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Renthal Duo Stem

Item #: ST243H00
USD$79.99 SAVE 20% USD$100.00 msrp
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Renthal Duo Stem

Renthal Duo Stem

The Renthal Duo stem reaches bicycling nirvana by being both light weight and very strong. You will notice that the Renthal Duo is horizontally divided and that allows Renthal to machine away material without compromising strength. Renthal uses CNC machined 6082 T6 aluminum and incorporates a U-shaped cradle clamp to eliminate handlebar stress risers that can be found with traditional stems. This yields a package that weighs 143 grams (including bolts) and will stand up to the punishment your riding will dish out.

  • 50mm
  • 10 degree rise
  • 143g
  • 31.8mm handlebar clamp
4.1 / 5.0
9 Reviews
5 Stars
4 Stars
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Looks Good, Nice Concept.. but flawed.
I am a 45 year old who rides 3 - 4 times a week... aggressive trail riding would be a fair descriptor of how I ride.

FWIW, I'm also an engineer, so I can be a little over analytic of my mtb gear.

I purchased this stem because it seemed to offer the combination of weight and spec I was looking for, the unique design and looks were a bonus. I was also aware that this product had a mixed reputation, mostly due to creaking, supposedly when the stem is not installed 'properly'.

I decided to take a chance and unfortunately discovered that the creaking was in fact a problem with mine as well, not due to assembly, torque, grease etc... but because of the design. Even after assembling according to Renthal's instructions several times.. cleaning, greasing torquing to spec in the proper sequence, etc... IT JUST CREAKS.

The creaking occurs under side to side type of loading (like on a climb/sprint when your weight shifts between the left and right grips repeatedly).

The creak is a product of the 2 halves of the stem slipping against one another under the twisting force described above.

Without getting too technical about this... due to manufacturing tolerances, the fact is some units may not creak/shift perceptibly, but many will... its kind of a roll of the dice whether you'll get a 'creaker'.

Renthal really need to have a mechanical feature to lock/align the 2 halves together once assembled.

For 100 bucks, there are better options.

PROS: Lightweight, Attractive Design

CONS: Creaky, Tedious Install, Flawed Design
October 13, 2014
Location:
Round Rock, TX
Cool, but not super user friendly
I bought this stem to try a 50mm stem and because I thought it looked cool, which it does. It works as well as any other stem, but it's creaky and more difficult to install than a typical 4 bolt plate style stem. I probably won't buy anymore stems of this style.

PROS: Attractive Design, Lightweight

CONS: Difficult To Install
August 1, 2014
Location:
Phoenix, AZ
different and worth it
Aggressive rider on aggressive trails with a hardtail and I tend to beat the tar out of my beloved SC Chameleon. First off, if you dont own a proper torque wrench, get that before you get this stem. Second, if you tend to throw the instructions away like I do, make an exception here. Be meticulous in the installation of this stem and it will reward you with strength and stiffness without weight. The times I've had to make trail-side adjustments have resulted in creaks. They go away once the stem has been re-installed at home base. Have Nevr-seze? Get some. You should be using it on all your fasteners anyway. This stem will make you a better rider AND mechanic.

PROS: Attractive Design, Durable, Lightweight
June 9, 2015
Location:
New Mexico
I would buy this product again
I bought my Trek remedy 8 off of a 6' guy who had an 80mm stem on it. I tried a 60mm then found this Renthal 50 and absolutely love it. Its not hard to set up as long as you just follow the steps, once its on then its on! very stiff and responsive especially when paired with the Renthal fat bars. I do a lot of trail riding at the moment because of where I live. Californias honda valley is an awesome place to ride with some challenging climbs and some rewarding decent. I prefer the downhill more like most people. This stem climbs fantastic and is wonderful on the downhills. I wont be buying any other stem.

PROS: stiff, Durable, Stylish, Lightweight
November 10, 2016
Location:
Victorville, CA
Surer stiff AND light
I ride aggressive and wanted a shorter stem that would also stiffen up my front end. The Renthal Duo stem exceeded my expectations because it was stiff and incredibly light. After a summer of riding, I have had no issues with this product.

PROS: Lightweight, Stiff

CONS: Only One Length

BEST USES: Freeride, All Mountain
October 31, 2012
Location:
Canada
I would buy this again.
Fast n secured.

PROS: Durable
May 25, 2016
Location:
Elk Grove
Good product with a minor issue
It's a good product. If coming from a long stem (70mm to 100mm), the shorter length stem (50mm) will change the bike's handling. Steering will be quicker. It looks good with Renthal Fatbar Lite Bars and Renthal Kevlar Lock-on Grips.

Downside is that it can be difficult to install and adjust because of its design. More specifically, the bottom screws are not easily accessible as compared to other designs.

PROS: Durable, Lightweight, Attractive Design

CONS: Difficult To Install

BEST USES: Mountain Biking, Enduro
November 5, 2014
Location:
Makati, Philippines
fits the bill
good littles stem, much better control that I was looking for
January 27, 2017
Purchased
6 months ago
Good stuff
This is a very nice stem, it's very lightweight and I personally love the design. The installation was really quite simple despite all the screws and once it's set it's really sturdy.

PROS: Attractive Design, Durable, Lightweight
April 15, 2013
Location:
Atlanta, GA

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Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.