The R2 is an aerodynamic Smart Cycling Helmet designed for road cyclists. The R2 features a Bluetooth® Intercom communication system for rider-to-rider conversation, plus smartphone pairing for music, GPS, cues from fitness apps, and more. The R2’s impressive feature set is a nod to Sena’s original R1 smart helmet, but the R2 takes things to the next level with a new design and an integrated taillight.

Bluetooth 4.1

4-Way Intercom

Built-In Speakers & Mic

Intercom Range 900 m

LED Taillight

Advanced Noise Control™


The sleek helmet also features a built-in taillight, improving your visibility to others on the road. In addition to the convenient taillight, the R2 bike helmet is built to withstand an impact, providing necessary protection thanks to an in-mold polycarbonate shell. The helmet is lined with removable and washable inner padding, a smooth nylon chin strap, and a spin lock, all for superior protection and a secure fit.



Sena’s Bluetooth® Intercom technology allows for up to 4 riders to connect and chat from helmet to helmet at a range of just over a half mile (900 meters). When connecting with just one other rider, users will experience HD intercom quality. Audio is delivered through built-in speakers located just above the ears, which allows for awareness of surrounding sounds such as traffic, unlike in-ear buds. Located in the front of the helmet is a seamlessly integrated microphone that features Sena’s patented Advanced Noise Control™ technology, picking up and transmitting your voice more clearly.


Bluetooth 4.1

The benefits of Bluetooth 4.1 with the addition of Bluetooth Low Energy (BLE) for connecting to Sena’s smartphone apps.

4-Way Intercom

Connect up to 4 headsets together for a group intercom conversation.

Built-In Speakers & Mic

Integrated speakers and a microphone.

Intercom Range 900 m

Maximum distance operating within optimal conditions.

LED Taillight

Integrated rear light with four brightness settings and adaptive light that shines brighter when decelerating.

Advanced Noise Control™

Advanced Noise Control™ reduces the effects of ambient noise during intercom conversations.

Multi-Language Voice Prompts

Spoken audio cues from the headset across 11 languages.

Fitness App Compatible

Listen to audio feedback from smartphone fitness apps.

Aerodynamic Design

Streamlined, wind-resistant helmet design.

Quick Charging

Significant reduction in battery charge time.



    Weight: 394 g (M size)
    Operating Temperature: -10 °C – 55 °C (14 °F – 131 °F)
    Storage Temperature: 15 °C – 30 °C (59 °F – 86 °F)


    Size: S / M / L
    Color: Matte Black / Matte White / Matte Gray
    In-mold polycarbonate helmet shell with EPS liner
    Nylon Chinstrap


    Bluetooth 4.1
    Headset Profile (HSP)
    Hands-Free Profile (HFP)
    Advanced Audio Distribution Profile (A2DP)
    Audio Video Remote Control Profile (AVRCP)


    Working Distance: up to 900 m (0.6 mi) in open terrain
    Supports up to: 4 riders


    Talk Time: 11 – 18 hours (varies based on LED use)
    Charging Time: 2.5 hours
    Quick Charging: 20 minutes of charging equals 5 hours Intercom
    Charging Temperature: 0 °C – 40 °C (32 °F – 104 °F)
    Type: Lithium Polymer Battery


    Electronics: CE, FCC, IC
    Helmet: CE EN 1078, CPSC 1203
     *Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older


    Electronics: 2 years
    Helmet Integrity: 2 years


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