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;
The perfect fit The Bontrager Elite Blendr Stem provides easy solutions for accessory integration. This alloy stem is light and strong, and it gives you endless options to integrate lights, a computer and more with Blendr accessory integration. Product details - Blendr Elite allows seamless accessory integration - 4-bolt dual band clamp retains stiffness and reduces weight - Opposing 2-bolt steerer tube clamp - Uses M5 countersunk, corrosion-resistant steel bolts with 5.2Nm torque spec - Approved for carbon bars and steerer tubes - Suitable for both MTB or road use - Includes Blendr mono base and accessory mounts
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
The Bontrager XXX Integrated Handlebar/Stem is a one-piece carbon bar/stem combo that brings clean looks and light weight to any road bike. Lightweight 100% OCLV Carbon construction offers a great road feel and control, while calibration marks and a flat front surface ensure easy lever installation. Features Di2 compatible ports for clean internal wire routing when integrated with Shimano EW-RS910 bar-mounted Di2 junction. Product details - Seamless accessory integration with Blendr - Flat surface front of bar for clean cable routing - Calibration marks allow precise, accurate and repeatable brake lever position - Variable radius, compact flare (VR-CF) shape offers wrist clearance in the drops - 100% OCLV Carbon construction - Internal relief channel eliminates need for additional spacer above stem - Safe for use with carbon and alloy steerer tubes - Compatible with Shimano EW-RS910 bar end Junction-A for cleaner Di2 routing
Electra's Cruiser Aluminum Stem is a stable, solid replacement for your original equipment. Designed to work with a 1-inch headset, the Cruiser Stem is made from no-frills aluminum that keeps off the weight while maintaining strength where you need it.
An oversized 35mm stem that is lightweight and durable for the burliest mountain riders. Oversized and in control Equip your whip with this 35mm Line Pro stem and give yourself the oversized advantage. Forged from 6061-T6 3D aluminum, this finely finished stem provides the increased strength of the latest mountain-specific bar diameter at the lightest weight possible. Product details - Pro-level quality stem in oversized 35mm clamp diameter for increased strength and minimal weight - 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 - High-strength corrosion-resistant steel bolts ensure the freshest look for longer - Available in a wide range of sizes for today's mountain rider - Safe for carbon bars
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
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
- Full UD carbon construction stem - 4 bolt aluminum faceplate for added rigidity - Stainless steel hardware - Reversible +/-7° angle - 40mm stack height - 125g weight in 100mm length - ISO-Road safety certified
- 3D forged 6061 alloy road stems in 6 or 17 degree angles - Lightweight 4 bolt faceplate - Material: AL6061-T6 - Finish: Sandblasted
- 3-D forged AL6061-T6 alloy construction - 40mm stack height - 4 bolt front loading faceplate design
3-D forged AL6061-T6 alloy construction - 40mm stack height - 4 bolt front loading faceplate design
Full CNC machined AL6061-T6 alloy construction - 35mm stack height - 4 bolt front loading faceplate design
Full CNC machined AL6061-T6 alloy construction - 40mm stack height - 4 bolt front loading faceplate design - EN-Mountain safety certification
• Aluminum head • Stainless-steel 180mm-tall shaft • 1-inch model has 22.2mm quill, 15/16-inch model has 21.1mm quill • Single-bolt clamp
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
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.
Constructed of 6061-T6 aluminum and featuring a 4-bolt face clamp, the Piston BMX threadless stem offers reliability at a great value.
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
Dial in your perfect bike fit with FSA's Omega Stem. 3D-forged and CNC machined construction makes this stem stiff and light for power transfer and steering precision. The four-bolt faceplate holds bars securely, and this stem features stainless steel bolt hardware.
$49.99 - $59.99
The Afterburner MTB Stem is 3-D forged and CNC machined from AL6061/T6. You have the option to run this stem at a + or – 6-degrees to suit your racing style. - 3D forged and CNC machined from AL6061/T9 - 4-bolt cold forged front clamp - 40mm clamp stack height - Weight: 149g
- Steerer Diameter: 1" or 1-1/8" (includes shim) - Length: 70, 90, 110mm - Bar Clamp: 25.4 or 31.8 (includes shim) - Angle: +/- 35 degrees - Material: 6061 Aluminum - Shot-peen finish
Strong, light, and capable An oversized 35mm clamp diameter MTB stem that offers increased strength and minimal weight 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. - Oversized 35mm clamp diameter offers increased strength and minimal weight - 6061-T6, 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 - Knock Block system protects frame from impacts from over-rotation of bars and fork crown - Available in a wide range of sizes for today's mountain rider - High-strength, corrosion-resistant steel bolts - Approved 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.
$34.99 - $39.99
Origin-8's X-Tra Lift Stem Riser is an adapter that lets you raise your handlebars and stem. It fits over and securely bolts to 1 1/8-inch forks to extend them. This gives you more height to raise your stem/bars. You use the included spacers to dial in the best fit. The Stem Riser is made from forged 6061 aluminum and is anodized for durability.
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.
Simple, elegant, lightweight design can be run in negative or positive position for -7°/ 7° in rise. 3D forged 6061-T6 aluminum combined with a 4-bolt faceplate provides increased stiffness. - Weight: 167g (100mm) - Length: 70, 80, 90, 100, 110, 120, 130mm (±7°) - Material: 3-D Forged 6061-T6 Aluminum - Clamp Diameter: 31.8mm - Angle: 83° (±7°) - Steerer Tube Diameter: 11/8in - Stack Height: 40mm - Clamp Width: 40mm - Clamp Tourque: 5Nm - Finish: Matte Black with White Accents
Origin-8's Fix8 OS Stem is the perfect upgrade for your super-stylish fixed-gear bike and it'll work on mountain bikes, too. It's 3D forged from lightweight and durable 6061 aluminum and features a 4-bolt 31.8mm-diameter handlebar face clamp that holds fast and makes for quick and easy handlebar installation/removal. Plus, the opposing steerer clamp bolts apply more even holding force to keep your bars from changing position. At only 50mm long, the Fix8 is great for flatland tricks, bar spins, and anything else you come up with.
The BrickTop alloy stem is a classic style, top-mount BMX stem with a 4-bolt handlebar clamp.
The Kink Highrise stem is CNC-machined from 6061-T6 aluminum and features a lifted top-load body design. A recessed fork cap bolt area and machined body sides create a clean look and reduce unnecessary weight. The rounded stem body and chamfered edges throughout, keep the Highrise stem as knee-friendly as possible. This stem is available in two lengths to fit your riding style or preference. TECH SPECS - Reach: 48mm and 53mm - Rise: 31.5mm - Stack Height: 30mm - Material: 6061-T6 Aluminum - Bolts: Solid w/ 6mm Allen Hex - Weight: 9.6oz (48mm)
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