubricants on mousse inserts \u2014 they degrade nitrile rubber. Use only water-based mousse lubricant. The 80\/100-21&#8217;s narrower profile requires careful seating to prevent the mousse from bunching during installation.<\/p>\n<hr \/>\n<h2>B2B Wholesale \u2014 Why Partner with Motobike Mas?<\/h2>\n<p>Motobike Mas is a Tianjin, China-based manufacturer of mousse inserts for off-road motorcycle racing tires. We supply dealers, distributors, race teams, and aftermarket brands worldwide with factory-direct pricing and full customization.<\/p>\n<table>\n<tbody>\n<tr>\n<td><strong>Factory Pricing<\/strong><\/td>\n<td>Direct wholesale \u2014 no middlemen<\/td>\n<\/tr>\n<tr>\n<td><strong>OEM \/ Private Label<\/strong><\/td>\n<td>Custom branding, packaging, and colors<\/td>\n<\/tr>\n<tr>\n<td><strong>Custom Formulations<\/strong><\/td>\n<td>Adjust density and material properties including front-specific formulations<\/td>\n<\/tr>\n<tr>\n<td><strong>MOQ<\/strong><\/td>\n<td>Contact for minimums<\/td>\n<\/tr>\n<tr>\n<td><strong>Shipping<\/strong><\/td>\n<td>Sea (FOB Tianjin), air freight, DDP available<\/td>\n<\/tr>\n<tr>\n<td><strong>Samples<\/strong><\/td>\n<td>Pre-production samples for evaluation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>Related Products<\/h2>\n<ul>\n<li><a href=\"https:\/\/motobikemas.com\/ru\/product\/90-90-21-off-road-motorcycle-mousse-insert-enduro-front-tires\/\">90\/90-21 Off-Road Motorcycle Mousse Insert<\/a> \u2014 Wider front mousse for enduro and off-road front wheels<\/li>\n<li><a href=\"https:\/\/motobikemas.com\/ru\/product\/100-90-19-high-performance-motorcycle-mousse-for-motocross-tires\/\">100\/90-19 High Performance Motorcycle Mousse<\/a> \u2014 Rear wheel mousse for MX and enduro<\/li>\n<li><a href=\"https:\/\/motobikemas.com\/ru\/product\/110-90-19-motocross-mousse-insert-mx-dirt-bike-racing\/\">110\/90-19 Motocross Mousse Insert<\/a> \u2014 Rear wheel mousse for full-size MX bikes<\/li>\n<li><a href=\"https:\/\/motobikemas.com\/ru\/product\/70-100-19-front-wheel-motorcycle-mousse-for-motocross-dirt-bikes\/\">70\/100-19 Front Wheel Motorcycle Mousse<\/a> \u2014 Front mousse for youth MX and pit bikes<\/li>\n<li><a href=\"https:\/\/motobikemas.com\/ru\/product\/120-90-18-enduro-motorcycle-mousse-insert\/\">120\/90-18 Enduro Motorcycle Mousse Insert<\/a> \u2014 For enduro and rally rear wheels (18-inch)<\/li>\n<\/ul>\n<hr \/>\n<h2>Frequently Asked Questions<\/h2>\n<h3>Is 80\/100-21 a front or rear tire size?<\/h3>\n<p>80\/100-21 is a front wheel tire size \u2014 the classic motocross front tire standard. It has been the dominant front tire size for full-size motocross bikes for decades, though many modern bikes now also support the 90\/90-21 size.<\/p>\n<h3>What is the difference between 80\/100-21 and 90\/90-21?<\/h3>\n<p>The 80\/100-21 has an 80 mm section width versus 90 mm on the 90\/90-21. The 80\/100-21 offers lighter steering feel and faster turn-in, making it popular in motocross and supercross. The 90\/90-21 provides a larger contact patch for more front-end grip, making it preferred for enduro and loose terrain.<\/p>\n<h3>Can I use an 80\/100-21 mousse in a 90\/90-21 tire?<\/h3>\n<p>No. Mousse inserts are size-specific. An 80\/100-21 mousse is designed for 80\/100-21 tires. Using the wrong size mousse will result in improper fitment, reduced performance, and potential safety issues. Always match the mousse size to your tire size exactly.<\/p>\n<h3>How long does an 80\/100-21 front mousse last?<\/h3>\n<p>Typically 200-500 racing miles. Front mousses often last longer than rear units due to lower heat generation from braking loads compared to the driving loads on a rear wheel.<\/p>\n<h3>Why do motocross racers prefer 80\/100-21 over 90\/90-21?<\/h3>\n<p>Many MX racers prefer the 80\/100-21 for its lighter steering feel and quicker turn-in characteristics, particularly on hard-packed tracks and supercross-style layouts where rapid direction changes are critical.<\/p>\n<h3>Does Motobike Mas offer samples before bulk orders?<\/h3>\n<p>Yes. B2B clients can request samples for evaluation before committing to volume orders. Contact our sales team to arrange sample shipments.<\/p>\n<h3>What is the lead time for OEM orders?<\/h3>\n<p>Typical lead time is 15-30 days for standard OEM production, depending on quantity and customization requirements.<\/p>","protected":false},"excerpt":{"rendered":"<p>The Motobike Mas 80\/100-21 professional enduro mousse is a nitrile rubber foam tire insert for MX &amp; supercross front wheels. Classic MX front size with lighter steering feel. Eliminates front pinch flats, reduces rotating mass. B2B wholesale from Tianjin, China.<\/p>","protected":false},"featured_media":607,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[18],"product_tag":[139,128,138,133,142,147,144,137,145,140,131,129,136,132,143,146,134,130,135,141],"class_list":["post-641","product","type-product","status-publish","has-post-thumbnail","product_cat-motorcycle-mousse","product_tag-21-inch-rim","product_tag-80-100-21","product_tag-80mm-section","product_tag-berm-carving","product_tag-crf450r-front","product_tag-front-chassis-setup","product_tag-gate-drop","product_tag-hard-pack-track","product_tag-jump-landing","product_tag-kx450-front","product_tag-motocross-front","product_tag-mx-front-mousse","product_tag-pro-racing","product_tag-quick-turn-in","product_tag-rmz450-front","product_tag-rutted-corner","product_tag-starting-gate","product_tag-supercross-tire","product_tag-whoop-section","product_tag-yz450f-front","first","instock","shipping-taxable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.1 (Yoast SEO v25.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>80\/100-21 Professional Enduro Mousse for Off-Road Motorcycle Front Tires | Motobike Mas<\/title>\n<meta name=\"description\" content=\"B2B wholesale 80\/100-21 professional enduro mousse for off-road motorcycle front tires. 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