Assenmachers Bicycle Company

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Stems

Bontrager Rhythm Comp Knock Block Stem-No Packaging
$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;
Ritchey WCS Carbon Matrix C220 84D Stem
$159.95
You really can have it all-the new WCS C220 stem rivals the performance of the revolutionary C260 stem design, but it's quicker and easier to install and remove, thanks to a press-fit handlebar clamp interface and forward-facing hardware. First proven on the Ritchey TRAIL stem, the C220 handlebar clamp design creates a more secure interface by wrapping a full 220-degrees over the handlebar. Bolt forces are aligned with the clamp so that the stem body 'embraces' the handlebar, which is less prone to damaging lightweight bars. This clamp design allows for a lighter faceplate and stem body with no sacrifice in strength or stiffness. The Carbon Matrix stem body is forged 7075 aluminum with a stiffness-enhancing carbon exoskeleton which makes this 12% stiffer than the WCS alloy C220 stem. Premium quality CRMO steel bolts are used throughout. - Material: 3D forged 7075, carbon encased body - 4 x 4mm coated CrMo steel forward-facing faceplate bolts - 2 x 4mm coated CrMo steel offset steer tube clamp bolts - 5Nm torque max on all hardware - Compatible with all 31.8mm bars - Press-fit clamp design installs and removes like a standard stem - Angle: 84/6 degree - Stack: 42mm - Steerer: 1-1/8" - Faceplate Width: 42mm - Matte UD carbon finish - 126g (110mm)
ENVE Aero Road Stem
$300.00
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
Fizik Cyrano R1 Stem
$120.00
Stems need to be light, simple, and rock solid. Fizik checked all the boxes with their Cyrano R1 Stem. The Cyrano stem forms an integral part of Fizik's Spine Concept fitting technology. A four-bolt face plate provides excellent torsional stiffness, and the choice of lengths and angles ensures that your perfect fit is out there.
Sunlite Alloy 2-Bolt Quill Stem
$24.99
• Forged aluminum • Classic streamlined shape • 2-bolt clamp • 180mm tall
Sunlite ATB/Urban Quill Stem
$25.99
• Forged aluminum • Anodized finish • 2-bolt clamp • 150mm tall
Race Face Turbine Stem
$93.99
- 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: 31.8 mm - Stem Angle: -84 deg , +96 deg
Zipp Service Course SL-OS Stem
$132.00
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.
Zipp Service Course Stem
$55.00
Zipp's Service Course Stem is strong, light, and reliable. Forged of 7075 aluminum with stainless steel bolts, the Service Course 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.
Origin8 Ultim8 Quill Stem
$52.99
- Lightweight forged aluminum construction - Hidden 2-bolt face clamp - EN Road safety certified - Compatible with 1-inch steerer (22.2mm internal diameter) - Length: 90mm, 110mm, and 120mm lengths - Bar clamp diameter: 26mm - Stem angle: -17 degrees - Steerer length: 140mm
Chromag HiFi
$99.00
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
Ritchey Classic C-220 Stem
$69.95
You really can have it all; Ritchey's WCS C-220 stem features revolutionary stiffness and classically inspired good looks, but it’s quick and easy to install and remove thanks to a press-fit handlebar clamp interface and forward-facing hardware. The C-220 handlebar clamp design creates a more secure interface by wrapping a full 220 degrees over the handlebar. Bolt forces are aligned with the clamp so that the stem body ‘embraces’ the handlebar, which is less prone to damaging lightweight bars. This clamp design allows for a lighter faceplate and stem body with no sacrifice in strength or stiffness. The stem body is forged 2014 aluminum for further weight reduction. Premium quality chromoly steel bolts are used throughout. - Material: 3d forged 2014 alloy body - 4 x 4mm coated CrMo steel forward-facing faceplate bolts - 2 x 4mm coated CrMo steel offset steer tube clamp bolts - 5Nm torque max on all hardware - Compatible with all 31.8 bars - Press-fit clamp design installs and removes like a standard stem - Angle: 84/6 degree - Steerer Height: 42mm - Steerer diameter: 1-1/8" - Faceplate Width: 42mm - Silver Finish - 121g (110mm)
TruVativ Descendant Stem
$65.00
Mix and Match might work for clothing, but not your mountain bike cockpit. The new Descendant stem is 3D forged from 7075 alloy, then machined for weight reduction, and is the perfect match for your Descendant bars—not that you’re worried about that kind of thing. Built strong, to take on the world’s toughest trails, Descendant stems keep you pointed in the right direction. - Colors: Black - Material: Al-7075 - Lengths: 40mm, 50mm, 60mm - Bolts: Steel - CNC machined for weight reduction - Four bolt handlebar clamp - Two bolt steerer clamp
Spank Oozy Trail Stem
$75.00
All Mountain strength and stiffness...trail tuned! Spank Industries' OOZY Trail Stem offers all the performance and confidence of a gravity stem, in a highly weight-sensitive, trail-tuned geometry package. 3D-forged and CNC weight-optimized, the OOZY Trail stem comes in popular lengths, with an ultra-short stack height and true zero degree rise. Chamfered barclamps reduce stress risers in the critical bar/stem interface, and ultra-light spacer and sealed top-cap (included), make set-up a breeze. The OOZY Trail Stem's characteristic hourglass sectional profile and wide stance enhance torsional stiffness and integrates beautifully with modern frame designs. Weight, performance, aesthetics and great value...the OOZY Trail Stem has it all. - Key technologies: MGR, chamfered bar clamp, "Snap Fit" sealed top cap - Material: 3D Forged MGR Alloy, CNC Weight Optimized - Length (mm): 50 / 65 / 75 - Rise (mm): 0 - Diameter (mm): 31.8 - Stack height (mm): 35 - Weight (g): +-150 (50mm) / +-170 (65mm) / +-180 (75mm) - Finish: Shot Peen anodized, CNC/Laser etched logos
Promax S-29 Stem
$69.99
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.
