Stems

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 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

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

An ultralight OCLV Carbon stem with flush-fit faceplate bands and Blendr integration for a clean look. The lightweight stem for seamless integration OCLV Carbon construction of the RSL Blendr stem combines lightweight strength with a classy aesthetic. It's equipped with captured titanium hardware that ensures you never drop bolts again, and the dual-banded faceplate shaves weight and works seamlessly with mounted accessories using the Blendr integration system. Product details - Ultra-light OCLV Carbon construction - Flush-fit 4-bolt dual band bar clamps offer seamless look - Captured Titanium screws save weight while making installation easy - Integrate accessories with included Blendr Mono Base and Blendr Ion and Garmin mounts - Mounts available for use with Ion and Trip, Garmin, GoPro, and SRM accessories - Approved for carbon bars and steerer tubes

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

3D forged 6061-T6 Aluminum. - Excellent value and performance - A great way to try a few different stems - Suitable for Road or XC MTB - Sand-blasted black finish - + / - 7 degree - 1-1/8" steerer, 31.8 mm bar clamp

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 a strong 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 - Material: Aluminum - Length: 35mm or 50mm - Stem Angle (deg): 0 deg - Weight: 135g. (35mm); 161g. (50mm)

TruVativ's Hussefelt is an aggressive DH/freeride stem forged from 6061 aluminum for superb stiffness and superior strength. 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 2-bolt clamp secures to your steerer for pinpoint steering precision and stiffness.

The Elite X4 Mountain Stem is instantly recognizable because of Thomson's legendary style, and with strength to spare, this stem is more than just a pretty face. Made from a solid, one-piece block of 7000-series aluminum, the X4 combines exceptional strength with light weight for durable, solid steering control to tame the toughest trails. It has a four-bolt clamp design and reversible graphics, so your X4 looks great whichever way you run it.

Lightweight and durable 2D forged-alloy stem. - Removable faceplate for easy bar installation - 4-bolt clamp for optimal handlebar support - High rise for improved riding comfort - 35 degree rise

- 3D forged alloy construction - Fits 1-1/8-inch (28.6mm) steerer forks - Fits 25.4mm handlebar clamp - M6 Black hardware - Weight: 161g (110mm)

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

An oversized 35mm clamp diameter stem suitable for all disciplines of mountain biking. Oversized strength The Elite 35 stem is the perfect addition to any mountain bikers' cockpit. Forged from lightweight 6061-T6 3D aluminum, the oversized 35mm design offers increased strength and a lighter overall bar and stem system. Product details - Oversized 35mm clamp diameter offers increased strength and minimal weight - 6061-T6 3D forged aluminum construction - Laser-etched calibration marks make dialing in the perfect angle simple and repeatable - Compatible with both Knock Block and standard headsets and spacers - High-strength, corrosion-resistant steel bolts - Approved for use with carbon handlebars

3D Forged 6061-T6 alloy. - Strong, stiff and light - Rugged design can handle the demands of today's All-Mountain rider - Low stack height - 31.8 Bar clamp, 0 rise - 150g (45mm length)

- 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

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

- Fully CNC machined - Featuring an oversize center bore - Extensive machining and external webbing to maximize structural strength and stiffness and minimize weight

Chromag's HiFi V2 stem is light and extremely strong for the ultimate control and performance. The HiFi features a blended shape thanks to 3D forging. Chromag contours every surface for human contact and structural optimization. - 3D forging - 175 grams (35mm length) - Low stack height

Chromag's HiFi stem is light and extremely strong for the ultimate control and performance. The HiFi features a blended shape thanks to 3D forging. Chromag contours every surface for human contact and structural optimization. - 3D forging - 200 grams - Low stack height

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

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

Lightweight and durable forged alloy stem. - Removable faceplate for easy bar installation - 30 degree rise - Fits 25.4mm handlebars

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

Profile's Aris stem is a no-nonsense stem made from 6061-aluminum that's been shot-peened and anodized for strength and durability. The 4-bolt face plate is stiff, ultra tough and makes handlebar changes a breeze. And, the opposing-bolt steerer clamp is safe and secure.

- Lightweight, 3D forged, 2014 aluminum alloy - Proprietary Stealth recessed cable routing system enhances aerodynamic performance - Oversize box-section increases torsional stiffness with tuned vertical compliance

Strong, light and elegant. Chromag's longest running stem, the Ranger, has a refined body shape that represents their own advancement in 3D modelling and CNC profiling. The Ranger is stronger and stiffer for today’s increased demands with blended body features to increase performance with a more fluid look. The Ranger evolves with the same physical fundamentals, more flow, and increased strength. Starting at 140g, the Ranger is light yet extremely stiff for positive control at the front end.

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.

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

- 3D forged and CNC machined AL2014 - 4 bolt sculpted faceplate with titanium hardware - 40mm stack height - 113g (100mm)

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