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;
$25.00 $89.99 72% Off
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
Dimension 25.4 Stem is a fully forged 6061-T6 aluminum stem with 4-bolt handlebar clamp. - 2-D forged AL-6061-T6 - Four-bolt handlebar clamp - 41mm height - Dimension stems are not intended for use with carbon handlebars or carbon steerer tubes - Weight: 130g-180g
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
A 3D-forged, then precision-machined, lightweight, aluminum mountain bike stem in both 31.8mm and 35.0mm models rated for cross country, trail, all-mountain, enduro, and gravity applications. - Blind bolt holes and shaping - Cold-forged and precision-machined - No-gap face plate and clamp area - Stainless hardware
An adjustable stiffness suspension stem that smooths out the ride by reducing the affects of impacts and road vibrations. - Unwanted vertical movement is absorbed by twin interchangeable elastomers - Stem retains torsional rigidity - Travel is limited to 1-2 centimeters - Made with 6061-T6 Aluminum - Includes 5 swappable elastomers (2 pre-installed, 3 additional) to customize the ride feel for your bike, weight, and riding style
The RaceFace Atlas 35 direct mount stem is an all new 2-piece direct mount design. Super lightweight, low profile design with flush mount bolts and 5mm spacers kit to let you dial in your perfect set up. - Machined from 2014 Aluminium - Weight-saving single bolt faceplate
The RaceFace Aeffect 35 stem brings the advantages of a 35mm bar to the XC/Trail crowd at a mid-level pricepoint while maintaining a refined Race Face look. - Forged and machined from 6061 aluminum - Interlocking 4 bolt bar clamp secures your bar and distributes loads away from bolts - Stack Height: 39mm - Weight: 155g (60mm)
The Madone is built as a seamlessly integrated machine designed to do one thing: go fast. Trek's Madone Integrated Bar/Stem is an important part of that integration. Available in a variety or widths and reaches so you can dial in your superbike specifically for you. - Compatible with model year 2016/17 Madone - Variable radius, compact flare (VR-CF) shape offers wrist clearance in the drops - 100% OCLV carbon fiber construction - Seamless accessory integration with Blendr - Blendr accessory bases and mounts sold separately
Easton’s lightest aluminum stem is the choice of road racers and top XC pilots alike. The advanced EA90 aluminum tubing and 3D forging process results in a perfect blend of strength and weight. Easton’s patented DST distributes clamping forces more evenly over a larger area, making it the perfect stem for today’s lightweight aluminum and carbon handlebars. - Finish: Black Ano - Weight: 130g (100mm) - Rise: Varies - Clamp diameter: 31.8mm - Steerer: 1 1/8-inch - Length: 80mm, 90mm, 100mm, 110mm, 120mm, 130mm - Materials: EA90 alloy
Developed for longer-travel trail bikes, Promax's S-29 stem offers the perfect configuration to set you up for maximum comfort and control. Featuring an oversize extension tube and faceplate with massive clamping area, it’s sure to keep your bars stylishly in place through the most demanding terrain. These stems are cold-forged and CNC-machined from 6061-T6 aluminum for strength, low weight, and durability.
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. Titanium bolts complete the package. - Semi Integrated Cable routing (SCR) - 3D-Forged and CNC-machined from AL2014 - 4-bolt sculpted SL faceplate
Promax Banger stems have a front-load design and can be used with either side up, providing a 5-millimeter drop or rise. Available with 48-millimeter and 53-millimeter extensions, they are cold forged from the highest quality 6061-T6 aluminum then CNC machined to enhance the shape and further reduce weight. - Stack height: 30.5mm
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
$30.00 - $34.99
For cross country and all-mountain riding, Dimension Trail Stems provide a broad array of sizing options, rigorously tested to ISO 4210 Mountain standards. - Constructed with AL-6061-T6 aluminum - Shot-peened finish - Dimension stems are not intended for use with carbon handlebars or carbon steerer tubes
Save your steerer tube and eliminate headset spacers with the Velo Orange Tall-Stack alloy stem. It gives your bike's cockpit a nice clean look. Available in Polished or Black, the 17-degree angle allows the stem to be level on most modern frames. And, you can use handlebar clamp shims to adapt to smaller handlebar clamp diameters, if you like. - Stack height: 75mm - Not recommended for use with carbon steerer tubes
