Silca Protocol Rcr Road Tyre 700C

ENGINEERED FOR MODERN ROAD RACING, THE SILCA PROTOCOL RCR COMBINES RACE-LEVEL ROLLING SPEED WITH HIGH-VOLUME COMFORT, CONFIDENT HANDLING AND A SUPPLE 120 TPI RACE CASING FOR FAST PERFORMANCE ACROSS SMOOTH TARMAC, ROUGH ROADS AND MIXED-SURFACE CONDITIONS.

The SILCA Protocol RCR challenges the traditional idea that wider road tyres need to be heavier, slower or designed primarily for endurance riding.
Instead, SILCA has taken a volume-centric approach, engineering the RCR in 29 mm, 34 mm and 38 mm widths with the same focus on speed, weight and ride quality expected from a dedicated racing tyre.
Greater air volume allows the RCR to operate effectively at lower pressures, helping absorb road imperfections, maintain contact with the surface and reduce impact-related flat risk. By using that additional air volume as part of the tyre's performance system, SILCA has created a wider road tyre that remains lightweight, supple and exceptionally fast.


KEY FEATURES

Race Speed In Wider Sizes
The Protocol RCR is designed from the outset as a high-performance road racing tyre across all three widths, delivering the advantages of increased tyre volume without the heavy construction traditionally associated with wider road tyres.

High-Volume Performance
Greater air volume allows lower operating pressures, improving compliance and helping the tyre maintain speed across rough and imperfect road surfaces.

Pulsar Compound
SILCA's high-performance rubber and silica compound is engineered to deliver extremely low rolling resistance while maintaining confident grip and durability.

120 TPI Race Casing
A supple 120 TPI casing provides responsive road feel while being specifically engineered around the lower pressures used with modern wider road tyres and rims.

SealSkin Tread Protection
Targeted protection beneath the tread increases resistance to punctures while avoiding unnecessary casing weight and stiffness.

CarbonBead BeadLock
Carbon fibre bead technology provides dimensional stability throughout the tyre's service life, helping maintain consistent tyre dimensions and secure fitment.

Tubeless Ready
Designed for modern road tubeless systems, allowing riders to take advantage of optimised pressures for improved comfort, traction and real-world rolling performance.


TECHNOLOGY

Pulsar Compound
SILCA's high-performance rubber and silica race compound is engineered to balance rolling efficiency, grip and durability. In the Protocol RCR, the compound is focused on delivering the low rolling resistance and confident handling demanded by fast road riding and racing.

Race Casing
Rather than simply adapting traditional high-pressure road tyre construction to wider sizes, SILCA developed its Race Casing around the lower operating pressures used with modern wider rims.
This allows the tyre to maintain its intended shape and responsive ride characteristics while retaining the supple casing behaviour required for low rolling resistance and road feel.

Volume-Centric RCR Architecture
The Protocol RCR uses increased tyre volume as a performance advantage.
Greater air volume helps the tyre absorb road imperfections and maintain contact with the surface while allowing lower operating pressures. This can reduce vibration and energy loss across rough roads while increasing comfort and control.
The result is a wider road tyre engineered specifically for speed rather than simply adding width to a conventional endurance tyre construction.

SealSkin Tread Protection
SealSkin provides targeted puncture protection beneath the tread, adding durability where it is most needed while maintaining the supple casing characteristics essential to low rolling resistance and responsive handling.

CarbonBead BeadLock
Carbon fibre bead technology provides excellent dimensional stability, helping the tyre maintain its intended dimensions throughout its service life.

Modern Rim Optimisation
Protocol tyre dimensions are referenced against a modern 25 mm internal-width rim rather than the significantly narrower rims traditionally used to determine road tyre sizing.
Because rim width influences the final installed width of a tyre, this provides an important reference point when choosing between the RCR's 29 mm, 34 mm and 38 mm options.

Tubeless Ready Construction
Engineered for modern tubeless systems, allowing the tyre, rim, sealant and operating pressure to function together as a complete performance system.


TYRE WIDTH & RIM COMPATIBILITY

SILCA states Protocol tyre widths based on installation on a hooked rim with a 25 mm internal width, inflated to the maximum pressure indicated on the tyre sidewall and measured after 24 hours.
Actual fitted tyre width can change depending on the internal width of your rim.
As a general rule, for every 2 mm change in rim internal width, expect approximately a 1 mm change in measured tyre width.
For example, a Protocol RCR labelled as 34 mm and measuring approximately 34 mm on SILCA's 25 mm reference rim could be expected to measure approximately:
21 mm Internal Rim: 32 mm
23 mm Internal Rim: 33 mm
25 mm Internal Rim: 34 mm
27 mm Internal Rim: 35 mm
29 mm Internal Rim: 36 mm
This is particularly important when selecting the widest RCR your bicycle can accommodate. A tyre fitted to a wider rim may measure wider than its stated size, so adequate frame and fork clearance should always be considered before choosing a tyre.
Actual measurements can vary slightly due to casing deformation, rim design and manufacturing tolerances. Hookless, micro-hook and mini-hook rims may also produce different measurements. Always confirm that your chosen tyre and rim combination is approved by the tyre, wheel and bicycle manufacturers.

WHY TO CHOOSE

Choose the SILCA Protocol RCR if you want the speed and responsive feel of a genuine race tyre combined with the comfort, control and real-world efficiency available from a modern high-volume road setup.
Rather than assuming that narrower tyres and higher pressures are automatically faster, the RCR uses additional air volume and optimised pressures to help maintain momentum across imperfect surfaces.
This can be particularly valuable on coarse chip seal, broken tarmac and rough Australian roads, where vibration and repeated impacts can compromise both speed and rider comfort.
The three available widths also allow you to tailor the RCR to your bike, road conditions and riding style. The 29 mm option provides a modern race-focused setup, while the 34 mm and 38 mm versions increase air volume, comfort and rough-road capability without abandoning the RCR's performance-focused design.
For modern race and performance road bikes with generous tyre clearance, the RCR offers an exciting alternative to traditional narrow racing tyres.


PERFECT FOR

Road racing, criteriums, endurance road riding, fast training, gran fondos, rough tarmac, chip seal and mixed-surface road courses.
An excellent choice for Australian road riders looking for race-level speed with the comfort and control of a modern high-volume tubeless setup, particularly across coarse chip seal and variable road surfaces.


FULL SPECIFICATIONS

Brand: SILCA
Model: Protocol RCR
Type: Performance road racing tyre
Wheel Size: 700C
Available Widths: 29 mm, 34 mm, 38 mm
ETRTO: 29-622, 34-622, 38-622
Compound: Pulsar Compound
Casing: Race Casing
Casing Density: 120 TPI
Puncture Protection: SealSkin Tread Protection
Bead Technology: CarbonBead BeadLock
Tubeless Ready: Yes
29 mm Weight: Approximately 290 g
34 mm Weight: Approximately 320 g
38 mm Weight: Approximately 350 g
SILCA Reference Rim: Hooked rim with 25 mm internal width
Stated Tyre Width: Based on installation on SILCA's 25 mm internal-width reference rim, inflated to maximum sidewall pressure and measured after 24 hours
Rim Width Guide: Approximately 1 mm change in measured tyre width for every 2 mm change in rim internal width
Actual Width: May vary according to rim design, internal width and tyre/rim combination
Recommended Minimum Sealant - 29 mm: 55 ml
Recommended Minimum Sealant - 34 mm: 65 ml
Recommended Minimum Sealant - 38 mm: 80 ml
Intended Use: Road racing, fast road riding, rough pavement and mixed-surface road conditions