About The Product
- The KFX Stem is 3D forged and CNC-machined from AL2014 alloy that is then combined with a carbon structure using FSA CSI (Carbon Structural Integration) technology
- 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
- Titanium hardware
Experience superior handling and sleek performance with the Full Speed Ahead KFX ST Stem 31.8mm 70mm -12 in striking black aluminum and carbon construction. Crafted for serious mountain bikers, this high-performance MTB stem combines advanced materials, innovative engineering, and cutting-edge technology to optimize your trail and cross-country rides.
Premium Materials for Strength and Lightweight Efficiency
Built from durable AL2014 aluminum paired with high-quality carbon fiber, the KFX ST Stem strikes the perfect balance between strength and weight savings. CNC-machined for precise construction, this stem ensures longevity and consistent performance on demanding trail rides.
Optimized Performance & Engineering
Designed specifically for mountain biking, the 70mm reach offers optimal cockpit fit for a responsive riding experience. The -12 angle provides a low stack height, enhancing control and stability during aggressive trail riding and technical climbs. The precision CNC machining process guarantees reliable strength and exact fit, delivering confidence and handling precision with every ride.
Innovative Components & Technology
Featuring a 31.8mm clamp diameter, the KFX ST Stem is compatible with a wide range of handlebars, ensuring versatile upgrades for your MTB setup. The use of advanced alloy and carbon composites enhances vibration damping, reducing rider fatigue over long climbs and rough terrain.
Stylish Appearance & Versatile Use Case
Boasting a sleek black finish, this stem not only performs at a professional level but also complements your bike's aesthetic. Ideal for cross-country, trail, and all-mountain applications, the KFX ST Stem elevates your bike's cockpit with a clean, modern look while improving handling precision and control.
Key Features:
- 70mm reach for optimal trail fit
- -12 low stack angle for enhanced control
- CNC-machined AL2014 aluminum and carbon fiber construction
- 31.8mm bar clamp compatible with various handlebars
- Designed for high-performance mountain biking and cross-country riding
Upgrade your mountain bike's cockpit with the Full Speed Ahead KFX ST Stem-engineered for durability, lightweight efficiency, and superior handling on every trail. Perfect for riders seeking a responsive, reliable, and stylish stem that enhances overall ride quality.
- High-performance design with CNC-machined aluminum and carbon composite materials for optimal strength-to-weight ratio, ensuring durability on rugged mountain terrain.
- Engineered for MTB performance, the FSA KFX Stem features a -12 angled low-profile design that enhances control, responsiveness, and rider comfort during trail and cross-country rides.
- Built with precision CNC machining, this stem offers superior durability and consistent clamping force, reducing flex and improving steering accuracy in demanding off-road conditions.
- Stylish black anodized finish complements any mountain bike cockpit, while the 31.8mm clamp diameter provides a secure fit for a variety of handlebars, making it versatile for different mountain biking setups.
- Innovative trail-ready features include a 70mm reach for optimal cockpit fit and enhanced handling, making the FSA KFX Stem a top choice for serious trail riders seeking lightweight, reliable performance.
| Specification | Value |
|---|---|
| Manufacturer | FULL SPEED AHEAD |
| Manufacturer Part No. | 175-0042064030 |
| Universal Product Code | 840031066435 |
| Invoice Description | STEM FSA KFX ST 70mm -12d 31.8 BK |
| Shipping Weight | 0.66 lbs. |
| Package Dimensions | 8.8 x 4.3 x 3.2 |
| Country of Origin | TAIWAN |
| Type | Road |
| Fork Dia | 1-1/8" |
| Length | 70 |
| Bar Clamp | 31.8 |
| Angle | -12° |
| Color | Black |
| Material | AL2014/Carbon |
| Stack Height | 35 |
- Supplier:
- JBI
Bike Junkies offers no‑hassle returns and exchanges within 60 days of delivery. We want every customer to feel confident when shopping with us, and our return process is designed to be simple, fair, and fast.
Return Eligibility
To qualify for a return or exchange, the following conditions must be met:
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The item must be in new, unused, and uninstalled condition.
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All original packaging, tags, hardware, and accessories must be included and intact.
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Items showing wear, installation marks, damage, or improper use cannot be accepted.
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An order number is required.
Once your return is received at our warehouse, a refund will be issued within 5 days after inspection.
Refunds
Refunds are issued to the original form of payment once the returned item has been received and approved. If we are unable to refund to the original payment method, the refund will be issued as store credit.
