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- USA
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Promax EX-1 Alloy external Sealed Bottom Bracket 68/73mm BlackEX 1 External bottom brackets feature cold forged and CNC machined alloy cups, dual labyrinth bearing covers and precision sealed bearings. They are the perfect match to Promax CF 2 and HF 2 cranks and ultimate upgrade to the budget BBs sold with most crank sets. Fits all 24 millimeter bottom bracket spindles and frames with 68 or 73 x BC1. 37 bottom bracket shells Product Specifics Bottom Bracket Shell I. D.: 1. 37 BB Frame Interface: English BB
EX-1 External bottom brackets feature cold-forged and CNC-machined alloy cups, dual-labyrinth bearing covers and precision sealed bearings. They are the perfect match to Promax CF-2 and HF-2 cranks and ultimate upgrade to the budget BBs sold with most crank sets.- Fits all 24-millimeter bottom bracket spindles and frames with 68 or 73 x BC1.37” bottom bracket shells
Product Specifics
- Bottom Bracket Shell I.D.: 1.37
- BB/Frame Interface: English
- BB Shell Width (mm): 68
- BB Shell Width (mm): 73
- Weight: 102.9
- Spindle Interface Type: Shimano Hollowtech II
- Spindle Interface Type: FSA MegaExo
- Spindle Interface Type: FSA MegaExo Light
- Spindle Interface Type: RaceFace EXI
- Defined Color: Black
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: 657993125984
EAN: Not available
Manufacturer Part Number: PX-BB13000EX-BK
CR3550
191724-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
4.0 ★★★★★
Based on 640 reviews
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Product Reviews
★★★★★ 1
It doesn’t stay in
The pipe keeps coming out. Not worth the money. Not sturdy to hold a top table.
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Reviewed in the United States on February 20, 2024
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly.
Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration.
Ended up running self tapping screws thru parts to complete assembly.
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Reviewed in the United States on February 26, 2024
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Stable and easy to assemble
I used these to support a heavy piece of countertop would to create a side table. Looks great and holds steady.
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Reviewed in the United States on February 15, 2023
★★★★★ 5
Great
All pieces cut to perfection, went together perfectly
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Reviewed in the United States on October 22, 2023