Stems

The Bontrager Comp 31.8 stem is Blendr ready and provides a secure and confident connection to 31.8 handlebars for road, city, and mountain bikes. - 6061-T6 cast body construction - 4-bolt dual band clamp retains stiffness and reduces weight - Opposing 2-bolt steerer tube clamp with M5 corrosion resistant steel bolts - Blendr ready for seamless accessory integration - Compatible with Blendr Elite bases and Blendr mounts - Suitable for use on a road, city, or mountain bike - Safe for use on carbon steerer tubes and handlebars

On today's road bikes, silver stands out amid the sea of stealthy black color schemes. This time-honored color is available on the Zipp Service Course stem. Since the introduction of our line of Service Course and Service Course SL components, we've had amazing success with our pro-level athletes in all disciplines. While the successes have reinforced our design decisions, we have also drawn from their feedback. We not only learned how and why athletes make their equipment choices, but how our manufacturing methods and materials affect product performance. With new knowledge as well as new engineering methods, we are proud to introduce our completely redesigned line of Service Course and Service Course SL stems. - Class-leading stiffness-to-weight ratio - More options for a better fit - New faceplate and geometry for greater stiffness and easier installation - Distinctive silver finish

Proper fit on your bicycle isn't just for the pros. Swap out the old stock stem on whatever bike you ride for the adaptable Bontrager Comp alloy stem. - Construction: 6061-T6 forged and welded body - Removable 2-bolt face plate - Opposing 2-bolt steerer tube clamp - Corrosion-resistant steel bolts - Suitable for road or mountain use - Safe for use on carbon steerer tubes and handlebars - 50mm stack height

Zipp's Service Course SL Stem, crafted from 7075 aluminum, features a shape that's strong and lightweight, resulting in a best-in-class 1.85 grams per newton meter of stiffness. That results in no-flex sprints and accelerations. This stem is a favorite of Zipp ambassadors and pro athletes. - Distinctive Zipp cosmetics - Zipp Quickview integrated computer mount available separately - Lifetime warranty

Features a wide range of adjustment to dial in your fit. Ensure a proper fit for the best ride experience. Product details - High-quality alloy adjustable stem is quill-style, for use with threaded forks - Seamless integration with Bontrager's Elite Blendr mount kit, sold separately - Features 64 degrees of angular adjustment - 50mm stack height adjustment allows for a wide-range of fit options - Quill stem length is 180mm

- Full CNC machined AL6061-T6 alloy construction - Designed for use with oversized 35mm handlebars - 35mm stack height - 4-bolt front loading faceplate design - ISO-Mountain safety certified Specifications: - Fork Dia: 1-1/8" - Bar Clamp: 35 - Angle: 0° - Material: AL6061 - Finish: Polished

All Box stems are engineered and crafted using our Oversized Technology. As we follow the load paths down the handlebars we have focused our attention on the stem-to-bar interface. Since the Oversized handlebars have an increased wall thickness and tube diameter in this sector we have reciprocated with an augmented stem interface with greater surface area. We’ve done this by moving material from low stress areas. This has greatly minimized twist and contributed to responsiveness. As the stem in mated with the handlebars we have contributed to increased pedaling stiffness by providing a backstop to the “lifting” phenomenon. There is no point pushing hard on your pedals if you can’t pull up on your handlebars and deliver that power. Power can easily be lost to handlebar-to-stem deflection and the consequences can be poor power delivery and steering control. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: This particular model stem pushes our Oversized Technology to the extreme as it maximizes the shift of material from low stress zones to the Oversized interface. These stems are engineered for the smaller-sized racers. -Lightweight 3D Hollow Design -Front-Load Clamp Design to Fight Pull-Up Forces -Large Bar Bore -Large Hollow Clamping Bolts -Superior Strength

FSA ACR (Aerodynamic Cable Routing) Stems have a low-profile frontal area that is suitable for road and gravel riding. - Aerodynamic Cable Routing (ACR) - Low-profile frontal area - No rotation limit - Body and faceplate - 6061 T6 - Chromoly hardware - Specific frame and headset required - 31.8mm handlebar clamp diameter - 30mm fork clamp stack height - Compatible with: K-Force Light ACR Compact, SL-K ACR Compact, Energy ACR Compact, K-Wing AGX and K-Wing AGX handlebars

Quill stems are awesome! Classic, effective, and unnecessarily sexy, just like a big feathery quill pen. And if a quill is good enough to write the Declaration of Independence, Hamlet, and Moby Dick, you can bet it's good enough for your bike. Finished with polished silver and available in a -17-degree or +30-degree rise, you can grab one that's just write (boom—punned) for your riding style no matter how relaxed or aggressively you ride! -22.2mm insertion diameter

eeSilk Stem is a fatigue-reducing compliance stem that noticeably reduces vibrations on variable surfaces. With up to 20mm of tunable compliance, an easy single bolt external elastomer change and a soft/firm compliance switch – the eeSilk Stem makes any road, no matter the terrain, smoother. - Weight: 225g - 235g - Angle: -6° (only) - Stack Height: 49mm - Stem Clamp: 31.8mm

