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Mirrors - Rizoma R21

YOUR THIRD EYE

€ 240.00
R

It’s not a mirror: it’s an invisible rear-view lens. Only 18 g, unbreakable ZEISS lens, magnetic mount.R21 lets you see behind without turning your head, keeping you in the flow.Designed...

It’s not a mirror: it’s an invisible rear-view lens. Only 18 g, unbreakable ZEISS lens,...

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It’s not a mirror: it’s an invisible rear-view lens. Only 18 g, unbreakable ZEISS lens, magnetic mount.
R21 lets you see behind without turning your head, keeping you in the flow.

Designed for those who want to stay aware without breaking rhythm.
The ZEISS lens provides a sharp, distortion-free view, and is unbreakable and scratch-resistant. Its aerodynamic profile has been wind tunnel tested.
The magnetic system ensures stable mounting and quick release with a single gesture.

Inside the handlebar sits the Adjustment Unit: an integrated sphere that allows smooth, precise adjustments for different riding positions and configurations.
This invisible base supports the Optical Unit, which houses the rear-view lens and completes the system in a compact, minimalist form.
R21 is for those who want an uncompromised edge.
Invisible tech, enhanced safety, continuous vision.
For those who never want to look back.

Read Less

  • Technical information

    R21 is a rear-view lens for road bicycles and is not subject to road approval.
    High-performance, R21 is designed for use on road bikes, both for amateur and professional riders. It is not suitable for off-road use.

    Made from solid CNC-machined aluminum, it weighs only 18 grams and has extremely compact dimensions, with a mounted side profile of just 36x34 mm.

    It features a convex, afocal optical lens with ZEISS technology, ultra-light, unbreakable, weather-resistant, and distortion-free, providing a clear, wide rear view even in motion.

    The mounting system is based on a quick, solid, fully mechanical magnetic connection, requiring no tools or power supply.
    The kit includes 3 adaptive grips, compatible with drop bar handlebars with internal diameters between 17.5 and 22 mm, to ensure maximum stability and compatibility. Always ensure the product is correctly installed before riding.

    R21 is compatible with the most common handlebar diameters.
    Each package includes a set of flexible rubber inserts, designed to provide a secure and vibration-free fit on any type of tubing.
    A handy conical tool included in the kit guides you in selecting the correct insert easily and quickly.
    Intuitive installation, absolute precision.

    Configurations and Product Codes
    Mirror + mounting kit color A: BS125A
    Mirror + mounting kit color B: BS125B
    Mounting kit color A (without mirror): BS125-15-KTA
    Mounting kit color B (without mirror): BS125-15-KTB
    Mirror without mounting kit A: BS125-10-KTA
    Mirror without mounting kit B: BS125-10-KTB

  • Mounting instructions & Approvals

    Mounting difficulty
    Assembly time 5-10 Min.
    Assembly instruction BS125

  • FAQ

    Homologation and certification

    R21 is a rear-view mirror designed for road bicycles and is not subject to road-use homologation.

    Is it necessary to purchase a separate mounting kit to install R21?

    No, the kit includes all the components required for proper installation.

    Can R21 be mounted on MTB bikes?

    No, the product is not suitable for off-road use. Moreover, installing the R21 on MTB handlebars, which are completely different from road bike handlebars, would not provide a proper rear view.

    Is R21 compatible with all road bike handlebars?

    The kit includes 3 adaptive grips, compatible with standard drop bar handlebars with an inner diameter between 17.5 and 22 mm. R21 is not suitable for MTB bikes.

    Is the R21 easy to install?

    Yes, installation takes only a few minutes. The adjustment unit fits directly into the handlebar end. The optical unit uses a quick, solid, and fully mechanical magnetic connection - no complex tools are required.

    Can R21 be used on both sides of the handlebar?

    Yes, R21 is reversible.

    Is R21 adjustable?

    Yes, the R21 allows for three-dimensional adjustment, ensuring an always optimal rear view based on your riding position.

    Does R21 move or vibrate while riding?

    Thanks to the three adaptive grips, proper installation ensures maximum stability. R21 is designed not to interfere with the cyclist’s performance on the road.

    R21 features a shatterproof lens, what is its function?

    The R21 lens, developed with ZEISS technology, is made from impact-resistant materials that prevent the formation of sharp fragments in the event of a crash or fall.

    R21 features a convex and afocal lens, what is its function?

    The R21 lens is convex and afocal, specifically shaped to ensure a wide, sharp, and distortion-free rear view, even while in motion.

    In case the lens is damaged, can it be replaced individually?

    Yes, it is possible to purchase a replacement lens for the R21 (the replacement includes one lens and a tool to help remove the damaged component).

CHOOSE YOUR BIKE

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TRUE DESIGN DISAPPEARS.

An object made to vanish, yet capable of changing everything.
R21 is designed to blend seamlessly into the handlebar: not as a lack, but as a natural extension of the bike.

It expresses Rizoma’s philosophy: function, aesthetics, and lightness in perfect balance.
Where technology steps back, only the essential remains.

R21

STAY FOCUSED

Rear vision is not just a matter of safety: it's a form of presence.
R21 provides constant awareness, effortless and distraction-free. It allows you to stay focused on the road, in the most aerodynamic position, maintaining control and fluidity at all times.

A simple glance. No unnecessary gestures. Every second counts.

R21

ZEISS OPTICAL TECHNOLOGY

At the core of R21 is its ZEISS convex lens, engineered to deliver a wide, sharp, distortion-free view.
Ultra-light, shatterproof, and weather-resistant, it stays clear even in motion, light, and shadow, across any terrain.

MECHANICAL RELIABILITY

R21 is built to perform in any condition.
No batteries, no electronics, no pairing: just pure mechanical precision.
A stable, accurate magnetic mount installs in seconds and stays put even on rough roads.

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