FSA TH-855 Repair Headsets

Repair-level headset. Forged steel cups. Nylon top cover.

Item Specifications: Color, Black, Weight, 134, Crown Race, 30, Bearing Type, Cup and Cone, Defined Color, Black, S.H.I.S Upper, EC34, S.H.I.S Lower, EC34, S.H.I.S. Stem Clamp Diameter, 28.6 Threadless, Lower Stack Height, 11, Upper Stack Height, 15,

Full Speed Ahead TH-855 1-1/8" Black Threadless Headset with Forged Steel Cups

Reference Number: 5S83O1

Upgrade your bike's steering precision with the Full Speed Ahead TH-855 1-1/8" Black Threadless Headset - engineered for durability, performance, and seamless compatibility. Crafted with forged steel cups and caged 5/32" ball bearings, this repair-level headset ensures smooth handling and long-lasting reliability for all your cycling adventures.

Materials & Construction:

Built from high-quality forged steel, the TH-855 headset guarantees excellent strength and resistance to wear under demanding riding conditions. The black anodized finish not only enhances aesthetic appeal but also provides added corrosion resistance for longevity in various weather environments. The inclusion of a nylon top cover reduces noise and protects internal components, contributing to a quieter ride.

Performance & Engineering:

Designed for optimal performance, this headset features precision cup and cone bearing technology with caged 5/32" ball bearings that deliver consistent, smooth steering. Its external cup design simplifies installation and maintenance, making it perfect for repair shops and DIY enthusiasts seeking reliable, low-maintenance components. The 14.9mm/11mm stack height adjustment accommodates a variety of fork and frame configurations, ensuring optimal headset fit and stability.

Components & Technology:

Equipped with standard EC34/28.6/EC34/30 S.H.I.S. sizes, the TH-855 is compatible with a wide range of modern bicycles, including road, mountain, and hybrid bikes. The crown race size of 30mm guarantees a secure fit for most fork crowns. Its lightweight design (126g) contributes to overall bike efficiency without adding unnecessary weight.

Style & Use Case:

With its sleek black finish, the Full Speed Ahead TH-855 headset offers a professional aesthetic ideal for performance-oriented cyclists and bike builders alike. Designed for external cup, threadless systems, it excels in providing smooth, responsive steering for competitive racing, casual riding, or commuting. Whether upgrading an existing bike or restoring one to factory specifications, this headset offers a perfect blend of style and performance.

Innovative & Differentiating Features:

- Forged steel cups for enhanced durability and durability

- Caged 5/32" ball bearings for consistent, low-friction steering

- Nylon top cover reduces noise and protects internal components

- External cup, repair-level design simplifies maintenance

- Compatible with a wide range of bike frames thanks to versatile SHIS standards

Enhance your bike's handling and ride quality with the Full Speed Ahead TH-855 1-1/8" Black Threadless Headset - the ideal choice for cyclists seeking dependable performance and enduring craftsmanship. Order now and experience smooth, responsive steering on every ride!

  • High-quality, durable forged steel cups ensure long-lasting performance and reliable steering smoothness.
  • Designed with caged 5/32" stainless steel ball bearings for Category-Performance Engineering and minimal maintenance, making it ideal for repair-level headsets.
  • Features a lightweight yet robust alloy top cover with nylon reinforcement, combining style and corrosion resistance for a sleek black finish.
  • Compatible with 1-1/8" traditional external cup head tube systems, optimized for mountain and road bikes using EC34/S.H.I.S. standards.
  • Innovative engineering with a compact lower stack height of just 11mm and accurate crown race seating (30mm), enhancing bike handling and steering precision.
Item Specifications
ColorBlack
Lower Stack Height11
Bearing TypeCup and Cone
Crown Race30
Weight134
Defined ColorBlack
Upper Stack Height15
S.H.I.S UpperEC34
S.H.I.S. Stem Clamp Diameter28.6 Threadless
S.H.I.S LowerEC34
S.H.I.S. Stem Clamp DiameterEC34/28.6 / EC34/30
ColorBlack
Model NameTH-855
Weight126g
Stack14.9mm/11mm

Why 365 Cycles?

365 Cycles is an Authorized Full Speed Ahead Dealer, and we offer the Full Full Speed Ahead Warranty!

Fast Shipping!

Professional Customer Service- available 7 days a week
Check out our 200,000+ amazing reviews!

365 Cycles delivers all your cycling needs fast! We don't waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us.

At 365 Cycles our mission is to simplify the shopping experience. We want to get you the right product in a quick time frame and be here if you need help with questions, warranty, friend to talk to, etc.

We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home.





Shipping & Handling

Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.

Please allow 1-2 business days for your order tracking to update.

  • Cut off for SAME DAY SHIPPING- 1:30 pm EST Monday - Friday
  • Friday afternoon -Sunday orders ship the following Monday
  • Due to carrier restrictions orders shipped to: PO Box, HI, AK, & PR 365 Cycles may use a comparable service to what was selected.

Combined Shipping Discounts

To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.

  1. Be sure you are using the US site: https://www.ebay.com
  2. Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
  3. Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
  4. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
  5. You’ll need to change the shipping method to Priority on every item in your cart before the rate can be calculated.

Returns

365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.

Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.

Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.

If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!

Exchanges

If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.



HD8520 .

Company Details

365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States

Connect With Us

Sign up for news, special offers & other good stuff!