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Stems
$54.99
The Box Two Front Top is a modern 1 inch by 22.2mm stem designed specifically for BMX racing. Box Two Top Load stem bodies are cold-forged and CNC-machined from the highest quality 6061-T6 aluminum. The lightweight front clamps are cold-forged and CNC-machined for increased stiffness and strength.
-Material: 6061-T6 Aluminum
-Process: Cold-Forged
-Hardware: Chromoly Clamping Bolts
-Finish: Anodized w/Laser-Etched Graphics
Weight:
-40mm: 138 g / 4.9 oz
-45mm: 150 g / 5.3 oz
$54.99
The Box Two Front Top is a modern 1-1/8 inch by 22.2mm stem designed specifically for BMX racing. Box Two Top Load stem bodies are cold-forged and CNC-machined from the highest quality 6061-T6 aluminum. The lightweight front clamps are cold-forged and CNC-machined for increased stiffness and strength.
-Material: 6061-T6 Aluminum
-Process: Cold-Forged
-Hardware: Chromoly Clamping Bolts
-Finish: Anodized w/Laser-Etched Graphics
Weight:
-48mm: 234 g / 8.3 oz
-53mm: 240 g / 8.5 oz
$54.99
The Box Two Front Load is a modern, 22.2 stem designed specifically for BMX racing. Box Two Front Load stem bodies are cold-forged and CNC-machined from the highest quality 6061-T6 aluminum. The lightweight front clamps are cold-forged and CNC-machined for increased stiffness and strength.
-Material: 6061-T6 Aluminum
-Process: Cold-Forged
-Hardware: Chromoly Clamping Bolts
-Finish: Anodized w/Laser-Etched Graphics
Weight:
· 48mm: 224 g / 7.9 oz
· 53mm: 230 g / 8.1 oz
$69.99
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
$69.99
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 modulated the Oversized formula to emphasize pedaling stiffness. We have transferred material specifically to sectors that experience sudden stress from pulling up on the handlebars. You’ll feel a difference in your acceleration. These stems are engineered for the larger-sized racers.
-Material: 6061-T6 Aluminum
-Process: Cold-Forged
-Hardware: Chromoly Clamping Bolts
-Finish: Anodized w/Laser-Etched Graphics
Weight:
-48mm: 280 g / 9.8 oz
-53mm: 290 g / 10.2 oz
$69.99
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.
$79.99 - $99.99
Hollow stems are cold forged from the highest quality 6061-T6 aluminum available. Featuring an open skeletal design and a dual mid-bolt wedge mounting system, they are lightweight yet maintain a very high level of strength. A 53mm extension stem weighs just 218 grams/7.7 ounces. By removing the rear pinch bolts and moving the mounting bolts to the middle of the stem, we reduced the weight and size and eliminated a serious hazard to the rider’s knees.
These stems come with either a 48- or 53mm extension and a 22.2mm bar bore. To ensure proper clamping force, the stem must be mounted on a fork with at least 45mm of exposed steerer tube. Not compatible with forks that have carbon fiber steerer tubes.
$23.99
This BMX quill stem combines a steel rod with an alloy top. The 4-bolt top clamp securely fastens handlebars.
$35.99
The DefendR BMX threadless stem has a AL6061 forged alloy construction and a 4-bolt face clamp.
- 30mm stack height
- 240g
$37.99
With its alloy/steel construction and 4-bolt clamp design, the MX is a trusty BMX quill stem.
- Quill Length: 4-1/4-inches
- Quill diameter: 21.1mm
$39.99
With its alloy/steel construction and 4-bolt clamp design, the Freestyle is a trusty BMX quill stem.
- Hollow-core stem bolt
- Quill Length: 4-1/4-inches
- Quill diameter: 21.1mm
$41.99
The BrickTop alloy stem is a classic style, top-mount BMX stem with a 4-bolt handlebar clamp.
$20.99 - $30.99
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
$49.99
Run your favorite 31.8mm clamping diameter handlebar on a bike with Knock Block with the Rhythm Comp 31.8. It adds Knock Block compatibility to a durable stem with multiple lengths to let you fine-tune the fit to your ride.
