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Bottom Bracket

julio 22, 2026

OLD SCHOOL BMX NEW YST AMERICAN BOTTOM BRACKET 130mm SPINDLE Square Taper crank

NEW unused classic old school design YST Loose ball bottom bracket with JIS standard square taper spindle ( Japan Industry Standard). 130mm (We also sell 122mm for narrow chainstay frames) width Will work with most standard 1980's old school 68mm American bottom bracket shell BMX frames and 3 piece cranks, such as Dura Ace, Maxy Cross, Sugino CT / GT, and many others, Will not work with oversize square taper cranks such as Sugino / Redline 400, DB Turbo, Haro Group 1, or GT Power Series. Don't hesitate to ask questions if you see something we left out. Any questions regarding restoration services or questions not related to items for sale by C4 should be directed to our site C4LabsPC.com
julio 22, 2026

YST Press Fit Threaded Intergrated Bottom Bracket SRAM GXP 86/92 BB-869N 41mm :)

YST Press Fit Threaded Intergrated Bottom Bracket SRAM GXP 86/92 BB-869N 41mm :)Great solution for those squeaky press fit bottom bracket bearings. No need for locktite, use this BB instead! Also works to repair frames with damaged threads, as its self threading, so you can resurrect that italian frame someone threaded a english BB into. INTEGRATED BB ( PRESS FIT BB )FOR 86 / 92 , OD 41SUIT FOR 24 MM & 22 MMSEAL BEARINGS, ALLOY. 2019 eBay Shine Awards Platinum Winner, 2018 Shine Awards top 3 charity runner up! We are a bike shop in Madison, WI, USA. Our sales have provided funding to give away over 13,000 bikes, divert 1000 tons from the landfill, and teach repair skills to over 7000 people. Free transportation makes a huge difference in people's lives: when I was a homeless teen and got a free bike, it radically changed my life, leading to a business degree and small business success. We have an extensive collection of vintage bicycles and parts, and are happy to do custom builds, modifications, or parts packages. We would love to find the part or bicycle of your dreams! Listing Policies: 1. All orders are insured! If you receive a package with any damage, Take multiple photographs of the packageTake multiple photographs of the product in the packageTake multiple Photographs from different angles of any damage to the product.Without photos, we cannot file a claim or process a return/refund!!2. Please carefully review the photos and information provided before buying! If you have any questions or concerns, CONTACT US directly on eBay or at our number, found in our eBay Store. 3. If you have ANY concerns with an order, please CONTACT US and we will promptly resolve your concerns. 4. We ship same day and use expedited services. Delivery time is usually 2-4 business days. Nearly all boxes are custom made to reduce risk of shipping damage. 5. Contact us for international shipping pricing before bidding!
julio 22, 2026

YST RETRO BMX 3 PIECE SQUARE TAPERED AMERICAN BOTTOM BRACKET KIT 122MM SILVER

The YST Retro BMX 3 Piece Square Tapered American Bottom Bracket Kit in silver is a high-quality component designed for BMX bikes, specifically old school and universal bikes. Made of steel and featuring a spindle type of Square Taper - JIS, this bottom bracket kit includes both the bottom bracket shell and spindle. With a length of 122mm and a shell width of 68mm, this product is compatible with BMX bikes looking to achieve a retro look with an American bottom bracket design. Made in Taiwan, this bottom bracket kit from YST is a reliable choice for cyclists looking to upgrade or repair their bike.
julio 22, 2026

YST square taper spindle BB BMX conversion kit SEALED MECHANISM

Bottom bracket conversion kit for 3 piece square taper spindle cranks made by YST. Convert your one piece crank to three piece with this spindle/bottom bracket. Spindle is for JIS (Japanese) square taper cranks - this will NOT fit Campagnolo square taper, Sugino Super Mighty or Haro Group 1 cranks from the mid-80's. Cranks we do know that this will fit are Sugino Maxy Cross, Suntour VX, and Takagi Tourney. Size: American Bottom Bracket (51.5mm diameter cups, 130mm long spindle) SEALED MECHANISM (which means it has a plastic cover that goes between the cone and the bearing that keeps dirt/water out). All parts shown are included.
julio 22, 2026

YST Sealed Mechanism Bottom Bracket One Piece Crank 24T BLACK

This is YST sealed mechanism bottom bracket set for 1 piece cranks. Sealed mechanism is a bicycle industry term referring to a dust shield over the bearings (notice the black dust shields that keep dirt out that would normally make it past the cones on regular bottom bracket sets). This will fit most one piece cranks. It is threaded 24 threads per inch. This will NOT fit 28T threaded one piece cranks. Color: BLACK Included are: * 2 cups * 2 bearing retainers * 2 lock cones * 2 dust shields * 1 lock washer * 1 lock nut * 1 chain ring space Everything is new in the original box.
julio 22, 2026

YST square taper spindle BB BMX conversion kit SEALED BEARING

Bottom bracket conversion kit for 3 piece square taper spindle cranks made by YST. Convert your one piece crank to three piece with this spindle/bottom bracket. Spindle is for JIS (Japanese) square taper cranks - this will NOT fit Campagnolo square taper or Haro Group 1 square taper cranks from the mid-80's. Size: American Bottom Bracket (51.5mm diameter cups, 127mm long spindle) Spindle Diameter: 17mm SEALED CARTRIDGE BEARINGS - aluminum alloy cups and lock rings. All parts shown are included.