Depending on your bank or credit card provider, it may take an additional 2–3 business days for the refund to appear in your account.
Exchanges
To make an exchange, simply complete the return process and then place a new order for the item you want instead. This ensures the replacement item is reserved and ships quickly.
How to Start a Return
To request a Return Authorization (RA#), contact us at support@bikejunkies.com. Please include your order number and the item you wish to return.
Once approved:
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You will receive a Return Authorization email with instructions.
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Print the prepaid label provided by us. ($9.99 will be deducted from your refund)
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Ship the item back within 7 days of the RA being issued as RA #'s are only valid for 7 days.
Please do not tape anything to the original product packaging. Place the item inside a proper shipping box. Using the manufacturer’s box as the shipping container will result in damage and the return may be rejected.
Be sure to keep your return tracking number. Powersport Junkies is not responsible for lost return shipments. You will receive a confirmation email once your return has been processed and refunded.
Defective, Incorrect, or Damaged Items
If you receive a defective, damaged, or incorrectly shipped item, contact us immediately. We will cover the return shipping cost and ensure the issue is resolved quickly.
Non‑Returnable Items
Certain items cannot be returned, including:
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Electronics with opened packaging or broken manufacturer seals
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Any part that has been installed or shows installation attempts
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Tools or chemicals that have been opened or unsealed
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Open‑box items with destroyed or missing packaging
Our Info
-
Storefront name: Bike Junkies
-
Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
-
Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
This Shipping Policy explains how orders are processed, handled, and delivered by Bike Junkies, including delivery timelines, shipping coverage, and special conditions for military addresses. It is designed to give customers a clear understanding of what to expect when placing an order.
Bike Junkies is proud to be an authorized dealer of the brands we currently offer. When you purchase from us, you are guaranteed to receive genuine, brand-new products backed by the full manufacturer warranty. We work directly with the manufacturers to ensure you receive the highest quality service and support.
Order Processing and Handling
Orders are processed quickly to ensure fast delivery. Our standard handling time is 0–1 business days. Order cutoff time is 12 PM PST Monday-Friday and orders placed after that will be shipped shipped next business day.
Transit Times
Once shipped, orders typically arrive within 2–3 business days. Transit times may vary slightly depending on the destination, weather conditions, or carrier-related delays. Delivery estimates apply only after the order has left our facility.
Delivery Schedule
Standard delivery occurs Monday through Friday. Saturday delivery may be available.
Shipping Coverage
Bike Junkies offers free shipping to the lower 48 states of the United States. We do not ship to the following locations:
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Alaska
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Hawaii
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Puerto Rico
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Any international destination outside the United States
Orders placed with shipping addresses in restricted locations will be canceled and refunded.
Military Shipping (APO/FPO)
Bike Junkies ships to APO/FPO military addresses using USPS only.
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We cannot ship hazardous materials or oversized items to military addresses due to carrier and military mail restrictions.
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Transit times to APO/FPO locations may vary significantly depending on military mail processing.
Address Accuracy and Delivery Issues
Customers are responsible for ensuring that all shipping information provided at checkout is accurate and complete. Bike Junkies is not responsible for delays, lost packages, or delivery failures caused by incorrect or incomplete addresses. If a package is returned due to an address error, additional shipping charges may apply to resend the order.
Lost, Delayed, or Damaged Shipments
If a shipment is delayed, lost, or arrives damaged, customers should contact us promptly so we can assist with initiating a claim or resolving the issue with the carrier. While we support the process, final decisions regarding claims are made by the carrier.
Tracking Information
A tracking number is provided via email once the shipping label has been created. Tracking updates may take up to 24 hours to appear after the label is generated.
Shipping Restrictions
Certain items may be subject to shipping restrictions due to size, weight, or hazardous material regulations. If an order cannot be shipped due to such restrictions, we will notify the customer to arrange an alternative solution.
Our Info
-
Storefront name: Bike Junkies
-
Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
-
Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
For warranty issues please contact us at support@bikejunkies.com. Each Brand is different and we can provide instruction to complete warranty issues.
Bike Junkies is proud to be an authorized dealer of the brands we currently offer. When you purchase from us, you are guaranteed to receive genuine, brand-new products backed by the full manufacturer warranty. We work directly with the manufacturers to ensure you receive the highest quality service and support.
Our Info
-
Storefront name: Bike Junkies
-
Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
-
Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