Get 31.8mm handlebar compatibility with your Knock Block system;Also compatible with standard headsets and spacers;Knock Block system protects 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;See Service Parts for other Knock Block parts;
$89.99
Trim some weight and add some style to your ride with Bontrager's RXL Stem. Made from forged 7050-T6 aluminum, this stem is exceptionally light and strong. In fact, it's equally suited to the sharp impacts of mountain biking as it is to the long-mile rigors of the road. And, its shot-peened finish offers exceptional strength while the 4-bolt faceplate makes installation easy, and the opposed-bolt steerer clamp is carbon friendly.
$99.99
A lightweight, all-mountain stem with the burly attitude of a billy goat to tackle everything the mountain throws your way.
All-mountain tough. XC light. No compromise.
Bashing through rock gardens and nailing big hits puts incredible strain on a mountain bike stem. Luckily the super stiff, torsion-resistant body and wide faceplate of the Rhythm Pro stem is XC light and all-mountain tough ,providing you with more control of the trail.
- 7050-T6, 3D, forged alloy construction
- Wide, 4-bolt, alloy handlebar clamp
- Opposing 2-bolt steerer tube clamp
- Corrosion-resistant steel bolts
- Designed for aggressive technical trail riding, but suitable for road or mountain use
- Not for use on carbon steerer tubes
- Safe for use on carbon handlebars
- Go green and save green – Zero packaging means zero waste and zero extra cost
$120.99
Strong, light, and capable
The Kovee Pro 35 stem is the perfect centerpiece for cross country race bike. This lightweight stem is optimized for the latest XC mountain bike standard, with a 35mm clamp diameter that combines with a 35mm handlebar to provide a stronger, lighter system.
An oversized 35mm clamp diameter MTB stem that offers increased strength and minimal weight
- Oversized 35mm clamp diameter offers increased strength and minimal weight
- 7075 T73, 3D, forged alloy construction
- Laser-etched calibration marks make dialing in the perfect angle simple and repeatable
- Compatible with both Knock Block and standard headsets and spacers
- Blendr compatible for an elegant, integrated accessory mounting solution
- Available in a wide range of sizes for today's mountain rider
- High-strength, corrosion-resistant steel bolts
- Approved for carbon bars
$120.99
A light, durable 35mm MTB stem that adds Blendr capability for clean, integrated mounting of lights or computer.
Equip your whip with this 35mm Line Pro stem and give yourself the oversized advantage. Forged from light and strong 7075-T73 3D aluminum, the oversized 35mm design offers increased strength and a lighter overall bar and stem system weight. Use with included Blendr base and mount for integrated mounting options for light or computer.
Product details
- Oversized 35mm clamp diameter offers increased strength and minimal weight
- 7075 T73, 3D, forged alloy construction
- Laser-etched calibration marks make dialing in the perfect angle simple and repeatable
- Compatible with both Knock Block and standard headsets and spacers
- Blendr compatible for an elegant, integrated accessory mounting solution
- High-strength, corrosion-resistant steel bolts
- Includes Blendr mono base, Garmin Mount, and Ion Light Mount
- Approved for carbon bars
$120.99
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
$681.99
An integrated bar and stem combo that cleanly and securely holds cables for a refined look and added aerodynamics.
Save watts, ride faster
This aero upgrade cleans up your cockpit by securely storing cables for a refined look and free speed. The Aeolus RSL bar/stem combo is proven in the wind tunnel to save 7 watts, making it 10% faster than its predecessor. It's light, fast, easy to install, and Blendr-compatible for seamless integration of your light or Garmin.
Product details
- OCLV Carbon construction is ultra-light, compliant, and durable
- Integrated bar/stem design improves aerodynamics and saves weight
- Proven in the wind tunnel to save 7 watts, making it 10 % faster than its predecessor
- Integrated cable management system held secure with M4 hex bolt, 5Nm torque
- Variable Radius Compact (VR-C) design allows longer reach and drop
- Includes Blendr mono and duo bases with mounts for Ion light and Garmin computer
- Approved for use with carbon or alloy steerer
$125.39
Enduro has unquestionably evolved ever closer to Downhill. The Enduro MK3 Stem is all you need for hitting the trails with wingsuit type accuracy. This Stem was born out of rider's demands for precision and for those moments when you have to be inch-perfect.