Oversized diameter 35 mm stem accessible to all mountain riders. Oversized and in control Equip your whip with this 35mm Line stem and give yourself the oversized advantage. Forged from 6061-T6 3D aluminum, this 0-degree stem provides the increased strength of the latest mountain-specific bar diameter. Product details - Oversized 35mm clamp diameter provides a new level of strength and weight savings - Forged from 6061-T6 3D aluminum - Laser etched calibration marks make dialing in the perfect angle simple and repeatable - Compatible with both Knock Block and standard headsets and spacers - Knock Block system protects the frame from impacts by fork and handlebars by eliminating over-rotation of bars - Available in a wide range of sizes for today's mountain rider - Safe for carbon bars

Origin-8's Pro Fit Alloy Ergo Stem is a great upgrade for road and mountain bikes. It's 3D forged from lightweight and durable 6061-T6 aluminum. It has a 4-bolt, 2-piece face clamp that shaves grams and makes for quick and easy handlebar installation/removal. Plus, the opposing steerer clamp bolts apply more even holding force to protect the fork and keep your bars from changing position.

• Forged aluminum • 2-bolt clamp • 250mm tall (extra tall)

- Available in a variety of lengths, angles, and bar bores for the perfect fit - Road or Mountain compatible - 3D forged AL6061-T6 alloy construction - 40mm stack height - 4-bolt front loading one-piece faceplate design - ISO-Mountain safety certified

Genuine replacement parts Get back on the road with a genuine replacement stem. For optimal adjustability. - High-quality alloy adjustable stem is compatible with threadless forks - Features 64-degree angular adjustment for a wide range of fit needs - 4-bolt dual band clamp retains stiffness and reduces weight - Blendr ready for seamless accessory integration - Compatible with Blendr Comp & Legacy Elite bases and mounts, sold separately - Other parts are required to install this on a bike, you will be prompted to add the appropriate parts to your cart along with this item

Origin-8's Classic Sport Quill Stem is crafted from light and durable forged 6061 aluminum with chrome-plated steel bolts. The handlebar clamp bolt is hidden for a clean look. Different lengths are available for customizing the reach to your handlebars. This sweet stem is 180mm tall from the bottom of the bolt to the top of the stem so that you can raise and lower your bars, too.

3-D forged AL6061-T6 alloy construction - 40mm stack height - 4 bolt front loading faceplate design

Zipp's SL Speed stem represents the essence of carbon componentry. It's stiff, secure and light weight with a sleek design that compliments any bike. It's a perfect addition to a mountain climber's favorite feather-light road bike, but it's tough enough to tackle gravel and cyclocross. Designed using SRAM Exogram technology, found in SRAM RED cranks, the new SL Speed Stem weighs just 123g (100mm) while exceeding our stiffness-to-weight standards. The SL Speed is available in six sizes ranging from 70 to 120mm to meet any rider's fit needs. Includes stiff aluminum faceplate and titanium hardware Torx T25 heads for precise torque readings and ease of adjustment. - Updated distinctive Zipp cosmetics - Designed using SRAM Exogram technology - New SL Speed Stem weighs just 123g (100mm) - ±6° carbon stem - Secure with four bolt faceplace using Torx T25 bolt heads - Matte Black finish - Lifetime warranty - Zipp Quickview integrated mount available separately

Origin-8's Classic Pro Quill Stem is crafted from light and durable forged 6061 aluminum with chrome-plated steel bolts. The handlebar clamp bolt is hidden for a clean look. This sweet stem has a polished anodized finish for durability and style. Different lengths are available for customizing the reach to your handlebars.

To meet your urban cycling needs, FSA brings you their Metropolis Stem. It features a clean-looking 2-bolt front-mounted faceplate and is made of 3D-forged aluminum for lightweight strength. The 30° rise puts you in an alert, upright riding position — ideal for navigating city streets. - Stack Height: 40mm - Weight: 180g

The SL Sprint Stem is an ideal balance of stiffness and lightweight. The stem weighs in at just 1.8g per newton meter of stiffness using SRAM's Exogram technology. Designed with feedback from top pros to meet the unrelenting demands of Grand Tour sprinters. Zipp also tapped into expertise gained from its pioneering carbon stems and exhaustively researched the marketplace to create the SL Sprint Stem. The SL Sprint comes with its own stem cap that's designed to be aerodynamically efficient by blending into the stem body. Available in six sizes, ranging from 90 to 140mm, to meet any rider's fit needs. - Updated distinctive Zipp cosmetics - Carbon Exogram construction delivers the stiffest stem on the market gram for gram. - Secure with four bolt faceplace using Torx T25 bolt heads - Matte Black finish - Lifetime warranty - Zipp Quickview integrated computer mount available separately

