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
OCLV Carbon construction of the XXX Blendr stem combines lightweight strength with a classy aesthetic. Captured titanium hardware ensures you never drop bolts again, and the dual-banded faceplate shaves weight and blends perfectly into mounted accessories with the Blendr integration system. - 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
$170.00 - $175.00
Chromag's BZA 35 stem is strong, light, and burly. Featuring a 35mm bar/stem interface and weighing a perfect 165 grams this stem is light yet extremely stiff for positive control. - CNC profiling - Weight: 165g (50mm length)
3T's MTB Stem is tailored for the rigors of mountain biking, from XC to enduro. A wide stem clamp and squared-off stem body result in exceptional resistance to torsional and bending loads. Built of stiff aluminum and outfitted with titanium Torx bolts, the MTB stem is robust, stiff, and durable.
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
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.
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)
- 3D forged alloy construction - Fits 1-1/8-inch (28.6mm) steerer forks - Fits 25.4mm handlebar clamp - M6 Black hardware - Weight: 161g (110mm)
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.
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
For 56 years, 3T products have offered a combination of Italian elegance and performance. The Apto once again combines both with a beautiful shape and a lightweight, stiff and strong structure. The reversed bolts clean up the faceplate, while their wide spacing increases the connection to the handlebars. Its double steerer bolts (Titanium in case of the TEAM version) securely hold the stem in place.
$90.99 - $114.99
All Mountain strength and stiffness, tuned for the trail! Spank Industries' OOZY Trail Stem offers all the performance and confidence of gravity stem models, in a highly weight sensitive, trail-tuned geometry package. 3D forged and CNC weight optimized, the OOZY Trail stem comes in three popular lengths, with an ultra-short stack height and true zero-degree rise. Chamfered bar clamps reduce stress risers in the critical bar/stem interface, and an ultra-light spacer and sealed top-cap (included) make setup a breeze. The OOZY Trail Stem's characteristic hourglass profile and wide stance enhance torsional stiffness and integrate beautifully with modern frame designs. Weight, performance, aesthetics and great value — the OOZY Trail Stem has it all. - Material: 3D Forged MGR Alloy, CNC Weight Optimized - Length (mm): 50 / 65 / 75 - Rise: 0° - Diameter (mm): 31.8 - Stack height (mm): 35 - Weight (g): ±150 (50mm) / ±170 (65mm) / ±180 (75mm) - Finish: polish anodized, CNC/decal logos - Colors: black / red / blue / green / chrome
The Koryak Di2 stem is ideal for AM, Trail, and XC. It's 3D forged with AL-7075 aluminum for a strong and lightweight stem, and has a headlock system for a secure front clamp fixation. The Koryak stem is ready to hit the trail.
the Pro LT stem is constructed of strong and lightweight anodized 6061 alloy, and features a headlock system for a secure front clamp fixation.
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
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.
- 3D forged AL-2014 construction - Sizes: 50 - 130mm, 10 deg. angle - Suitable for 1-1/8" forks - Diameter handlebar clamp: 31.8mm - Headlock system for a secure front clamp fixation
The Pro FRS stem is constructed of 3D forged AL6061-T6 aluminum for ultimate strength, providing supreme confidence and control on the slopes.
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
3D forged 6061-T6 Aluminum. - Excellent value and performance - A great way to try a few different stem lengths to dial in fit - Sand-blasted black finish - 0 degree - 1-1/8" steerer, 31.8mm bar clamp - 135 grams (55mm)
$20.00 - $35.00
Lightweight and strong forged alloy stem. - Adjustable between 0 and +60 - Removable face plate for easy installation
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
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
$19.99 - $24.98
Key features: - Blendr works with this simple formula: Stem + Base + Mount. Add accessory. - Bases for use with Bontrager XXX Blendr stem - Add any XXX accessory mount (sold seperately) for an elegant, integrated look
Profile's Aris OS stem is a no-nonsense stem made from 6061-aluminum that's been shot peened and anodized for strength and durability. The 4-bolt faceplate is stiff, ultra tough and makes handlebar changes a breeze. And, the opposing-bolt steerer clamp is safe and secure.
Named after the multiple headed serpent from Greek mythology, the Hydra stem really is a beast of many heads. Available in three rise options and utilizing shark tooth clamping inside the stem body to provide a vice like grip, the Hydra is one stem that won't be letting your bars slip any time soon. - Available in 22.2mm and oversized 25.4mm clamp options - Material: 6061-T6 alloy, fully CNC machined - Wider 48mm faceplate for extra grip Please Note: The 25.4mm Hydra stem is only compatible with 25.4mm bore handlebars, including the 25.4mm WTP BUCK and Mad Max bars.
$115.99 - $124.99
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.
- 3D forged alloy construction - Fits 1-1/8-inch (28.6mm) steerer forks - Fits 31.8mm handlebar clamp - Heat treated hardware - Weight: 152g (100mm)
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