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Stems
Bike World Iowa has a stem with the fit, performance, and style you're looking for.

$65.00
Good looks and great design are abundant in 3T's ARX Pro stem. It's made of forged aluminum for light weight and excellent stiffness. Refined shaping of the clamping areas results in outstanding stress distribution on the bars and steerer for safety. Plus, it features 3T's secure 4-bolt faceplate.

$54.99
The Box Two Front Top is a modern 1-1/8 inch by 22.2mm stem designed specifically for BMX racing. Box Two Top Load stem bodies are cold-forged and CNC-machined from the highest quality 6061-T6 aluminum. The lightweight front clamps are cold-forged and CNC-machined for increased stiffness and strength.
-Material: 6061-T6 Aluminum
-Process: Cold-Forged
-Hardware: Chromoly Clamping Bolts
-Finish: Anodized w/Laser-Etched Graphics
Weight:
-48mm: 234 g / 8.3 oz
-53mm: 240 g / 8.5 oz

$54.99
The Box Two Front Load is a modern, 22.2 stem designed specifically for BMX racing. Box Two Front Load stem bodies are cold-forged and CNC-machined from the highest quality 6061-T6 aluminum. The lightweight front clamps are cold-forged and CNC-machined for increased stiffness and strength.
-Material: 6061-T6 Aluminum
-Process: Cold-Forged
-Hardware: Chromoly Clamping Bolts
-Finish: Anodized w/Laser-Etched Graphics
Weight:
· 48mm: 224 g / 7.9 oz
· 53mm: 230 g / 8.1 oz

$69.99
All Box stems are engineered and crafted using our Oversized Technology. As we follow the load paths down the handlebars we have focused our attention on the stem-to-bar interface. Since the Oversized handlebars have an increased wall thickness and tube diameter in this sector we have reciprocated with an augmented stem interface with greater surface area. We’ve done this by moving material from low stress areas. This has greatly minimized twist and contributed to responsiveness. As the stem in mated with the handlebars we have contributed to increased pedaling stiffness by providing a backstop to the “lifting” phenomenon. There is no point pushing hard on your pedals if you can’t pull up on your handlebars and deliver that power. Power can easily be lost to handlebar-to-stem deflection and the consequences can be poor power delivery and steering control. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency.
Key differences: This particular model stem pushes our Oversized Technology to the extreme as it maximizes the shift of material from low stress zones to the Oversized interface. These stems are engineered for the smaller-sized racers.
-Lightweight 3D Hollow Design
-Front-Load Clamp Design to Fight Pull-Up Forces
-Large Bar Bore
-Large Hollow Clamping Bolts
-Superior Strength

$69.99
All Box stems are engineered and crafted using our Oversized Technology. As we follow the load paths down the handlebars we have focused our attention on the stem-to-bar interface. Since the Oversized handlebars have an increased wall thickness and tube diameter in this sector we have reciprocated with an augmented stem interface with greater surface area. We’ve done this by moving material from low stress areas. This has greatly minimized twist and contributed to responsiveness. As the stem in mated with the handlebars we have contributed to increased pedaling stiffness by providing a backstop to the “lifting” phenomenon. There is no point pushing hard on your pedals if you can’t pull up on your handlebars and deliver that power. Power can easily be lost to handlebar-to-stem deflection and the consequences can be poor power delivery and steering control. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency.
Key differences: In this particular model stem we’ve modulated the Oversized formula to emphasize pedaling stiffness. We have transferred material specifically to sectors that experience sudden stress from pulling up on the handlebars. You’ll feel a difference in your acceleration. These stems are engineered for the larger-sized racers.
-Material: 6061-T6 Aluminum
-Process: Cold-Forged
-Hardware: Chromoly Clamping Bolts
-Finish: Anodized w/Laser-Etched Graphics
Weight:
-48mm: 280 g / 9.8 oz
-53mm: 290 g / 10.2 oz

$69.99
All Box stems are engineered and crafted using our Oversized Technology. As we follow the load paths down the handlebars we have focused our attention on the stem-to-bar interface. Since the Oversized handlebars have an increased wall thickness and tube diameter in this sector we have reciprocated with an augmented stem interface with greater surface area. We’ve done this by moving material from low stress areas. This has greatly minimized twist and contributed to responsiveness. As the stem in mated with the handlebars we have contributed to increased pedaling stiffness by providing a backstop to the “lifting” phenomenon. There is no point pushing hard on your pedals if you can’t pull up on your handlebars and deliver that power. Power can easily be lost to handlebar-to-stem deflection and the consequences can be poor power delivery and steering control. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency.
Key differences: In this particular model stem we’ve tailored the Oversized strategy to favor utility and access. The geometry has been altered to allow for easy handlebar removal while at the same time scavenging material from low stress zones. Ideal for those who don’t want to compromise on user experience to gain performance. These stems are engineered for the larger-sized racers.

