Skip to content

BSA30 Bottom Bracket

Marsoni M251S
Sale price$4249.50
Pay 4 payments of $1062.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
BSA30 Bottom BracketBSA comes from British Standard Cycle, aka English threading. English threading on road bikes means a 68mm wide, 34mm inside diameter shell with reverse threading on the drive side. Its the most common threaded standard employed today. This kit allows you to fit 30mm thru axle cranks, like those from Rotor, to fit in the tight space of this 34mm spindle. Choose between two bearings for the cups. Standard Bearings have low drag thanks to hardened steel
Easy Shipping

Quick Dispatch:

Your BSA30 Bottom Bracket orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your BSA30 Bottom Bracket ships.

Need Help?
Questions about BSA30 Bottom Bracket, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for BSA30 Bottom Bracket in your area.

Get Shipping Estimates

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
4.6 ★★★★★
Based on 1209 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Clara
Belleville, US
★★★★★ 5
Bonito
Tal como la imagen
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
K
Verified Purchase
Kody
Whiting, US
★★★★★ 1
Bad quality overall
Terrible quality, has melted plastic, does not fit at all. Please avoid this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 31, 2025
L
Verified Purchase
Leo I.
Fort Morgan, US
★★★★★ 5
Clean
Look really clean I just need the side markers now
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2024
G
Verified Purchase
Giovany Gil
New York, US
★★★★★ 2
Won’t fit like oem
It doesn’t fit well and had to modify it to get it as close as possible
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026
M
Verified Purchase
Miguel R.
Omaha, US
★★★★★ 5
Look good :)
Style: Gloss Black Double Slats, Size: F30(2012-2018)
Good fitment, looks nice. The grill is easier to remove using a pick tool, no need to remove the bumper.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 20, 2025

recommand products