Ritchey WCS Trail 35 Stem
$94.95
More than just a beefed-up version of Ritchey's other stems, the WCS Trail 35 stem features their patented C220 clamp fits a wide variety of riser bar bends and still packs a dramatic increase in stiffness and strength over competitors' designs. The 35mm clamp diameter takes advantage of the increased stiffness and power of larger diameter handlebars. - 3D Forged 2014 alloy for superior strength and lightweight - 220 degree, extra-wide bar clamp improves stiffness and fits most riser bars - Oversize 35mm bar clamp for use with 35mm OD handlebars - Material: 3D Forged 2014 alloy - Rise: 0° - Stack Height: 45mm - Faceplate Width: 40mm - 130g (70mm)
Promax DA-1 Stem
$69.99
Promax's DA-1 XC mountain bike stem is 3D cold-forged, then CNC-machined from 6061-T6 aluminum to create a lightweight and strong stem. The two-piece faceplate features their bar-gripping DWT (Dynalock Web Technology), which increases the bar/stem interface.
Velo Orange Tall-Stack Stem
$40.00
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
Syntace Flatforce Stem
$119.00 - $139.00
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
Odyssey 6 Piece Stem Bolt Set
$3.99
The Odyssey stem bolt pack features 6 - 6mm stem bolts that are M8 x 1.25mm thread.
Sunlite Threadless Alloy Road Stem
$27.99
- 3D forged 6061 alloy road stems in 6 or 17 degree angles - Lightweight 4 bolt faceplate - Material: AL6061-T6 - Finish: Sandblasted
FSA SL-K Stem
$81.99
The updated SL-K stem is lighter than ever – just 141g for the 100mm length. Using high-strength 2014-aluminium and sophisticated forging and machining, FSA finely controls the amount of material used to cut weight. - 3D forged and CNC machined AL-2014 - Carbon fiber faceplate - Chromoly hardware
TruVativ Stylo T20 Stem
$40.00
TruVativ's Stylo T20 stem is 3D forged for that perfect balance of light weight, stiffness and control on the trail. Four bolts securely attach the face plate and make changing out handlebars a breeze.
Ritchey SuperLogic C-260 Carbon Stem
$269.95
When stiffness and weight are the top on your list, you want Ritchey's SuperLogic C-260 Carbon Stem. This revolutionary design starts with a bar clamp that wraps a full 260-degrees around the handlebar to distribute clamping stress evenly through the handlebar, faceplate, hardware and stem body. Ritchey's first full-carbon stem, the C-260 features high-modulus carbon for stellar strength-to-weight ratio that translates into a solid but forgiving ride. And, the steer tube clamp uses three bolts and a curved slot to reduce clamp stress on the steer tube, so you can run carbon bars and a carbon steerer with no problem.
Origin8 Classic Sport Quill Stem
$19.99
Origin-8's Classic Sport 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. Different lengths are available for customizing the reach to your handlebars. This sweet stem is 180mm tall from the bottom of the bolt to the top of the stem so that you can raise and lower your bars, too.
Origin8 Classique Sport MTB Stem
$23.99
Origin-8's Classique Sport ATB Stem is crafted from light and durable forged aluminum. It features a 2-bolt handlebar face clamp for easy bar installation and removal. And it even has a built-in brake cable stop. This stem is 180mm tall from the bottom to top of the quill bolt so that you can raise and lower your bars (the bolt is hidden inside the vertical part of the stem). This is a nice choice for that classic mountain or touring bike.
Bontrager Speed Concept Stem
$86.50
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
FSA OS-99 CSI Stem
$189.99
FSA's K-Force OS-99 CSI is 3-D forged and CNC machined from AL2014 before a uni-directional (UD) carbon weave skin is applied through the Carbon Structural Integration (CSI) process. To further reduce weight the OS-99 uses a 4-bolt sculpted AL2014 alloy/carbon faceplate and titanium hardware. CSI is a process that permanently bonds carbon to alloy, to create a true hybrid product, with many of the benefits of aluminum and carbon. - Stack Height: 41mm - Weight: 126g (100mm)
Origin8 Flux MTB/Road Stem
$64.99
Full CNC machined AL6061-T6 alloy construction - 40mm stack height - 4 bolt front loading faceplate design - EN-Mountain safety certification
WeThePeople Patrol Stem
$60.99
Based on the classic "Trail style" stems we all used to ride back in the day, the Patrol stem features a smooth, simple shape with a wider faceplate, larger head bolts, and hidden CNC cutouts under the stem to keep the weight down without making the stem look like a block of Swiss cheese. A slightly longer 53mm reach and a recessed topcap for a flush fit with the Patrol forks, make this stem the perfect crown jewel of the Patrol line. - 6061-T6 alloy, full CNC machined - Wider 47.5mm faceplate to prevent bar slip