Silca Protocol RCG-1 700c Tire Speed Is the Only Objective The Protocol RCG-1 sits at the fast end of the gravel spectrum: a directional tread built for hardpack, pavement transitions, and high-speed race conditions where tempo and traction have to coexist. The center runs a low, ramped directional pattern that rolls efficiently and bites hard under braking, while the elevated, elongated side knobs engage at lean to maximize grip through loose, sweeping corners. The carbon fiber bead keeps the tire dimensionally stable over its life, a meaningful advantage on hookless rims where bead stretch creates real blowoff risk. If you're lining up at Gravel Worlds, SBT GRVL, or any fast Cat 1 or 2 event, this is the tire to start with. Features Pulsar Compound proprietary rubber and silica race compound that holds rolling efficiency, grip, and durability in balance rather than trading one for another Ghost Shield Protection (120 TPI Race Casing) proprietary ply-angle casing delivers puncture protection at high volume without breaker layers, tuned for the pressures wide rims actually run Carbon Bead Lock bead rigid carbon fiber bead that does not stretch or creep over time, keeping the tire dimensionally stable and reducing blowoff risk on hookless rims Ramped directional center tread low-profile knobs roll fast on hardpack and pavement transitions, with a braking surface that bites when slowing down Elevated, elongated side knobs engage at lean to maximize contact patch for grip and stability in loose, high-speed corners Tubeless-ready, hookless-compatible designed for modern wide-rim systems from the bead out Specifications Size700c Width(s)45mm, 50mm, 55mm Compound Pulsar Compound Casing Ghost Shield Protection Race Casing TPI120Bead Carbon Bead Lock (folding carbon fiber, tubeless)Tubeless Compatible Yes Hookless Compatible Yes Weight460g (45mm), 510g (50mm), 535g (55mm)Intended Use Gravel | Silca | Protocol Rcg-1 700C Tire 700X45, Race Casing | Rubber