Your stem may seem inconsequential, but it is the point of transfer between your skilled handling and the bike itself. An impressive refinement of our popular top level Easton alloy stem, the 2019 EA90 stems have an larger boom diameter for increased stiffness and, by utilizing our highest quality alloys, we were able to remove excess material for even more weight savings. We’ve also created a custom computer mount (included with EA90 stems and sold separately) that is compatible with all ICM faceplate stems for cleaner lines and improved aerodynamics. With lengths ranging from 70mm to 130mm, we can accommodate fits for all sizes of frames and riders. We shaved our new EA90 down to 120 grams for a 100mm stem and, with weights like these, we surpass much of the alloy and carbon competition in the market, while giving you the durability, confidence and control you expect from Easton. - Finish: Black Ano - Weight: 120g (100mm) - Rise: +/- 7-deg - Clamp diameter: 31.8mm - Steerer: 1 1/8-inch - Length: 70mm, 80mm, 90mm, 100mm, 120mm - Materials: EA90 alloy - Tech: ICM compatible (faceplate mount included), Top Lock, Taperwall
Make sure your fit is dialed in your race against the clock! Bontrager's Speed Concept Stem allows you to set up your Speed Concept bike for proper ergonomics and aerodynamics. Plus, the precisely integrated design keeps your super aero bike fast and looking pro! - Low-Near = 17° rise / 77mm length - Low-Far = 100° rise / 110mm length - Mid-Near = 50° rise / 67mm length - Mid-Far = 45° rise / 110mm length - High-Near = 80° rise / 67mm length - High-Far = 75° rise / 110mm length
An aerodynamically honed stem with adjustable length and angle to optimize your position. The rider makes up 80-90% of total aero drag, so refining your position can produce some of the biggest gains of all. Further, the shape of the stem, plus the ability to eliminate headset spacers, allows for cleaner airflow at the front of the bike, producing valuable drag reduction. Created in conjunction with Team Dimension Data, the stem delivers the confident and responsive ride feel demanded by the best riders in the world. This stem is intended for negative drop only and cannot be flipped or reversed in a positive rise. - Material: Carbon - Faceplate Material: Aluminum - Hardware Material: Titanium - Stack Height: 42.5mm with length shim / 45.5mm with angle shim - Torque Spec, Face Plate Upper Bolt: 10Nm, Lower Bolt: 6Nm - Torque Spec, Steer Tube: 5.5Nm
Whisky's No.7 Mountain stems offer a stout connection for modern mountain bars. They match the simple, clean aesthetic of other Whisky cockpit components. - Bead-blasted, then anodized, finish - 3D-forged for increased strength, then CNC-machined - 4-bolt faceplate design for easy installation
$34.99 - $35.00
Dimension 31.8 Stems are fully forged 6061-T6 aluminum stems that have a 4-bolt handlebar clamp. - 31.8mm can be used with 26.0 bars with additional shim (SM5317) - Dimension stems are not intended for use with carbon handlebars or carbon steer tubes - Weight: 130g-180g
Whisky's No.7 Stem is a lightweight stem with a clean aesthetic. Stems only have a few jobs to do: hold the bars, provide stable support, and look good. Ours does all three admirably. Paired with any of our handlebars, it rounds out the perfect Whisky cockpit. Available in a wide range of lengths to perfect your bike's fit and performance.
With its classic blend of high strength and low weight, Easton's EA50 stem is a smart choice for your favorite ride. It's made of 3D forged aluminum for amazing stiffness and strength. Easton's Top-Lock technology locks the stem and faceplate together, creating a highly rigid interface while minimizing the loads on the bolts, making the EA50 perfectly safe for carbon bars.
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.
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
Whether you're on the open roads or scenic mountain trails or anywhere else you ride, Easton's EA70 Stem enhances your cycling experience. It's made of 3D forged aluminum for amazing stiffness, low weight and strength for excellent steering control in all conditions. Plus, Easton's TopLock technology locks the stem and faceplate together, creating a highly rigid interface while minimizing loads on the bolts, making the EA70 perfectly safe for carbon bars.
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 Syntace Flatforce stem utilizes a 12mm drop for all length options, allowing riders to keep their MTB handlebars in a lower riding position. - 200° clamp face increases handlebar strength and fatigue life - 42mm wide bar clamp for increased handlebar support - Super-low handlebar position solution for unique fit requirements - Sabertooth bar clamp design insures no bolts or clamping surfaces protrude - Stack Height: 27mm
- Intended for XC, Trail and All Mountain use - Machined to precision with 7075 aluminum for high strength & fatigue resistance at a very light weight - Interlocking 4 bolt bar clamp secures your bar and distributes loads away from bolts and into the body - Bar Clamp Diameter: 35mm - Stem Angle: -84 deg , +96 deg
FSA's Omega line is the perfect workhorse component group for the sport rider who wants race-winning technology and durability along with classic good looks. - 3D-forged and CNC-machined from AL6061/T6 - 4-bolt cold-forged face plate - Chromoly hardware - ±6° - 31.8mm handlebar clamp diameter - 35mm fork clamp stack height - 127 grams (100mm)
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