1. Bicycle Electronics Items
  2. sku: 3394705144007793
  3. RACEFACE 91-4508K

RACEFACE 91-4508K Race Atlas Mountain Bike Stem Clamp 3565 895428009519 Face 35MM 1/8-INCH

91-4508k Raceface Race Face Atlas Mountain Bike Stem 35mm Clamp Black 1 1/8-inch

( Brand: Raceface ), ( Model: 13 3565 0 ), ( Part Type: Bike Stem Clamp ), ( Color: Black ), ( Itemheight: 76 ), ( Itemlength: 152 ), ( Itemweight: 160 ), ( Packageheight: 66 ), ( Packagelength: 148 ), ( Packageweight: 218 ), ( Size: 1 1 8 Inch ), ( Manufacturer Part Number: 91-4508K ), ( UPC: 895428009519 )

Review RACEFACE Race Face Atlas Mountain Bike Stem 35mm Clamp Black 1/8-inch

Introducing the Race Face Atlas Mountain Bike Stem, model number 91-4508k, a high-performance component designed to enhance the rigidity and control of your mountain bike. This stem is engineered with a 35mm clamp diameter, which provides increased stiffness and responsiveness compared to traditional 31.8mm stems.

The Race Face Atlas stem is manufactured using 6061-T6 aluminum, which is known for its strength and durability. It features a sleek, minimalist design with a 1/8-inch steerer tube diameter, making it a perfect match for modern mountain bikes. The stem boasts a length of 50mm, offering a balance between reach and control for most riders.

One of the most notable features of this stem is its forged and machined construction, which allows Race Face to minimize material while maximizing strength. This results in a lightweight stem that weighs only 135 grams, ensuring that your bike remains agile and nimble.

The Race Face Atlas stem also includes a 4-bolt faceplate with M5 hardware, providing a secure and reliable clamping mechanism for your handlebars. The stem's wide, flat clamping area ensures even pressure distribution, eliminating any unwanted twisting or flexing.

This stem is designed to fit handlebars with an outside diameter of 31.8mm, with a 7-degree rise for added comfort. Its shoot-through design allows for easy cable routing, making it a great choice for both mechanical and electronic shifting systems.

In summary, the Race Face Atlas 35mm Mountain Bike Stem, model 91-4508k, is a high-performance component that offers increased stiffness, responsiveness, and control for your mountain bike. Its lightweight, forged and machined construction, along with its secure 4-bolt faceplate and shoot-through design, make it a versatile and reliable choice for any serious mountain biker.

The Race Face Atlas 91-4508K mountain bike stem is a popular choice among riders due to its durability, adjustability, and modern design. However, like any product, it comes with its own set of advantages and disadvantages.

Advantages:

1. Adjustability: The Atlas stem offers 7-degrees of tilt adjustment and 35mm of reach adjustment. This allows riders to fine-tune their handlebar position for optimal comfort and control.

2. Durability: Race Face stems are known for their robust construction, and the Atlas is no exception. It is made from 6000 series alloy and features a CNC-machined body for strength and precision.

3. Lightweight: At 135 grams, the Atlas stem is relatively lightweight compared to other stems in its class. This can help improve the overall weight and responsiveness of the bike.

4. Compatibility: The Atlas stem is compatible with a wide range of handlebars and headsets, making it a versatile choice for different bike builds.

Disadvantages:

1. Price: The Atlas stem is priced higher than some other stems on the market. This may be a consideration for budget-conscious riders.

2. Threaded design: The stem's 1/8-inch threaded design may require occasional re-torquing to prevent loosening, which can be a hassle for some riders.

3. Limited color options: The Atlas stem is only available in a few anodized colors, which may not suit everyone's preferences.

In conclusion, the Race Face Atlas 91-4508K mountain bike stem offers a solid combination of durability, adjustability, and modern design. Its advantages include adjustability, durability, lightweight construction, and compatibility with various handlebar and headset setups. However, its disadvantages include a higher price point, the need for occasional re-torquing due to its threaded design, and limited color options.

If you are looking for a high-quality, adjustable mountain bike stem that offers a good balance of strength, lightweight construction, and versatility, the Race Face Atlas stem may be a good choice for you. However, if you are on a tight budget or prefer a simpler stem design, there may be other options worth considering. Ultimately, the decision comes down to personal preference and riding style.

Details:

Four bolt bar clamp holds securely in position, interlocking U-Shaped Handlebar Clamp Geometry. Race Face Atlas Mountain Bike Stem 35mm Clamp, Black, 1/8-Inch, Black. 6061-T6 aluminum. Face plate eliminates stress risers which cause your bar to bend or break.

The Atlas 35 stem was designed to reduce overall system weight while retaining the proven stiffness and performance line is known for.

part #: 914508k price

  • $115.99

specifications velocipedespark:

  • brand: Raceface
  • model#: 13 3565 0
  • part type: Bike Stem Clamp
  • color: Black
  • itemheight: 76
  • itemlength: 152
  • itemweight: 160
  • packageheight: 66
  • packagelength: 148
  • packageweight: 218
  • size: 1 1 8 Inch
  • manufacturer part number: 91-4508K
  • upc: 895428009519

shipping velocipedespark:

  • service: Standard
  • class: Standard
  • transit: 3-9 Days
  • type: Fixed
  • cost: $0.00

offer velocipedespark:

  • availability: In Stock
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • started: March 11, 2026

returns velocipedespark:

  • paid by: Buyer
  • time: 30 Days
  • method: Money back
  • policy: Returns Accepted

payments velocipedespark:

  • other
  • wallet: Paypal
  • credit card: Discover

seller velocipedespark:

  • # reviews: 16
  • rating: 94.4%
  • city: Denver, Colorado

general velocipedespark:

  • condition: New
  • Cycling > Bicycle Electronics > Other Bicycle Electronics
part type: bike stem clamp, itemheight: 76, itemlength: 152, itemweight: 160, packageheight: 66, packagelength: 148, packageweight: 218, size: 1 1 8 inch,
category: sporting goods > cycling > bicycle electronics, color: black, sku: 3394705144007793,

Raceface 91-4508K Is Similar To:

  • (59.3% similar) Product features: good value entry level stem with high end looks. Race face ride mountain 31.8-MM clamp, 6-DEGREEX100-MM, 1-1/8-INCH, black: a perfect compliment to your bar and seat post, the stem is designed specifically for riders looking engineering quality at a value price point...(June 21st, 2025)
  • (42.9% similar) Distributes loads away from bolts and into the body. The Chester 35 stem is a practical with 2 length options, and that legendary bomb-proof race face toughness baked right in. Rider not worried about having the lightest, most expensive on just want parts that can take a beating and won't let...(May 8th, 2026)
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2 offers $115.99–$115.99 USD
  • New. Offer #1 priced at $115.99 + $0.00 delivery = $115.99* total. Stem Angle (deg): 0deg. The Atlas 35 stem was designed to reduce overall system weight while retaining the proven stiffness and performance the Atlas line is known for.FREE SHIPPING
  • New. Offer #2 priced at $115.99 + $0.00 delivery = $115.99* total. 6061-T6 aluminum Four bolt bar clamp holds bar securely in position Interlocking U-Shaped handlebar clamp geometry Faceplate eliminates stress risers which cause your bar to bend or break Opposing bolts on steer tube clamp provides extreme clamping power while reducing stress on the steer tube Laser etched logos Product Specifics Stem Angle (deg): 0 S.H.I.S.FREE SHIPPING

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