{"product_id":"silca-protocol-rcg-4-gravel-tyre","title":"Silca 700c Protocol RCG-4 Gravel Tyre","description":"\u003cp\u003eThe SILCA Protocol RCG-4 is a tubeless-ready gravel tyre for the rough end of gravel riding: sloppy mud, sand, loose rock and singletrack.\u003c\/p\u003e\n\u003cp\u003eIt has large, widely spaced knobs that shed mud, SealSkin puncture protection from bead to bead with an extra sidewall layer, and carbon fibre beads. It's compatible with hookless and hooked rims and comes in 45, 50 and 55mm widths.\u003c\/p\u003e\n\u003ch2\u003eTread built for mud and loose ground\u003c\/h2\u003e\n\u003cp\u003eThe RCG-4 uses fewer, larger and taller knobs, spaced wide apart. Open spacing lets mud and sand clear from the tread instead of packing in, so the knobs keep biting as conditions get worse. The taller knobs also put more rubber between the casing and sharp rocks.\u003c\/p\u003e\n\u003cp\u003eIt's SILCA's more aggressive gravel tyre: the \u003ca href=\"\/products\/silca-protocol-rcg-3-gravel-tyre\" target=\"_blank\" rel=\"noopener\"\u003eSILCA Protocol RCG-3\u003c\/a\u003e has a tighter tread pattern for faster, firmer gravel. Choose the RCG-4 if your riding includes mud, sand, steep and loose climbs, off-camber rock, singletrack or rough fire roads and four-wheel-drive tracks.\u003c\/p\u003e\n\u003ch2\u003eBead-to-bead puncture protection\u003c\/h2\u003e\n\u003cp\u003eSealSkin is SILCA's puncture-protection layer.\u003c\/p\u003e\n\u003cp\u003eOn the RCG-4 it runs from bead to bead, covering the sidewalls as well as the tread, with an added sidewall protection layer for severe conditions. Sidewall cuts from sharp rock are a common way to end a gravel ride, and they're much harder to seal than a tread puncture.\u003c\/p\u003e\n\u003ch2\u003eFast-rolling compound and race casing\u003c\/h2\u003e\n\u003cp\u003eThe RCG-4 uses SILCA's Pulsar compound, a lower-density rubber and silica race compound that balances rolling speed, grip and durability. The 120 TPI race casing is designed around modern, lower tyre pressures, where a supple casing lets the tyre conform to rough ground for more grip and comfort.\u003c\/p\u003e\n\u003ch2\u003eCarbonBead BeadLock\u003c\/h2\u003e\n\u003cp\u003eThe RCG-4 uses carbon fibre beads instead of Kevlar, which SILCA says keep the tyre's dimensions stable and the fit secure over its whole life.\u003c\/p\u003e\n\u003cp\u003eFit the tyre by hand: SILCA says never to use a tyre lever to install it, because levers can damage the carbon bead. After fitting, check that the bead line sits evenly above the rim edge all the way round.\u003c\/p\u003e\n\u003cp\u003eIf the tyre wobbles, reseat it. Levers are fine for removal: let all the air out, push both beads into the centre channel of the rim, then lever the bead off with non-metal levers such as \u003ca href=\"\/products\/muc-off-rim-stix-tyre-levers-2-pack\" target=\"_blank\" rel=\"noopener\"\u003eMuc-Off Rim Stix\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eChoosing a width\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"min-width: 480px; word-break: normal; overflow-wrap: normal;\"\u003e\n\u003ccaption\u003eSILCA Protocol RCG-4 sizes\u003c\/caption\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSize\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eWeight\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eMinimum sealant\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e700 x 45mm\u003c\/th\u003e\n\u003ctd\u003e545g\u003c\/td\u003e\n\u003ctd\u003e90ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e700 x 50mm\u003c\/th\u003e\n\u003ctd\u003e620g\u003c\/td\u003e\n\u003ctd\u003e100ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e700 x 55mm\u003c\/th\u003e\n\u003ctd\u003e650g\u003c\/td\u003e\n\u003ctd\u003e115ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWidths are measured on a 25mm internal-width rim after 24 hours inflated.\u003c\/p\u003e\n\u003cp\u003eAs a rule of thumb, every 2mm change in rim width changes the tyre's measured width by about 1mm. Check your frame and fork clearance before choosing a width, and confirm compatibility with your rim manufacturer.\u003c\/p\u003e\n\u003ch2\u003eTubeless setup and sealant\u003c\/h2\u003e\n\u003cp\u003eThe RCG-4 is tubeless ready. The minimum sealant amounts in the table are for \u003ca href=\"\/products\/silca-ultimate-tubeless-sealant-65ml\" target=\"_blank\" rel=\"noopener\"\u003eSILCA Ultimate Tubeless Sealant\u003c\/a\u003e, so a 45mm tyre needs at least 90ml, more than one 65ml bottle.