

🚵♂️ Ride Tough, Ride Smart: The Stem That Means Business
The Race Face Atlas Mountain Bike Stem is a premium 6061-T6 aluminum stem engineered for aggressive all-mountain and downhill riders. Featuring a four-bolt interlocking U-shaped clamp and a stress-riser-free faceplate, it delivers unmatched strength and precise handlebar control. At 50mm length and 155 grams, it offers a perfect balance of lightweight performance and durability, making it a top choice for riders seeking both comfort and rugged reliability on demanding trails.
| ASIN | B008CC2XTE |
| Best Sellers Rank | #111,062 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #85 in Bike Stems |
| Brand | RaceFace |
| Brand Name | RaceFace |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (198) |
| Date First Available | November 17, 2009 |
| Global Trade Identification Number | 00821973186832 |
| Included Components | Race Face Atlas Mountain Bike Stem (Black, 31.8-mm Clamp, 50-mm, 1-1/8-Inch) |
| Item Dimensions LxWxH | 3.94 x 2.36 x 2.36 inches |
| Item Package Dimensions L x W x H | 5.79 x 2.48 x 2.28 inches |
| Item Weight | 155 Grams |
| Item dimensions L x W x H | 3.94 x 2.36 x 2.36 inches |
| Manufacturer | RaceFace |
| Material | Aluminum |
| Model Name | RaceFace 91-4510K |
| Model Year | 2013 |
| Number of Items | 1 |
| Package Weight | 0.17 Kilograms |
| Part Number | 91-4510K |
| Size | 31.8-mm Clamp, 50-mm, 1-1/8-Inch |
| Sport Type | Sport |
| Style | Stems |
| Suggested Users | mens |
| Tensile Strength | 31000 Pounds Per Square Inch |
| UPC | 821973186832 |
| Warranty Description | Limited Manufacturer |
A**S
Killer stem for your mountain bike
This is an extremely sturdy and nifty looking stem for your mountain bike. In addition to it's high functionality it has a lot of mojo. And the squiggly line graphics on it appear nicer in person than in the photos. It can be installed quickly and is an easy upgrade for your mountain bike. I went from a 90mm stem that came with my bike (a Bianchi) to this here 50mm jobber, which moved the bars about 1.5 inches closer to me and now I'm much more comfortable. But don't go by me, find what is comfortable for yourself. There are some good videos on UTube that can give you some guidance for choosing a new stem. The videos were helpful to me but you don't have to believe everything they say. Apparently there are some theories about how stem length can affect how your bike handles depending on the kind of riding you do. Seems to me the Atlas level of Raceface components are at a higher level than some of the others, but you're paying for it. I also bought the monster gigantic Atlas flat pedals but that is a different review.
D**M
Razor sharp steering, great handlebar control.
Installation only takes a few minutes if you have the right tools. I recommend using a torque wrench to insure proper installation and therefore meet the manufacturers specs and performance. My factory stem (65mm) felt too far out so I decided to get this 50mm stem instead. Additionally I was looking for a stronger and more durable piece that can handle well. I am super satisfied with this quality stem! Thank you RaceFace for designing it and thank you Amazon for selling it Prime. 😀 A few pointers during installation: - This stem has torque specs showing for all screws which is super nice and professional. - When installing new piece, tighten the steer tube cap screw first, and then stem steer tube mounting screws last. This method should help to avoid a potential gap between fork and stem and/or spacers. - I used a torque wrench to tighten all screws. I prefer to hear 3 consecutive torque wrench clicks and making sure its tights across all screws equally. - I used 4 NM to tighten steer tube cap. Most steer tube caps do not have torque spec but I find 4NM to work perfectly on my bike. MTB adventures \m/ \m/
D**D
Perfect
This thing is beautiful!. I needed a longer stem on my new bike, because that's what I'm used to. It replaced an Industry 9 stem. At 15mm longer the weight gain was minimal. My only beef is that the Race Face instructions say "torque the screws to the specified values", but those values are nowhere to be found. Not even one their website.
R**L
Raceface makes solid products. Great stem upgrade that will be on all of my bikes.
High quality stem, very impressed with the design, finish and machine work- Quality control was on point! I bought a budget mountain bike this past year and am adding a few upgrades as I go along. I cannot say enough good things about the stem or the company. After seeing the type of products they make I would absolutely buy again and love to tour the factory.
S**A
Love the topo graphics
Size I needed, fits well
T**S
Solid build
Works great!
J**N
Quality piece
Love this stem. Fit & finish is really nice, adds that extra touch to finish off the build. Of course strength and weight are solid, no worries there.
N**I
Would not buy again
I bought this thinking for the price it cost, the hardware included would be better quality and would help avoid the situation I ended up in when trying to install this on my bike. The screws for the front plate snapped in two of the holes half way into the hole and the top left screw stripped itself the first time tightening it, and I could not remove it even after getting the handle bars out of its loose grasp.I bought 31.8 (1 1/8) handle bars and they were to loose and there were no shims included so if you do purchase this product, keep that in mind. I have a $15.00 wake stem holder that has better quality parts than this one. I. Surprised it has 5 stars which is why I'm leaving a review because I feel like this was extremely over priced and the quality was disappointing.
K**D
Alles ist von höchster Qualität. Wie erwartet!
J**S
Mi bicicleta de montaña pedía a gritos una potencia corta. Me decidí a probar esta. La longitud de 50mm me parece perfecta y a 0 grados no implica tener que inclinar mucho el cuerpo hacia adelante. La he probado estos días y estoy gratamente complacido. La potencia es cómoda y ágil. el diseño "Atlas" con las curvas de nivel (topografía) a lo largo del poste le dan un look bastante racing y moderno. El poste está muy bien construido y la verdad luce muy bien ya puesto. Si es un poco costoso pero vale mucho la pena. +PROS +PESO LIGERO 149g +CÓMODO, NO CANSA +AGIL +MUY BUEN DISEÑO -A MEJORAR -PRECIO -QUE TRAIGA UNA TAPA En pocas palabras, no hay mucho que pedir, el producto cumple y muy bien con las características que ya mencioné. Te lo recomiendo mucho Gracias por leer mi reseña!
C**Y
Perfect. Light. Looks amazing.
A**É
De momento solo he podido probarla en par de salidas, pero la sensación es muy buena. Buscaba acortar la distancia de la potencia de serie, y lo he logrado. El aspecto de los materiales y los acabados son de primer nivel.
G**E
Leggero ,robusto molto confortevole per la misura 50 mm
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