ORIGIN8

Origin8 Pro Fit 4-Bolt MTB Quill Stem 31.8mm 25 Aluminum 570415

$44.99
In Stock
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SKU:
570415
UPC:
888571119785
Condition:
New
Shipping:
Free Shipping (2-3 Business Days)
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About The Product

  • Forged AL6061-T6 alloy construction
  • 31.8mm clamp diameter
  • 4-bolt faceplate
  • 25.4mm x 180mm length quill for 1-1/8" threaded forks
  • Matte finish with laser etched graphics
  • ISO-Mountain safety certified

Boost Your Mountain Biking Performance with the Origin8 Pro Fit 4-Bolt MTB Quill Stem (31.8 mm, 110 mm, 25 ) - Black

Enhance your mountain bike's handling and control with the premium Origin8 Pro Fit 4-Bolt MTB Quill Stem. Crafted from durable, high-quality AL6061-T6 aluminum, this stem offers a perfect blend of strength, lightweight performance, and reliability for aggressive trail riding and technical terrain.

Materials & Engineering Excellence

Constructed from forged AL6061-T6 aluminum, the Origin8 Pro Fit stem provides exceptional durability and fatigue resistance, ensuring longevity even under intense riding conditions. Its precision-machined surfaces and laser-etched graphics add a sleek, professional aesthetic to your mountain bike setup.

Performance & Components

Designed for 1-1/8 threaded forks, this stem features a 180mm quill length and a 25 angle, providing an optimal riding position for both comfort and agility. The 31.8mm bar clamp diameter allows compatibility with a wide range of handlebars, and the robust 4-bolt faceplate ensures secure bar clamping, minimizing slippage during aggressive riding.

Innovative Features & Safety Certification

The ISO-Mountain safety certification underscores its compliance with rigorous safety standards, giving you confidence in its reliable performance on challenging trails. Its matte finish with laser-etched graphics not only offers an attractive look but also helps resist scratches and fingerprints, maintaining a sleek appearance over time.

Style & Use Case

Ideal for mountain bikers seeking precise steering and reliable control, this quill stem is perfect for downhill, enduro, trail riding, and rugged adventure scenarios. Its sleek black aesthetics seamlessly blend with any bike setup, enhancing your bike's style and performance.

Key Specifications:

- Material: AL6061-T6 forged aluminum

- Steerer Tube Compatibility: 1-1/8 threaded forks (180mm length)

- Bar Clamp Diameter: 31.8mm

- Handlebar Rise & Angle: 25

- Length: 110mm

- Finish: Matte with laser-etched graphics

- Safety Certification: ISO-Mountain certified

Upgrade your mountain bike with the Origin8 Pro Fit 4-Bolt MTB Quill Stem - engineered for durability, control, and style in every ride. Whether conquering steep climbs or technical descents, trust this proven component to elevate your MTB experience.

  • High-strength forged AL6061-T6 alloy construction ensures durable performance and reliable handling on rugged mountain trails.
  • Designed with a 25 rise angle and 110mm length, this MTB quill stem offers optimal riding ergonomics and control for aggressive trail riding and technical terrain.
  • Features a secure 4-bolt faceplate and 31.8mm clamp diameter, providing superior clamping force, vibration dampening, and compatibility with modern mountain bike handlebars.
  • The matte black finish with laser-etched graphics adds a sleek, professional look to your mountain bike while resisting scratches and corrosion for long-lasting style.
  • ISO-Mountain safety certified, this MTB stem meets rigorous industry standards for safety, performance, and reliability in demanding off-road conditions.
SpecificationValue
ManufacturerORIGIN8
Universal Product Code888571119785
Invoice DescriptionSTEM OR8 PRO FIT QUILL-4 180x25.4x110x31.8 BK
Shipping Weight0.86 lbs.
Package Dimensions10.55 x 6.85 x 1.9
HTS Number8714.99.6000
Country of OriginTAIWAN
TypeMTB
Fork Dia25.4
Length110
Bar Clamp31.8
Angle25°
ColorBlack
MaterialAL6061
Steerer180mm
Fork1-1/8"
Supplier:
JBI
MAP:
Yes

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:

  • The item must be in new, unused, and uninstalled condition.

  • All original packaging, tags, hardware, and accessories must be included and intact.

  • Items showing wear, installation marks, damage, or improper use cannot be accepted.

  • 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:

  1. You will receive a Return Authorization email with instructions.

  2. Print the prepaid label provided by us. ($9.99 will be deducted from your refund)

  3. 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:

  • Electronics with opened packaging or broken manufacturer seals

  • Any part that has been installed or shows installation attempts

  • Tools or chemicals that have been opened or unsealed

  • 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:

  • Alaska

  • Hawaii

  • Puerto Rico

  • 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.

  • We cannot ship hazardous materials or oversized items to military addresses due to carrier and military mail restrictions.

  • 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