Silca Protocol RCG-1 Gravel Tyre 700C

ENGINEERED FOR OUTRIGHT SPEED ON FAST GRAVEL, HARDPACK AND MIXED SURFACES, THE SILCA PROTOCOL RCG-1 COMBINES AN ULTRA-FAST DIRECTIONAL CENTRE TREAD WITH HIGH-VOLUME COMPLIANCE, CONFIDENT CORNERING GRIP AND A LIGHTWEIGHT 120 TPI RACE CASING.

Designed around modern high-volume gravel tyre sizes, the Protocol RCG-1 brings together the low rolling resistance of a fast hardpack tyre with the comfort and control of a high-volume XC race tyre.

Its low, ramped centre tread is designed to minimise rolling resistance when riding straight, while defined braking edges provide additional bite when slowing. As the bike leans into a corner, elevated and elongated shoulder knobs engage with the surface to increase grip and stability.

The result is a tyre built for riders who prioritise speed but still need predictable control when fast gravel becomes loose or technical.


KEY FEATURES

Fast-Rolling Directional Tread
A low-profile, ramped centre tread is designed to reduce rolling resistance and maintain speed across hardpack gravel and sealed-road sections.

Confident Cornering Grip
Elevated, elongated shoulder knobs increase the tyre's contact with the ground as the bike leans, providing additional grip and stability through loose-over-hard corners.

High-Volume Performance
Available in 45 mm, 50 mm and 55 mm widths, the RCG-1 uses increased tyre volume to improve compliance, comfort and control without compromising its race-focused character.

120 TPI Race Casing
The lightweight 120 TPI casing delivers a supple ride feel and is engineered around the lower pressures commonly used with modern wide gravel rims.

Tubeless Ready
Designed specifically for modern tubeless systems, allowing riders to take advantage of lower tyre pressures for improved comfort, traction and control.


TECHNOLOGY

Pulsar Compound
SILCA's high-performance rubber and silica race compound is engineered to balance low rolling resistance, grip and durability. Rather than maximising one characteristic at the expense of the others, Pulsar is designed to deliver efficient race performance across changing surfaces.

Race Casing
A lightweight casing architecture developed specifically around modern tyre volumes and pressures. It is designed to maintain tyre shape and ride quality at the lower pressures commonly used with wider gravel tyres and rims.

GhostShield Protection
SILCA's proprietary 120 TPI casing construction provides lightweight puncture protection without relying on additional heavy breaker layers, helping maintain the RCG-1's low rolling resistance and supple ride quality.

CarbonBead BeadLock
Carbon fibre bead technology provides dimensional stability throughout the tyre's service life. Unlike conventional bead materials that can gradually stretch, CarbonBead BeadLock is designed to help the tyre maintain its intended dimensions.

Tubeless Ready Construction
Engineered from the bead upwards for use with modern tubeless systems, allowing tyre, rim, sealant and lower operating pressures to work together as a complete system.


WHY TO CHOOSE

Choose the SILCA Protocol RCG-1 when speed is the priority.
Rather than using an aggressive tread across the entire tyre, the RCG-1 concentrates on efficiency through the centre while retaining substantial shoulder grip when required. This makes it particularly effective for fast gravel riding where surfaces regularly alternate between smooth hardpack, loose-over-hard gravel and tarmac.
Its combination of low rolling resistance, lightweight construction and large-volume casing also makes it an excellent option for competitive riders looking to maximise efficiency without sacrificing the confidence needed to push through high-speed corners.


PERFECT FOR

Gravel racing, fast hardpack gravel, dry gravel roads, loose-over-hard conditions and mixed tarmac and gravel routes. An ideal choice for Australian gravel riders looking for a fast, high-volume tubeless tyre that combines race-focused efficiency with confident cornering performance.


FULL SPECIFICATIONS

Brand: SILCA
Model: Protocol RCG-1
Type: Performance gravel tyre
Wheel Size: 700C
Available Widths: 45 mm, 50 mm, 55 mm
ETRTO: 45-622, 50-622, 55-622
Compound: Pulsar Compound
Casing: Race Casing
Casing Density: 120 TPI
Puncture Protection: GhostShield
Bead Technology: CarbonBead BeadLock
Tread: Low-ramped directional centre tread with elevated shoulder knobs
Tubeless Ready: Yes
45 mm Weight: Approximately 460 g
50 mm Weight: Approximately 510 g
55 mm Weight: Approximately 535 g
Measured Rim Internal Width: 25 mm
Recommended Minimum Sealant - 45 mm: 90 ml
Recommended Minimum Sealant - 50 mm: 100 ml
Recommended Minimum Sealant - 55 mm: 100 ml
Primary Conditions: Fast hardpack, dry gravel, loose-over-hard and mixed surfaces