About The Product
- Lightweight and strong duraluminum light alloy construction
- Fully sealed mechanism
Upgrade your bike's steering system with the Tange-Seiki Terious DX4 Headset - EC34/28.6 Upper | EC34/30 Lower. Crafted from high-quality Dulaluminum, this lightweight and durable headset offers optimal performance and long-lasting reliability for serious cyclists and bike enthusiasts. Designed for 1-1/8" straight steer tubes and compatible with EC34 head tubes, it ensures a smooth, responsive ride whether you're commuting, racing, or hitting the trails.
Materials & Engineering:
Constructed from precision-machined Dulaluminum alloy, the Terious DX4 Headset combines strength and lightweight performance. The fully sealed mechanism features #800 caged ball bearings, shielding the internal components from dirt, water, and contaminants to extend service life and maintain optimal performance over time.
Components & Technology:
Equipped with a sealed bearing system, this headset ensures consistent handling and reduces maintenance needs. The EC34/28.6 upper and EC34/30 lower bearing cups ensure a secure fit within your head tube, offering 13.9mm upper stack height and 11.6mm lower stack height, with a total stack of 25.5mm for a sleek, streamlined setup. The precision-machined crown race, sized at 30mm, supports seamless steering and responsive handling.
Style & Use Case:
Finished in a sleek black anodized finish, the Tange-Seiki Terious DX4 Headset adds a professional look to any bike while delivering high performance. Perfect for road bikes, mountain bikes, and commuter cycles, it's an ideal upgrade for riders seeking reliability, smooth steering, and a lightweight profile for competitive riding or everyday commuting.
Innovative & Differentiating Features:
- Fully sealed, dust-proof mechanism for increased longevity and reduced maintenance
- High-grade Dulaluminum construction for strength-to-weight optimization
- Compatible with standard EC34/28.6 and EC34/30 head tubes for versatile installation
- Compatible with 1-1/8" straight steer tubes, suitable for multiple bicycle styles
- Stylish, durable black finish to complement any bike aesthetic
Optimize your bike's handling with the Tange-Seiki Terious DX4 Headset - engineered for performance, engineered for durability. Whether upgrading your race bike or your daily commuter, experience smoother steering and the peace of mind that comes with proven engineering and innovative design.
- High-quality, keyword-rich, and SEO-friendly bullets for the Tange-Seiki Terious DX4 Headset - EC34/28.6 Upper | EC34/30 Lower, Straight, Black:
- Precisely engineered with lightweight yet durable Dulaluminum construction, the Tange-Seiki Terious DX4 headset offers exceptional strength and corrosion resistance for long-lasting performance on road and mountain bikes.
- Equipped with fully sealed #800 bearings, this headset ensures smooth, noise-free steering and reduces maintenance needs by preventing dirt, water, and contamination from entering critical components.
- Optimized for 1-1/8 inch straight steer tube forks and 34mm straight head tubes, the EC34/28.6/EC34/30 design provides a universal fit for a wide range of bike frames, enhancing compatibility and upgrade options.
- Featuring innovative sealed mechanism technology, the DX4 headset delivers reliable performance in all weather conditions, making it ideal for aggressive riding, commuting, and off-road adventures.
- Sleek black anodized finish not only enhances the aesthetic appeal of your bike but also provides additional coating protection against scratches and corrosion, ensuring a stylish look with durable function in any riding environment.
| Specification | Value |
|---|---|
| Manufacturer | TANGE |
| Manufacturer Part No. | 4384 |
| Universal Product Code | 4580087250803 |
| Invoice Description | HEADSET TANGE TDLS TERIOUS DX4 1-1/8 BK |
| Shipping Weight | 0.28 lbs. |
| Package Dimensions | 1.95 x 1.9 x 2.5 |
| HTS Number | 8714.99.8000 |
| Country of Origin | JAPAN |
| SHIS | EC34/28.6|EC34/30 |
| Color | Black |
| Steerer OD | 1-1/8" |
| Cup | 34 |
| Race | 30 |
| Stack Height | 25.5 |
| Size | 1-1/8" |
- 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
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Storefront name: Bike Junkies
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Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
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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