A traditional, lightweight, alloy stem with increased compliance for road and MTB use. Light as carbon. Strong as hell. The super compliant 7050-T6 aluminum alloy Race X Lite bike stem is light enough for the road but strong enough for the mountain. It features a flip-flop 7 degree rise and 31.8 clamp that help it excel in lightweight versatility for a variety of hand positions. - 7050-T6, 3D, forged alloy construction - 4-bolt face plate helps distribute clamping load on ultra-lightweight handlebars - Angled steerer tube clamp spreads clamping pressure on steerer and is carbon friendly - Countersunk, corrosion-resistant steel bolts do not require washers - Dual clamp bolts are strategically positioned to evenly distributing clamping forces - This stem requires at least 5mm of spacers above and below the steerer tube clamp area - Go green and save green – Zero packaging means zero waste and zero extra cost

The smarter upgrade Outfit your road bike with the Pro Blendr stem to provide confident handling and integrated accessory capability. The forged alloy construction means you'll get the stiffness you demand but in a weight that'll make others jealous. - Pro-level quality 31.8mm clamp diameter stem weighs less than many carbon stems - Blendr technology seamlessly integrates accessories with included Blendr Pro base and Blendr XXX accessory mounts - Blendr XXX mounts include Bontrager Ion and Trip, Garmin, GoPro and SRM accessories - Countersunk, corrosion-resistant steel bolts do not require washers - Approved for carbon bars and steerer tubes - Safe installation requires 5mm spacer above and below stem

The BrickTop alloy stem is a classic style, top-mount BMX stem with a 4-bolt handlebar clamp.

Basic, clean, and dependable performance—that's the Gossamer stem. 6061-T6 aluminum is forged and then CNC-machined to achieve the Gossamer's shape. The four-bolt faceplate is cold-forged and holds the bars with authority. Laser-etched graphics are the finishing touch. - 3D-forged and CNC-machined from AL6061/T6 - 4-bolt cold-forged front clamp diameter - Chromoly hardware

The Odyssey Broc v2 stem is a refined update to Broc Raiford's popular signature Raft stem. The Broc stem utilizes a classic top-load and 6-bolt design, but it now comes with a slightly taller 33mm rise and sleeker lines below the clamp. The bolt heads have been upgraded to a larger size and the clamping area features unique surface contouring for superior handlebar grip. - Special surface contouring and a larger bolt head spec for superior handlebar grip - Six bolt clamping configuration - Headset pre-load bolt recess (32mm diameter)

All Box stems are engineered and crafted using our Oversized Technology. As we follow the load paths down the handlebars we have focused our attention on the stem-to-bar interface. Since the Oversized handlebars have an increased wall thickness and tube diameter in this sector we have reciprocated with an augmented stem interface with greater surface area. We’ve done this by moving material from low stress areas. This has greatly minimized twist and contributed to responsiveness. As the stem in mated with the handlebars we have contributed to increased pedaling stiffness by providing a backstop to the “lifting” phenomenon. There is no point pushing hard on your pedals if you can’t pull up on your handlebars and deliver that power. Power can easily be lost to handlebar-to-stem deflection and the consequences can be poor power delivery and steering control. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: In this particular model stem we’ve tailored the Oversized strategy to favor utility and access. The geometry has been altered to allow for easy handlebar removal while at the same time scavenging material from low stress zones. Ideal for those who don’t want to compromise on user experience to gain performance. These stems are engineered for the larger-sized racers.

The forged alloy construction of the Bontrager Pro Blendr Stem delivers stiffness without compromising its light weight or sleek looks. Easy integration of lights, a computer, and more with the Blendr integration system make this stem a perfect upgrade for any bike. - Pro-level quality 31.8mm clamp diameter stem weighs less than many carbon stems - 4-bolt dual band clamp securely holds handlebar - Uses high-quality M5 corrosion-resistant faceplate bolts with 5.2Nm torque spec - Integrate accessories with included Blendr Pro base and Blendr XXX accessory mounts - Mounts intended for use with Ion and Trip, Garmin, GoPro and SRM accessories - Approved for carbon bars and steerer tubes - Safe installation requires 5mm spacer above and below stem - Included Blendr accessories: Pro Mono Base, Trip Computer mount, and High Ion Light mount

- 3D forged AL6061-T6 alloy construction - Designed for use with oversized 35mm handlebars - 40mm stack height - 4-bolt front loading faceplate design - ISO-Mountain safety certified Specifications: - Fork Dia: 1-1/8" - Bar Clamp: 35 - Angle: 0° - Material: AL6061 - Finish: Matte

Full CNC machined AL6061-T6 alloy construction - 35mm stack height - 4 bolt front loading faceplate design