Taking design elements from our World Cup-winning Direct Mount MK3 Stem and splicing these with our critically acclaimed Enduro MK2 Stem.
We developed the Stem specifically with Pro's and Bro's alike. It was obvious we all live for the same challenge of pushing our own limits. As riders, we want a Stem that inspires confidence to change lines through the middle of a rock garden like it's no big deal or slap the inside of a turn and translate all your weight to front-wheel traction. Providing ear-to-ear grins and saying to your mates at the bottom of a trail, "Did you see that?".
From the start of the design process, it became clear that we wanted extra rigidity. To yield this, we would need to make the Stem using a forging process - a new thing for us. The result of this allowed us to achieve a more intricate shape than machining alone. It involves applying a huge amount of force to redirect the grain flow of the material. As a result, this gives superior strength, fatigue and impact resistance.
Another area where we made a significant improvement in rigidity was by increasing the clamping surface area on the steerer tube. We've vastly increased this to give a stout, rock-solid feel and as close to the MK3 Direct Mount Stem as we could. Furthermore, everything is held securely by stainless steel bolts to ensure there is no rust even in the grimmest weather. In addition and like every Burgtec product, it's fully CNC machined and anodized in all your favourite flavours.
Tested with the world's fastest jibbers and sendiest racers, this stem has everything you need to hit all those rowdy racing lines or pull that little bit harder off that big sender.
- Forged and Fully CNC machined from AL6061 – T6 Aluminium
- Stainless Steel Hardware
- Available lengths - 35mm, 42.5mm and 50mm
- Available in both 31.8mm (Black only) and 35mm Clamp
- Weight: 35mm 138g, 42.5mm 152g, 50mm 160g
$64.99
Wider and beefier with and improved clamping area and recessed compression bolt for a clean look.
- Bar Clamp Diameter (mm): 22.2
- Steerer Clamp Diameter: 1-1/8" ins
- Stem Type: Top Load
$69.99
Dakota Roche signature stem. Beefy but slick 1" OD clamping area for extra strength.
- Bar Clamp Diameter (mm): 25.4
- Steerer Clamp Diameter: 1-1/8" ins
$229.99
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
$35.00
Fully integrated.
A convenient mount on the stem securely holds SP-Connect compatible smartphone cases and adhesive mounts to put all of your data in an optimal position.
Where it thrives:
The open road, leisurely rides, in town
What it's built for:
Compatibility, durability
Highlights:
- Compatible with SP Connect smartphone cases and adhesive mounts
- Integrated mount
- Range of sizes
$55.00
Descend with confidence.
The perfect match for any trail or enduro bike paired with the HollowGram SAVE Riser 35mm handlebar for increased descending prowess.
Where it thrives:
Challenging trails, down hills
What it's built for:
Control, confidence
Highlights:
- 35mm clamp size
- 37mm length
- 0° degrees rise
$55.00
The workhorse.
Whether you're upgrading your stock parts or looking for something a bit more eye catching, the alloy ONE stem delivers.
Where it thrives:
The open road, gravel roads, up and down hills
What it's built for:
Agility, control
Highlights:
- Lightweight aluminum construction
- Wide range of sizes
- Eye-catching and sleek design
$150.00
Waste not, want KNØT.
Part of the KNØT SystemBar, this aluminum stem helps save six watts over a traditional round handlebar. Not only that, you can adjust the bar position. Have cake. Eat cake.
Where it thrives:
The open road, up and down hills
What it's built for:
Aerodynamics, control
Highlights:
- One-piece looks, two-piece function
- Wind tunnel proven, hides cables
- Compatible with 2019+SuperSix EVO
$150.00
System = speed.
Paired with the SAVE or KNØT SystemBar, you end up with the speed and good looks of a one-piece system with the adjustability of a two-piece.
Where it thrives:
The open road, up and down hills
What it's built for:
Aerodynamics, efficiency
Highlights:
- Integrated computer mount
- Compatible with most bicycles
- One-piece looks, Two-piece function
$71.00
- 6061 premium alloy
- Designed to be light and strong
- Enduro/DH focused
- 31.8 & 35mm clamp
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