$79.99 - $99.99
Hollow stems are cold forged from the highest quality 6061-T6 aluminum available. Featuring an open skeletal design and a dual mid-bolt wedge mounting system, they are lightweight yet maintain a very high level of strength. A 53mm extension stem weighs just 218 grams/7.7 ounces. By removing the rear pinch bolts and moving the mounting bolts to the middle of the stem, we reduced the weight and size and eliminated a serious hazard to the rider’s knees.
These stems come with either a 48- or 53mm extension and a 22.2mm bar bore. To ensure proper clamping force, the stem must be mounted on a fork with at least 45mm of exposed steerer tube. Not compatible with forks that have carbon fiber steerer tubes.

$23.99
This BMX quill stem combines a steel rod with an alloy top. The 4-bolt top clamp securely fastens handlebars.

$35.99
The DefendR BMX threadless stem has a AL6061 forged alloy construction and a 4-bolt face clamp.
- 30mm stack height
- 240g

$37.99
With its alloy/steel construction and 4-bolt clamp design, the MX is a trusty BMX quill stem.
- Quill Length: 4-1/4-inches
- Quill diameter: 21.1mm

$39.99
With its alloy/steel construction and 4-bolt clamp design, the Freestyle is a trusty BMX quill stem.
- Hollow-core stem bolt
- Quill Length: 4-1/4-inches
- Quill diameter: 21.1mm

$41.99
The BrickTop alloy stem is a classic style, top-mount BMX stem with a 4-bolt handlebar clamp.

Trim some weight and add some style to your ride with Bontrager's Race X Lite OS 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.

Fly faster with Bontrager's XXX Carbon Road Stem. The carbon construction is strong enough to handle the torque from 1,800-watt road sprints. With a 4-bolt faceplate and angled steer clamp, the XXX stem distributes clamping loads evenly so its safe on ultra-lightweight carbon bars and steerers. This stem's feathery weight ensures your bike is that much lighter when the road tilts skyward and its carbon construction cuts down on road vibration so you never get numb hands. Plus, Bontrager carbon spacers and topcap are included.

The XXX Stem is still our lightest carbon fiber stem, but it's been redesigned with the new CnD shape profile for a more controlled and forgiving ride experience, providing you with consistent comfort to the Nth degree.
- Seamless accessory integration with Blendr XXX
- CnD shape profile increases torsional stiffness and vertical compliance
- Double-barrel, single-bolt (M6) system clamps evenly and conveniently
- 4-bolt dual band clamp securely holds handlebar
- Uses high-quality M5 titanium face plate bolts with 5.2Nm torque spec
- Safe for use with carbon and alloy steerer tubes and handlebars
- Suitable for road or mountain use

$14.99 - $19.99
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

$29.99
Bontrager's SSR 4-Bolt Stem is made of forged 6000 aluminum for awesome strength. The 4-bolt faceplate makes it super easy to install and distributes the clamping force on your bars.

$30.99
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

$31.99
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

$41.99
Genuine replacement parts
Get back on the road with a genuine replacement stem.
For optimal adjustability.
- High-quality alloy adjustable stem is compatible with threadless forks
- Features 64-degree angular adjustment for a wide range of fit needs
- 4-bolt dual band clamp retains stiffness and reduces weight
- Blendr ready for seamless accessory integration
- Compatible with Blendr Comp & Legacy Elite bases and mounts, sold separately
- Other parts are required to install this on a bike, you will be prompted to add the appropriate parts to your cart along with this item

$41.99
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

$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;

$63.99
Genuine replacement parts
Get back on the road with a genuine replacement stem
For optimal adjustability.
- Bontrager adjustable stems
- Available in several lengths
- Includes M6 x 40mm bolt

$64.98 - $64.99
Stiff and light with the cleanest accessory solutions available
When all you need is the right position, the Elite stem gets it done and more. The strong and light alloy stem is your bike's best workhorse and also features Blendr accessory integration for a sleek setup.
Key features
- Seamless accessory integration with Blendr Elite
- 6061-T6, 3D, forged alloy construction
- 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
- Safe for use on carbon steerer tubes and handlebars
- Includes one Blendr base to integrate Ion lights and Trip computers.

$67.98 - $67.99
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

$89.99
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.

$91.99
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

$99.99
A lightweight, all-mountain stem with the burly attitude of a billy goat to tackle everything the mountain throws your way.
All-mountain tough. XC light. No compromise.
Bashing through rock gardens and nailing big hits puts incredible strain on a mountain bike stem. Luckily the super stiff, torsion-resistant body and wide faceplate of the Rhythm Pro stem is XC light and all-mountain tough ,providing you with more control of the trail.
- 7050-T6, 3D, forged alloy construction
- Wide, 4-bolt, alloy handlebar clamp
- Opposing 2-bolt steerer tube clamp
- Corrosion-resistant steel bolts
- Designed for aggressive technical trail riding, but suitable for road or mountain use
- Not for use on carbon steerer tubes
- Safe for use on carbon handlebars
- Go green and save green – Zero packaging means zero waste and zero extra cost

$114.99
Light and stiff alloy stem, with Blendr accessory integration that is at home on the road or mountain bike.
The smarter upgrade
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
- 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
- Go green and save green - Zero packaging means zero waste and zero extra cost
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