{"product_id":"silca-protocol-rcg-1-tubeless-gravel-tire","title":"Silca Protocol RCG-1 Tubeless Gravel Tire","description":"\u003cstyle\u003e\n  .tech-spec-table {\n    width: 100%;\n    border-collapse: collapse;\n    margin: 20px 0;\n    font-size: 14px;\n  }\n  .tech-spec-table th, .tech-spec-table td {\n    padding: 10px 12px;\n    text-align: left;\n    border-bottom: 1px solid #e2e8f0;\n  }\n  .tech-spec-table th {\n    background: #f8fafc;\n    font-weight: 700;\n    color: #0f172a;\n    width: 32%;\n  }\n  .tech-spec-table td {\n    color: #334155;\n  }\n  .silca-highlight-grid {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));\n    gap: 16px;\n    margin: 24px 0;\n  }\n  .silca-card {\n    background: #f8fafc;\n    border: 1px solid #e2e8f0;\n    border-radius: 10px;\n    padding: 16px;\n  }\n  .silca-card h4 {\n    margin: 0 0 8px 0;\n    font-size: 15px;\n    color: #0f172a;\n    display: flex;\n    align-items: center;\n    gap: 8px;\n  }\n  .silca-card p {\n    margin: 0;\n    font-size: 13.5px;\n    color: #475569;\n    line-height: 1.5;\n  }\n\u003c\/style\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSILCA Protocol RCG-1 Tubeless Gravel Tire\u003c\/strong\u003e shatters conventional tire design. For years, the cycling industry treated gravel tires like oversized road tires—pumping up thick, heavy rubber casings with sluggish tread blocks as volume increased. SILCA turned the paradigm on its head: rather than blowing up a road tire, the Protocol RCG-1 was born by taking a championship cross-country (XC) mountain bike tire and distilling it down to its purest, fastest gravel racing essentials.\u003c\/p\u003e\n\n\u003cp\u003eEngineered around modern wide rims and low inflation pressures, the Protocol RCG-1 combines an inverse-thickness 120 TPI supple casing, zero-stretch Carbon BeadLock™ construction, and an asymmetric variable-height tread layout to deliver blistering rolling speed on hardpack with aggressive bite through loose corners.\u003c\/p\u003e\n\n\u003cdiv class=\"silca-highlight-grid\"\u003e\n  \u003cdiv class=\"silca-card\"\u003e\n    \u003ch4\u003e⚡ XC-Distilled 120 TPI Casing\u003c\/h4\u003e\n    \u003cp\u003eHigh-volume, ultra-supple 120 TPI casing eliminates dead rubber weight. Inverse scaling ensures the widest widths use the thinnest casings for maximal rolling efficiency and compliance.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"silca-card\"\u003e\n    \u003ch4\u003e🛡️ Low-Tension Deflection Armor\u003c\/h4\u003e\n    \u003cp\u003eOperates on the \"mop head\" physics principle: reduced casing tension at modern gravel pressures deflects over sharp stones rather than cutting, resisting punctures without heavy rubber.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"silca-card\"\u003e\n    \u003ch4\u003e🎯 Variable-Height Tread\u003c\/h4\u003e\n    \u003cp\u003eTaller shoulder lugs engage cornering traction earlier and at shallower lean angles. Directional center track minimizes straight-line Crr while 40° outer blocks bite off-camber loose dirt.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"silca-card\"\u003e\n    \u003ch4\u003e🔒 Carbon BeadLock™ Tech\u003c\/h4\u003e\n    \u003cp\u003eReplaces moisture-absorbing Kevlar with rigid carbon fiber beads. Eliminates bead stretch, bead creep, lumpiness, and tire wobble for a lifetime airtight rim lock.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eInverse Casing Architecture \u0026amp; The Physics of Deflection\u003c\/h3\u003e\n\u003cp\u003eHistorically, tire makers assumed that wider gravel tires required thicker, stiffer carcasses to survive sharp gravel. SILCA’s rolling resistance lab proved the exact opposite: high-volume tires running at modern gravel pressures naturally distribute impact energy over a significantly wider contact patch.\u003c\/p\u003e\n\u003cp\u003eThink of it like the dangling ends of a mop head: loose, low-tension strands are nearly impossible to slice with a blade, whereas strands pulled taut cut instantly. By designing the 120 TPI casing to operate at low structural tension, the Protocol RCG-1 deflects around trail hazards instead of shearing. This allows SILCA to utilize a thinner, faster-rolling tread compound that delivers benchmark wattage savings while remaining remarkably resilient against flats.\u003c\/p\u003e\n\n\u003ch3\u003eVariable-Height Asymmetric Tread Architecture\u003c\/h3\u003e\n\u003cp\u003eMost traditional gravel tires struggle when pushed hard into corners. Uniform knob heights force the entire tire casing to deform under lateral load until tread blocks pinch closed, flatten out, and lose their biting edges. The SILCA Protocol RCG-1 solves this with a progressive \u003cstrong\u003evariable-height tread architecture\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirectional Center Track:\u003c\/strong\u003e Low-profile center blocks minimize rolling resistance and vibration on pavement, tarmac connectors, and packed dirt.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndependent Braking \u0026amp; Acceleration Edges:\u003c\/strong\u003e Asymmetric fore-and-aft tread blocks provide directional drive traction during steep out-of-the-saddle climbs and decisive stopping power under heavy braking.