\u003c\/p\u003e\n\u003cp\u003eSILCA says more may help, depending on your climate, conditions, tyre inserts and how often you top up. Browse our \u003ca href=\"\/collections\/tubeless-sealant\" target=\"_blank\" rel=\"noopener\"\u003etubeless sealant\u003c\/a\u003e range. You can also run it with inner tubes.\u003c\/p\u003e\n\u003ch2\u003eHow long does it last?\u003c\/h2\u003e\n\u003cp\u003eSILCA expects around 1,600 to 2,400km of life for a typical rider, depending on how and where you ride.\u003c\/p\u003e\n\u003cp\u003eFor road riding on rough surfaces and chip seal, see SILCA's \u003ca href=\"\/products\/silca-protocol-rcr-road-tyre\" target=\"_blank\" rel=\"noopener\"\u003eProtocol RCR road tyre\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the SILCA Protocol RCG-4 best for?\u003c\/h3\u003e\n\u003cp\u003eRough and loose gravel: mud, sand, loose rock, singletrack and off-camber terrain.\u003c\/p\u003e\n\u003ch3\u003eIs the SILCA Protocol RCG-4 tubeless?\u003c\/h3\u003e\n\u003cp\u003eYes. It's tubeless ready and can also be used with inner tubes.\u003c\/p\u003e\n\u003ch3\u003eWhat widths does the RCG-4 come in?\u003c\/h3\u003e\n\u003cp\u003e700 x 45mm (545g), 700 x 50mm (620g) and 700 x 55mm (650g).\u003c\/p\u003e\n\u003ch3\u003eDoes the RCG-4 have sidewall protection?\u003c\/h3\u003e\n\u003cp\u003eYes. SealSkin puncture protection runs from bead to bead, with an extra sidewall protection layer.\u003c\/p\u003e\n\u003ch3\u003eCan I use the RCG-4 on hookless rims?\u003c\/h3\u003e\n\u003cp\u003eYes. It's compatible with both hookless and hooked rims. Confirm compatibility with your rim manufacturer.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the RCG-4 and RCG-3?\u003c\/h3\u003e\n\u003cp\u003eThe RCG-4 has fewer, larger, more widely spaced knobs for mud, sand and loose rock. The RCG-3 has a tighter tread for faster riding on firmer gravel.\u003c\/p\u003e\n\u003ch3\u003eHow much sealant does the RCG-4 need?\u003c\/h3\u003e\n\u003cp\u003eAt least 90ml for the 45mm, 100ml for the 50mm and 115ml for the 55mm.\u003c\/p\u003e\n\u003ch3\u003eCan I use tyre levers with the RCG-4?\u003c\/h3\u003e\n\u003cp\u003eOnly to remove it. SILCA says never to use a lever to install the tyre, because it can damage the carbon bead. Fit it by hand.\u003c\/p\u003e\n\u003ch3\u003eHow many kilometres does the RCG-4 last?\u003c\/h3\u003e\n\u003cp\u003eSILCA expects around 1,600 to 2,400km for a typical rider.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ccaption\u003eSILCA Protocol RCG-4 specifications\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUse\u003c\/th\u003e\n\u003ctd\u003eGravel: mud, sand, loose rock, singletrack\u003c\/td\u003e\n\u003c\/tr\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\"\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\"\u003eTread\u003c\/th\u003e\n\u003ctd\u003eLarge, tall, widely spaced knobs for mud shedding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCasing\u003c\/th\u003e\n\u003ctd\u003e120 TPI race casing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCompound\u003c\/th\u003e\n\u003ctd\u003ePulsar race compound (rubber and silica)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProtection\u003c\/th\u003e\n\u003ctd\u003eSealSkin bead to bead, plus sidewall protection layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBead\u003c\/th\u003e\n\u003ctd\u003eCarbonBead BeadLock, carbon fibre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTubeless\u003c\/th\u003e\n\u003ctd\u003eTubeless ready; can be used with tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRim compatibility\u003c\/th\u003e\n\u003ctd\u003eHookless and hooked, ETRTO; widths measured on 25mm internal-width rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMinimum sealant\u003c\/th\u003e\n\u003ctd\u003e90ml (45mm), 100ml (50mm), 115ml (55mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Silca","offers":[{"title":"50mm","offer_id":67851901829429,"sku":"810093163359","price":159.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/3468\/6261\/files\/SI163342_2.jpg?v=1792393959","url":"https:\/\/ivanhoecycles.com.au\/products\/silca-protocol-rcg-4-gravel-tyre","provider":"Ivanhoe Cycles","version":"1.0","type":"link"}