Published:
Our 50mm sample weighed in at just 111g which is spot on for this kind of money. We like the neat CNC finish, the small five-degree rise and the fact that there’s a choice of faceplate colours, making it easy to coordinate it with the rest of your steed. The large cutaways at the faceplate make it easy to see the bar alignment marks, which is handy.
The shallow steerer clamping area means that the Zephir isn’t the stiffest stem on test, no matter what it is you’re riding. There’s noticeable give when you pull on the bars, which isn’t ideal.
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Product Specifications
Product
| Name | Name, 0, 10, Name, Zephir CNC stem (11) |
| Brand | Brand, 0, 20, Brand, Superstar Components |
| Weight (g) | Weight (g), 2, 0, Weight (g), 111 |
| Available Colours | Available Colours, 2, 0, Available Colours, Various |
| Clamp/Bar Size | Clamp/Bar Size, 2, 0, Clamp/Bar Size, 31.8 |
| Stem Length/Reach Options | Stem Length/Reach Options, 2, 0, Stem Length/Reach Options, 110mm 50mm 70mm 90mm |
| Angle | Angle, 2, 0, Angle, 5 |
Authors
Rob Weaver is BikeRadar's technical editor-in-chief. Rob manages all of the testing here at BikeRadar and across our magazines, Mountain Biking UK and Cycling Plus. Rob first graced the pages of MBUK back in 2001 when working as a freelance writer and went on to start testing bikes for the title in 2007. In 2010 he joined the team full-time and has been keeping a close eye on all things test-related ever since. Rob’s expansive knowledge of bikes comes courtesy of his passion for racing. He cut his teeth racing cross-country mountain bikes in the early 90s before finding his feet in downhill. After many years competing on the UK national circuit (including a year attempting to race UCI DH World Cups), Rob realised his know-how and passion for bike setup, tech and writing clearly outweighed his racing ability. A degree in sports technology and decades of riding experience all help to give Rob a thorough understanding of what’s needed to create a great bike or product. While Rob’s a mountain biker at heart and never happier than when he’s sliding down a Welsh hillside, he’s more than happy to put the miles in on the road or gravel bike, too.
