e*thirteen Helix R Direct Mount Chainrings, manufactured from durable AL-7075-T6, combine aesthetics and design efficiency. Their flip-flop design accommodates Boost or Super Boost chainlines. With e*thirteen's narrow-wide tooth profile, they ensure enhanced chain retention, reduced wear, and compatibility with Shimano and SRAM chains. Perfectly complementing all Helix Cranks, they're backward compatible with e*thirteen TRS, LG1, and XCX Race cranks.
Direct Mount design for use with Helix cranks, adjustable chainline TRS/LG1 cranks, and XCX Race cranks
M4 narrow-wide tooth profile provides Shimano and SRAM 11/12-speed chain compatibility, excellent chain retention, and reduced wear
Convenient flip-flop design, compatible with both Boost and SuperBoost chainlines (52/55mm)
e*thirteen's Quick Connect direct mount interface keeps the system secure and creak-free
Forged from premium 7075-T7 aluminum, then extensively CNC optimized for light weight, and technical aesthetics
Durable 7075-T6 construction for long wear-life, stiffness, and strength
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I've had a Prevail-2 for a number of years and liked it because it is cool and light. Un fortunately. I had a sliding crash a few weeks ago which cracked my helmet ( but not my head!) So I needed to replace it. Since I liked the Prevail 2, I figured the Prevail-3 was the logical choice. I found this helmet on sale in my preferred red at a great price and ordered it. Order was executed smoothly and helmet showed up about a week later. Very happy with it
The S-Works Prevail 3 is one of the most comfortable bike helmets I’ve worn. The fit system adjusts perfectly, and once I ratchet the MIPS cradle to my head, the helmet almost disappears — it conforms so well that I barely notice I’m wearing it.
Ventilation is excellent. Riding in moderate weather around the mid-70s, my head stayed cool and comfortable without overheating. The airflow design really works.
Thankfully, I haven’t had to test the helmet in a crash, and I hope I never do. But the build quality and design give me a lot of confidence in the protection it offers. Highly recommended.
S-Works Prevail 3
JDLPHL
Amazing frameset - shipped fast - great pricing
Very impressed by the whole experience with Sierra Bicycle Supply! The frameset was just as shown - brand new and gorgeous. It shipped fast with tracking info. Great pricing on the frameset and I picked up other stuff for my build. Great overall experience - highly recommended!!
Tarmac SL8 Frameset
James Welch
Sick bike!
Amazing bike at super price. Free shipping. Highly recommend buying from these guys.
P.3
Edb2026
Really is a Bike Computer / display brighter than s25 Ultra
Here is how I am using it.
- Customizable displays for ...
- Heart Rate Sensor
- Garmin Pedal Power Meters
- Lights control
- Cadence Sensor
- Speed Sensor
- DOES NOT WORK WITH SAMSUNG WATCH 8 CLASSIC
- Records Route Creation but need to be careful with saving rides as not doing two rides back to back = lost
- does not come with a one hundred twenty page manual.But I was able to find a pdf file online
