Add to favorites
CNC 1-1/8" Bike Headset 34mm 44mm 41.8-52mm 44-55mm 44-56mm, Bicycle Headset Threadless Straight Tapered Tube Double Sealed Bearings Headset for Mountain Bike/MTB/BMX Road Bike. (universal-44-56mm) by CNC - Used condition

CNC 1-1/8" Bike Headset 34mm 44mm 41.8-52mm 44-55mm 44-56mm, Bicycle Headset Threadless Straight Tapered Tube Double Sealed Bearings Headset for Mountain Bike/MTB/BMX Road Bike. (universal-44-56mm) — Open-Box, 13% Off

Brand: CNC

Condition: Used - Mint
$1567
$1799
-13% Save $232
Updated: 40 days ago

Description

Applicable: 1 1/8" headset for classic bicycle fork, threadless,sealed bearings, precise construction for stable steering connections on bicycle, MTB, BMX, road, mountain bike. Much better sealing and smooth operation. Specification: Ahead headset 1 1/8, semi-integrated headset; Applicable frame head tube inner diameter: ZS 34mm/44mm/41.8-52mm/44-55mm/44-56mm; Applicable fork upper outer diameter: 28.6mm, lower outer diameter: 30mm or 39.8mm. For Straight fork or 1-1/8”to 1-1/2”Tapered Fork. Double Purpose Corrosion Resistance Taper Headset.Please refer specifically to the attached drawing. Performance: CNC machined, The built-in ball bearings come pre-lubricated from the factory, allowing for smooth and controllable steering.. This is especially beneficial for vintage bicycles, which often require sensitive handling. The combination of precise bearing guidance and solid processing significantly improves the overall stability of the steering system. Material: Forged 6061-T6 aluminum alloy, wear-resistant and durable, CNC precision machined, with strong sealing, responsive steering, and high operability,Extend service life.The first choice for bike headset replacement parts. Main Reminder: Before purchasing, please check the attached image. First confirm the frame head tube size, then confirm the upper and lower fork outer diameters (straight or tapered) and choose the correct specification. If you have any questions, contact us in time, and we will provide a perfect response.

Specifications:
Material: Top cap and bearings made of 6061-T6 aluminum alloy, screws and star nut made of steel.
Craftsmanship: CNC machining, engraved pattern.
Model: Semi-integrated.

Specific model description:
ZS 34mm: Frame headset tube: upper inner diameter 34 mm, lower inner diameter 34 mm; suitable for straight fork.
Suitable for front fork: upper outer diameter of the fork: 28.6mm, lower outer diameter: 30mm.
ZS 44mm: Frame headset tube: upper inner diameter 44 mm, lower inner diameter 44 mm; suitable for straight fork.
Suitable for front fork: upper outer diameter of the fork: 28.6mm, lower outer diameter: 30mm.
ZS44/ZS44mm: Frame headset tube: upper inner diameter 44 mm, lower inner diameter 44 mm; suitable for straight fork.
Suitable for front fork: upper outer diameter of the fork: 28.6mm, lower outer diameter: 39.8mm.
ZS41.8-52mm: Frame headset tube: upper inner diameter 41.8 mm, lower inner diameter 52 mm; suitable for straight/tapered fork.
Suitable for front fork: straight tube; upper outer diameter of the fork: 28.6mm, lower outer diameter: 30mm or 39.8mm.
ZS 44-56mm: Frame headset tube: upper inner diameter 44 mm, lower inner diameter 56 mm; suitable for straight/tapered fork.
Suitable for front fork: straight tube; upper outer diameter of the fork: 28.6mm, lower outer diameter: 30mm or 39.8mm.

Note:
The core of the entire installation process is 'bottom-up'.
First, confirm the frame headset tube size, then confirm the upper and lower outer diameter of the fork (straight or tapered) and choose the correct specification.
If you have any questions, please contact us in time, and we will respond within 24 hours!

Sold by

Amazon Warehouse

Verified Retailer

Official Amazon outlet for open-box & returned items

  • Backed by Amazon's A-to-Z Guarantee
  • 30-day return policy
  • Ships from Amazon fulfillment centers
  • Price verified on Amazon

Product Details

SKU:
awhd-us-b09cm58s9w
Model:
20210814003
Country:
US
ASIN:
B09CM58S9W

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $2 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for CNC products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.

More open-box deals

Updated daily from Amazon, Reebelo, and Dyson.

Sign in to save items

Save favorites and get alerts when prices drop.

or

We'll email you a link to sign in instantly — no password needed.