stem

These cold-forged, machined alloy mountain stems pair with M-Series composite handlebars to reduce damage risk to carbon.

The integrated bar-stem combo and seatpost can help save weight, and also reduce road vibrations, adding comfort, but not mass.

New patent application shows an array of interlinked components, such as suspension settings electronically set by stem height for climbing or descending.

Zipp's Service Course Silver components dress up your bike with a unique visual that breaks free from the blackout trend.

Ever wondered how to make sure your stem and front wheel are aligned? Follow these tips

29er bike bags, the history of 650b and all-carbon DH

Easton says they've developed the "strongest bar and stem combination ever" with their new Havoc line

Also: draining water from rims

Singletrack.com's Lennard Zinn talks about the fine details of a 4-bolt stem with titanium bolts.

While most bars and stems go with the oversized 31.8 clamps, Rotor is aiming at fans of Euro-style, 25.4 ultralight bars and stems.

The stems in question — from 2007, 2008 and 2009 — can crack and eventually break during use.

Can stem height affect high-speed shimmy?

Can you recommend a tall stem for a tall rider?

Are longer cranks 'harder to push'?

Dear Lennard,
I'm interested in buying the Deda Zero 100 stem you recently reviewed. However I noticed that the clamp size is listed as 31.7mm. The bar I wanted to use is the FSA K-Wing Carbon which has a clamp size listed as 31.8mm. Will the 0.1mm difference in size make this combination incompatible?
Steve Dear Steve,

Two of Lennard's favorite new products.

Features: The Koski Stronghold Deluxe is a forged hollow stemof 6061-T6 aluminum with a four-bolt polished silver front plate. The shaftis matte black.The Stronghold Deluxe stem is available in two finishes, called “shotpeened black” and “polished silver,” two angles, namely 7 and 15 degrees,and five lengths: 60, 75, 95, 110 and 130mm.All of the bolts take a 5mm hex key.Likes: This is a handsome and lightweight stem available in lotsof finishes, angles and lengths. It is plenty stiff, and it has a largeclamping area with the bar (these two features are probably interrelated).Dislikes:

Features: The Mag00 is a superlight magnesium stem for an oversized31.7mm handlebar diameter. It is machined from AZ 80 A, T5 temper magnesium,under a controlled inert-gas atmosphere and immediately coated afterwardsto prevent the oxidation and consequent weakening of the magnesium.The four-bolt front cap is made of carbon fiber with, according to Deda,the fibers oriented along the lines of force. All bolts are 6/4 titaniumfor a 4mm hex key.The Mag 00 comes in an 80-degree angle with lengths of 90, 100, 110,120, 130 and 140mm.Likes: The stem is extremely light while being adequately stiff.I

Features: The matte-black Deda Newton is machined from 2024 T6aluminum. The silver front cap is held on with four titanium bolts, which,like the fork-steerer clamp, accept a 4mm hex key.The Newton comes in 90- and 95-degree angles in lengths of 105, 115and 125mm. The Deda N’Bar matches it in graphics and quality.Likes: Like the Newton road stem, this is a strong, superlightstem, and I find it to be adequately stiff.Dislikes: Not a one.Other: You have to very careful not to over-torque the smallbolts.The Deda single-bend bars, namely the N’Bar and BarOne, come only inthe relatively short 560mm

VeloNews technical writer Lennard Zinn is a frame builder,a former U.S. national team rider and author of several books on bikesand bike maintenance. This is the second of Zinn's weekly VeloNews.comcolumns devoted to addressing readers' technical questions about bikes,their care and feeding and how we as riders can use them as comfortablyand efficiently as possible. Readers can send brief technical questionsdirectly to Zinn. We'll try to printa representative sample of questions each Thursday. First, some follow-up from last week Lastweek there were a couple of questions that encouraged an