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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
Promax PI-1 Alloy Sealed Bearing 1" Press in Headset BlackThe PI 1 Alloy 4545 headset has an aluminum top cap, upper bearing cover, lower race and upper and lower cups. All aluminum construction results in a lightweight headset. Each headset is fitted with super smooth rolling, precision, 4545 angular contact sealed bearings. Because this versatile headset has 4545 angular contact bearings, you can use the included cups and install it in standard frames. Or, leave the cup in the box, and use it as an
The PI-1 Alloy 45×45 headset has an aluminum top cap, upper bearing cover, lower race and upper and lower cups. All-aluminum construction results in a lightweight headset. Each headset is fitted with super-smooth rolling, precision, 45×45 angular-contact sealed bearings.- Because this versatile headset has 45×45 angular-contact bearings, you can use the included cups and install it in standard frames. Or, leave the cup in the box, and use it as an Integrated headset
Product Specifics
- Color: Black
- Lower Stack Height: 5.6
- Bearing Type: 45/45 Degree ACB
- Crown Race: 26
- Weight: 120
- Defined Color: Black
- Upper Stack Height: 8.2
- S.H.I.S Upper: EC30
- S.H.I.S. Stem Clamp Diameter: 25.4 Threadless
- S.H.I.S Lower: EC30
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: 657993126134
EAN: Not available
Manufacturer Part Number: PX-HS1300PI1-BK
HD3508
191728-Q0-L
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Well Made and Fits Good
Size: 16x25x1
This filter seems to be the best made one that I've bought that I consider to be a good value, and I've bought many brands -- with the board frame beig the primary reason, but filter media is just as good and probably better too.
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Reviewed in the United States on May 11, 2026
★★★★★ 4
High Quality Air Filters
Size: 20x25x1
Great price for this 4 pack of filters! Fit true and have already helped increase airflow!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
★★★★★ 5
Quality and convenient four-pack
Size: 12x24x1
Exactly what I needed and love the idea that it comes in a four pack which makes it much more convenient when it's time to change my filters. They are quality made at a decent price. Will purchase again when needed!
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Great filter for dusty environments.
Size: 20x25x1
What a wonderful filter! Did a great job keeping this Arizona house dust down to a minimum. Yes, I will buy it again.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Good Filters
Size: 16x25x1
Good filters. Gets the job done and price was not bad either.
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Reviewed in the United States on May 18, 2026