{"product_id":"silca-protocol-rcg-4-gravel-tire","title":"SILCA Protocol RCG-4 Gravel Tire","description":"\u003cp\u003eThe SILCA Protocol RCG-4 is the ultimate off-grid gravel tire, built for the days when the course gets sloppy and the terrain stops being predictable. Just because conditions are rough does not mean you stop wanting to go fast, and the RCG-4 is designed around exactly that idea. Aggressive, widely spaced lugs shed sticky loam and mud before they can pack and clog, so you keep traction and momentum where a lesser tire would bog down. Full bead-to-bead SealSkin protection wraps the entire casing, giving you the confidence to take on singletrack, OHV roads, and off-camber loose rock without worrying about a sidewall tear ending your day.\u003c\/p\u003e\n\u003cp\u003eThe tread uses fewer but significantly larger knobs than the RCG-3. That intentional spacing is the key to mud performance: where tight-knob tires pack up and lose bite, the RCG-4 actively flings mud away to keep the contact patch clean. The Pulsar compound brings the same grip and efficiency balance found across the Protocol line, so speed does not get traded away just because the terrain is demanding.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/iWI6G5oydY0?si=GjhyiYT2_1xV9z9f\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e________\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePulsar Compound: high-performance rubber and silica race compound balancing rolling efficiency, grip, and durability\u003c\/li\u003e\n\u003cli\u003eRace Casing: developed around modern tyre pressures to hold shape and ride quality at the pressures wide rims actually run\u003c\/li\u003e\n\u003cli\u003eSealSkin Bead-to-Bead Protection: full sidewall and casing coverage for maximum flat and tear resistance on harsh terrain\u003c\/li\u003e\n\u003cli\u003eCarbonBead BeadLock: carbon fibre bead for dimensional stability across the tyre's whole life\u003c\/li\u003e\n\u003cli\u003eAggressive, widely spaced knob profile: fewer but larger lugs prevent mud packing and actively shed sticky loam for uninterrupted momentum\u003c\/li\u003e\n\u003cli\u003eWider, taller knobs put more rubber between the casing and rocks for added sidewall protection\u003c\/li\u003e\n\u003cli\u003eTubeless Ready: engineered for modern tubeless systems from the bead out\u003c\/li\u003e\n\u003cli\u003eDesigned for mud, sand, loose rock, singletrack, OHV roads, and off-camber terrain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e________\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable id=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSIZES\u003c\/th\u003e\n\u003ctd\u003e700 x 45mm, 700 x 50mm, 700 x 55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eETRTO\u003c\/th\u003e\n\u003ctd\u003e45-622 (45mm), 50-622 (50mm), 55-622 (55mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTPI\u003c\/th\u003e\n\u003ctd\u003e120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWEIGHT\u003c\/th\u003e\n\u003ctd\u003e545g (45mm), 620g (50mm), 650g (55mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCOMPOUND\u003c\/th\u003e\n\u003ctd\u003ePulsar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCASING\u003c\/th\u003e\n\u003ctd\u003eRace Casing with SealSkin Bead-to-Bead Protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBEAD\u003c\/th\u003e\n\u003ctd\u003eCarbonBead BeadLock (Foldable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTUBELESS READY\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWIDTH MEASURED ON\u003c\/th\u003e\n\u003ctd\u003e25mm rim after 24 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMIN SEALANT FILL\u003c\/th\u003e\n\u003ctd\u003e90ml (45mm), 100ml (50mm and 55mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRECOMMENDED USE\u003c\/th\u003e\n\u003ctd\u003eMud, Sand, Loose Rock, Mixed Trail Terrain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e________\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eOur thoughts:\u003c\/strong\u003e\u003cbr\u003eThe RCG-4 is a different beast from the RCG-1 and RCG-3. It is not a race tire in the traditional gravel sense; it is the tire you reach for when the course or conditions are genuinely hostile. The mud-shedding performance is real: the wide knob spacing works as advertised. The bead-to-bead SealSkin makes it the most protected tyre in the Protocol range, which matters when you are crossing terrain where sidewall cuts are a real risk. If your gravel adventures regularly cross into singletrack, technical terrain, or genuinely wet and muddy conditions, the RCG-4 is the right tool for the job.\u003c\/p\u003e","brand":"SILCA","offers":[{"title":"700 x 45mm","offer_id":50726341148915,"sku":"SILCA-AM-AC-073-ASY-0100","price":149.95,"currency_code":"CAD","in_stock":true},{"title":"700 x 50mm","offer_id":50726341181683,"sku":"SILCA-AM-AC-073-ASY-0200","price":149.95,"currency_code":"CAD","in_stock":true},{"title":"700 x 55mm","offer_id":50726341214451,"sku":"SILCA-AM-AC-073-ASY-0300","price":149.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0400\/3207\/5934\/files\/Silca_Protocol_RGC-4_Gravel.jpg?v=1788232365","url":"https:\/\/bikecomponents.ca\/products\/silca-protocol-rcg-4-gravel-tire","provider":"Bikecomponents.ca","version":"1.0","type":"link"}