Mass is the enemy of performance, so we pulled out all the stops to make the Alpinist Cockpit the lightest one-piece bar/stem combo that passes our standards; at 255 grams (110 mm x 420mm). Not only does light weight make for faster climbing, it also improves acceleration and ride quality. The Alpinist Cockpit's round tube shape and tradition bend respect tried and true forms, but the optimized composite layup and internal cable routing are decidedly modern. Available in 10 sizes, there's one that will fit you perfectly. And because they are backed by a no-fault crash replacement policy and lifetime warranty, you can rest easy knowing that we've got your back. - Bend: Tradition radius ( 125mm Drop / 75mm Reach) - Clamp Diameter: 31.8 - Compatibility: Shimano, SRAM, Campagnolo; Di2 and EPS - Material: Advanced carbon composite - Sizes: 400 mm x 80/90/100mm; 420mm x 90/100/110/120mm; 440mm x 110/120/130mm - Stem Angle (Rise): 6-Degrees - System Weight Limit: 275lbs / 125kg - Weight: 255 grams (110 mm x 420 mm)
- Direct Drive integrated stem - Carbon HM ultra rigid composition - 20g lighter than the C-Stem and more aerodynamic - New handlebar clamp - No visible screws - Better drag coefficient - Angle adjustment: - 17° to + 13°
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
Zipp’s SL Speed stem represents the essence of carbon componentry. It’s stiff, secure, and lightweight with a sleek design that complements 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. - Includes stiff aluminum faceplate and titanium hardware - Torx T25 heads for precise torque readings and ease of adjustment - Stack height: 41mm
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
Just as cyclists maximize performance by being as light, but as powerful as possible, Zipp's SL Sprint Stem strikes the ideal balance of stiffness and lightweight to deliver responsive handling without wasting a single watt. - Unidirectional carbon - The SL Sprint comes with its own stem cap that’s designed to be aerodynamically efficient by blending into the stem body - Includes stiff aluminum faceplate and stainless steel hardware with TORX heads on all bolts for precision torque readings and ease of adjustment - Black matte carbon finish with white Zipp logos
$354.99 - $374.99
Arx, Latin for stronghold and bridge, is 3T’s race-proven design for the perfect connection between fork and handlebar and suited to all cycling disciplines. Clamp design is optimized to ensure a secure fit on composite steerers and bars without the need for potentially damaging high torque values during assembly. 3T inhouse tests show Arx’s clamp by far exceeds the CEN standard, and also that it works very well with other brands of handlebar. Arx Ltd is the carbon-fiber version of the stem, with Ti bolts. Super-light and super-stiff, it is a highly evolved, modern design weighing just 118g.
Some might call it magic—PRO likes to refer to it as co-creation: aligning all forces to work in favor of you. The PRO Vibe Stem is designed to align your cockpit perfectly with your bike for an optimal riding position. Supreme stiffness offers you more control during those high-speed descents or maneuvers. It's also developed for ultimate integration with Di2 to give you maximum aerodynamic performance and ultra-clean styling. With the specially positioned cable ports, you can internally route Shimano Di2 cables. All of the advantages of Di2, with none of the cables showing. Align yourself with performance—use the PRO Vibe Stem. - Anodized AL-7075 - Shimano DI2 integration - Lightweight titanium bolts - Integrated topcap
Zipp's Service Course SL OS 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 - Wide range of sizes and angles. - Service Course SL OS stem made for 1-1/4" steerer tube bikes. Ships with shims for 1-1/8" steerer tubes - Zipp Quickview integrated computer mount available separately - Lifetime warranty
Zipp's Service Course SL-OS Stem provides lightweight strength and versatility to help you achieve the perfect riding position. At only 140 grams, the Service Course keeps your rig light while maintaining toughness for the long haul. Change the angle of the stem quickly and easily with the included shim that lets you tailor your comfort even more. And, the Service Course works with both 1 1/8-inch steerers and 1 1/4-inch. • Included shims allow the stem's rise to be adjusted to 4°, 6°, or 8° angles.
Every Profile Design product is perfectly optimized to minimize aerodynamic drag. So, it's no surprise that Profile's Aeria Stem has hidden bolts and a low profile faceplate to smooth oncoming air. The sculpted shape is constructed from strong, lightweight forged aluminum, and the 17-degree drop ensures an aerodynamic fit on your time trial or triathlon bike.