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTaller 40-Degree Shoulder Knobs:\u003c\/strong\u003e Outer lugs stand taller than the center tread, engaging gravel surfaces earlier and at shallower lean angles to rail corners without casing squirm or edge collapse.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCarbon BeadLock™ \u0026amp; Latex-Friendly Tubeless Integration\u003c\/h3\u003e\n\u003cp\u003eFolding tires have historically relied on Kevlar beads, which inherently absorb ambient moisture over time. This triggers material \"creep\"—resulting in shrinkage, localized bead lumpiness, and frustrating side-to-side tire wobble. SILCA completely eliminated Kevlar in favor of ultra-stiff \u003cstrong\u003eCarbon BeadLock™\u003c\/strong\u003e technology. With zero material stretch and zero moisture retention, the tire locks into the rim bead channel with absolute precision for the entire lifespan of the tire.\u003c\/p\u003e\n\u003cp\u003eFurthermore, standard tire manufacturing leaves behind silicone or petroleum-based mold release chemicals that actively repel tubeless sealant. SILCA treats the inner casing of the Protocol RCG-1 with a proprietary, \u003cstrong\u003elatex-friendly mold release agent\u003c\/strong\u003e that actively bonds with sealant—such as \u003ca href=\"\/products\/silca-ultimate-sealant-2-0\"\u003eSILCA Ultimate Tubeless Sealant 2.0\u003c\/a\u003e—for near-instant puncture sealing and airtight bead setup right out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003ctable class=\"tech-spec-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003cth\u003eModel\u003c\/th\u003e\n      \u003ctd\u003eSILCA Protocol RCG-1 Tubeless Gravel Tire\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003eIntended Use\u003c\/th\u003e\n      \u003ctd\u003eGravel Racing, Fast Off-Road, Mixed Surface \u0026amp; Hardpack\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003eTire Type\u003c\/th\u003e\n      \u003ctd\u003eTubeless Ready (TLR) \/ Hooked \u0026amp; Hookless Rim Compatible\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003eCasing Construction\u003c\/th\u003e\n      \u003ctd\u003e120 TPI Supple High-Volume Casing (Inverse Thickness Scaling)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003eBead Technology\u003c\/th\u003e\n      \u003ctd\u003eCarbon BeadLock™ (Zero-Stretch, Zero-Creep Carbon Fiber Bead)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003eTread Architecture\u003c\/th\u003e\n      \u003ctd\u003eVariable-Height Asymmetric Tread w\/ 40° Directional Cornering Lugs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003eCasing Treatment\u003c\/th\u003e\n      \u003ctd\u003eProprietary Latex-Friendly Bonding Mold Release Agent\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003eAvailable Sizes\u003c\/th\u003e\n      \u003ctd\u003e700 x 45mm (SKU: AM-AC-071-ASY-0100) \u0026amp; 700 x 50mm (SKU: AM-AC-071-ASY-0200)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003eRim Fit Standard\u003c\/th\u003e\n      \u003ctd\u003eOptimized for Modern Wide Rims (True-to-Size within 24h of inflation)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Setup Notes\u003c\/h3\u003e\n\u003cdetails style=\"margin: 12px 0; border: 1px solid #e2e8f0; border-radius: 8px; padding: 12px 16px; background: #ffffff;\"\u003e\n  \u003csummary style=\"font-weight: 700; color: #0f172a; cursor: pointer;\"\u003eWhat rims are the SILCA Protocol RCG-1 tires optimized for?\u003c\/summary\u003e\n  \u003cp style=\"margin: 10px 0 0 0; font-size: 13.5px; color: #475569; line-height: 1.5;\"\u003eThe Protocol RCG-1 is engineered specifically for modern wide gravel rims (23mm to 25mm+ internal rim width). Due to SILCA's precision casing tooling and Carbon BeadLock™, both the 45mm and 50mm variants measure true-to-spec within 24 hours of initial inflation.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin: 12px 0; border: 1px solid #e2e8f0; border-radius: 8px; padding: 12px 16px; background: #ffffff;\"\u003e\n  \u003csummary style=\"font-weight: 700; color: #0f172a; cursor: pointer;\"\u003eWhich tubeless sealant works best with these tires?\u003c\/summary\u003e\n  \u003cp style=\"margin: 10px 0 0 0; font-size: 13.5px; color: #475569; line-height: 1.5;\"\u003eBecause the inner casing is cured with a proprietary latex-compatible mold release agent, it pairs seamlessly with natural latex and carbon-fiber foaming formulas like \u003ca href=\"\/products\/silca-ultimate-sealant-2-0\"\u003eSILCA Ultimate Tubeless Sealant 2.0\u003c\/a\u003e, allowing rapid bead sealing without chemical barrier wash-off.\u003c\/p\u003e\n\u003c\/details\u003e\n","brand":"Silca","offers":[{"title":"700x45mm","offer_id":50850520105216,"sku":"AM-AC-071-ASY-0100","price":99.0,"currency_code":"USD","in_stock":false},{"title":"700x50mm","offer_id":50850520137984,"sku":"AM-AC-071-ASY-0200","price":99.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/8097\/9456\/files\/silca-protocol-rcg-1-tubeless-gravel-tire.webp?v=1793483505","url":"https:\/\/thresholdcycling.com\/products\/silca-protocol-rcg-1-tubeless-gravel-tire","provider":"Threshold Cycling","version":"1.0","type":"link"}