- Fully CNC machined - Featuring an oversize center bore - Extensive machining and external webbing to maximize structural strength and stiffness and minimize weight
- CNC machined 2014 aluminum body and 7075 aluminum clamps - 240 degree wrap-around, twin plate clamping system - External webbing to maximize structural strength - 118-158g including stainless steel bolts
The S-Works Venge stem has been designed to work as a system with the Venge cockpit to optimize aerodynamics, stiffness, and weight. - Seamless integration with the 2019 Venge frame and hidden cables - Optimized for use with the S-Works Aerofly II handlebars for integration - Its dropped clamp and flat upper profile cheat the wind for the maximum aero advantage - Extremely stiff for responsive handling and out of the saddle sprinting
At just 113g for a 100mm extension, the Energy stem represents cutting-edge aluminum construction. The shape is 3D forged from 2014-aluminum for great strength, with the final refinements carried out by CNC machining. Chromoly bolts complete the package.
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
Zipp's Service Course SL Stem provides strength and reliability at just 120 grams. Forged of 7075 aluminum with titanium bolts, the SL is stiff enough to harness the power of your burliest sprints and withstand the jarring forces of the meanest potholes. It keeps the front end completely rigid, providing control no matter the condition.
Specialized's S-Works SL Stem is sleek and lightweight. - 3D-forged and CNC-machined, 7075 aluminum road stem . - Includes expander plug for carbon steerer tubes and titanium hardware.
Inspired by the sleek and deadly lines of a Copperhead snake, the sweeping center channels of the Copperhead stem wrap around the entire stem to minimize material while delivering the a stong steerer mounted stem. Deity's focus on durability and dedication to the symmetry between strength and weight is showcased in the balance of style and function that is the Copperhead stem. - Designed for all applications from All MTN to Slopestyle and anything in between - CNC Machined from a solid block of 6061 T6 Aluminum - Exceptionally detailed chamfered edges and channels throughout - 55mm wide clamping platform - Bar Clamp Diameter (mm): 31.8 mm - Material: Aluminum - Length: 35 mm - Stem Angle (deg): 0 deg - S.H.I.S. Stem Clamp Diameter: 28.6 - Stack Height: 30 - Weight: 135 g
Deity's INTAKE Direct Mount DH Stem takes machining and flow to another level! Yet another premium race good designed to make your kit look amazing and perform even better, the INTAKE DM stem is available in a 31.8mm bore and, like its counterpart the INTAKE 35mm DM Stem, it utilizes a 3-piece design for ease of installation and a super-stiff set-up. This DEITY design is the culmination of form and function and hits the sweet spot for your cockpit! - DIRT MAG Top 100 Product for 2018 - 50mm reach - Zero degree rise to keep you low and in control - CNC Machined from a solid block of aluminum - Boxxer Standard platform - 7075 T73 Aluminum - Available in high polished black ano finish - 31.8mm bore clamp for the perfect complement to our new BLACKLABEL 800 Handlebar - 69mm wide clamping platform for an incredibly stiff front end - Covered by our Lifetime Crash Replacement Policy to the original owner - 146 grams
This tiny package packs a big punch with a minimal design. The MICRO DIRECT MOUNT DH Stem is strong enough to carry the DEITY name while touting one of the lightest designs in the world. There isn't any wasted space on this moto-inspired 4-piece design, but don't let that fool you. Its 65mm super-wide clamping platform delivers incredible stiffness and transfer of power from you to the front wheel. At a compact length of just 30mm, this Boxxer standard 31.8mm stem is the perfect fit for the longer top tube designs of today's DH bikes while offering the flexibility of a flip-flop graphic option for your choice of stealth or flash. There is no shortage of machining detail or design in this mini stem and, as with all DEITY designs, we take extra care to deliver only the best! - CNC machined from hard high-grade 7075 T73 aluminum - Compact 30mm length for the current crop of long downhill frames - Compatible with 31.8mm oversized handlebars - Boxxer standard platform - Moto-inspired 4 piece design - Super-wide 65mm clamping platform for torsional stiffness - Flip flop graphics kit - Hidden front crown bolts - 10mm rise - One of the lightest Direct Mount Stems in the world - High polished finish with chamfer detailing throughout for stunning detail - Weight: 110 grams
Steep descents, nasty rock gardens and high speed: all in a day's work for TruVativ's burly Holzfeller Stem. Made from oversize 3D forged aluminum for serious strength, the Holzfeller thrives on gravity-fueled abuse. The short length provides supreme confidence when railing down the sketchiest steeps. Four bolts attach the faceplate for a vise-like grip on your bars, and the direct BoXXer mounting delivers pinpoint steering precision and stiffness.
- Highly weight-optimized single crown stem, ideal for Enduro applications with 31.8mm handlebars - Human Factor Design features micro increment size options, tuned to fit any rider size and style - Human Factor cockpit setup index facilitates tuning of upsweep and backsweep - Ultra-short stack height and true zero-degree rise - Chamfered bar clamp to reduce stress risers and increase fatigue life in handlebars - Forged 2-piece faceplate design reduces overall weight without compromising bar clamp security or stiffness - Shot peen-anodized surface increases strength, durability, and fatigue life Features: - Key Technologies: Human Factor Design, MGR Alloy, Chamfered bar clamp, Custom Top-Cap included - Material: 6-Series Alloy, 3D forged CNC optimized body, 2D forged faceplate - Rise (°): 0 - Diameter: 31.8mm - Stack Height: 34mm - Weight: ±133g (33mm) / ±138g (38mm) ±140g (43mm) ±143g (48mm) - Finish: Shotpeen anodized
The Cavity stem was developed with pain staking focus on strength, function and attention to detail. Tapered body for cleaner lines and weight reduction, multiple internal and external machining processes to reduce every gram possible and chamfered edges throughout for stunning detail. - Machined from 6061 T6 aluminum - Wide 55mm faceplate for increased stiffness with wide handlebars - Rounded edges at all sides, corners, and angles - Reverse cross bolt system for increased clamping power - Flip flop design for increased range of height adjustment - Pro Installation Tip: Always run the steerer tube all of the way through the stem with a small spacer on top - Bar Clamp Diameter (mm): 31.8 mm - Material: Aluminum - Stem Angle (deg): 0 deg - S.H.I.S. Stem Clamp Diameter: 28.6 - Stack Height: 33 - Weight: 150 g
TruVativ's feathery Stylo T40 Stem is 3D forged from 7050 aluminum for that perfect balance of light weight, stiffness and precision steering control on the trail. Six titanium bolts secure this stem to your fork and bars and keep the weight down, too. Plus, with four different lengths and two color options, you're sure to find the perfect stem with which to crown your ride.
Based on our famous Crystal stem, the Radio Axis stem is CNC machined out of the highest quality 6061-T6 alloy, lifts your bars nice and high, and prevents them from slipping due to our wider 48mm clamping area and the larger head 6mm bolts. The choice of most of our team, this beauty now comes in a wild Sandblasted Purple finish.
Spank's Director Direct Mount Stem fuels your need for gravity riding, with rock solid mounting, stiff forged aluminum construction, and the control-enhancing combo of a low rise and short extension. • Forged, CNC-machined aluminum • Boxxer/Fox40/Manitou compatible • Lockdown hardware included • Brushed anodized finish
Adjustable in both reach and rise, Spank's Spike 25/30 DM Stem allows the rider to find the ideal stance and balance point. 2D forged for strength, and CNC optimized to just 135g, this unique direct mount also features chamfered barclamp zones to reduce stress risers and improve fatigue life in any handlebars. As DH frames have gotten longer, shorter and more adjustable, direct mount cockpit designs have become a necessity. Developed with the World's Top DH pros, the Spike 25/30 DM Stem takes DH cockpit tuning to a new level. It's remarkably short reach was accomplished first by SPANK, by bringing the lockdown hardware into the barclamp, while maintaining the ease of set up and resistance to moving under impact. - CNC machined 7075-T6 aluminum - Rise-adjustable: 28-33mm - Reach-adjustable: 25/30mm - Fits 2005-current BoXXer, Fox 40, Dorado, and 2012-current 888 forks
$107.00 - $109.99
The Atmos 7k stem is a lightweight performance stem designed for trail and cross-country use and is the lightest stem in the Atmos range. Featuring a rise or drop of 6° depending on your preference, all fasteners are adjustable via a T25 tool for easy, quick adjustments. The Atmos 7k also features an integrated GoPro mount. - ±6° angle - Integrated GoPro mount - T25 fasteners for 1 tool across the cockpit SPECIFICATIONS - Stem Angle/Rise: 6 degrees - Clamp diameter: 31.8mm - Steerer clamp diameter: 1-1/8 in - Hardware: Steel
Adjustable in both reach and rise, Spank's Spike 25/30 DM Stem allows the rider to find the ideal stance and balance point. 2D forged for strength, and CNC optimized to just 135g, this unique direct mount also features chamfered barclamp zones to reduce stress risers and improve fatigue life in any handlebars. As DH frames have gotten longer, shorter and more adjustable, direct mount cockpit designs have become a necessity. Developed with the World's Top DH pros, the Spike 25/30 DM Stem takes DH cockpit tuning to a new level. It's remarkably short reach was accomplished first by SPANK, by bringing the lockdown hardware into the barclamp, while maintaining the ease of set-up and resistance to moving under impact. - CNC machined 7075-T6 aluminum - Rise-adjustable: 28-33mm - Reach-adjustable: 25/30mm - Fits 2005-current BoXXer, Fox 40, Dorado, and 2012-current 888 forks
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