We are trying to satisfy 100% of our customers
Our bikes are 100% safe and eco-friendly
biker4-shop-icon3

and many others

julio 26, 2026

Cook Bros Bullseye Bottom Bracket Lock Ring Collar BMX Cruiser Fat Chance MTB

For your consideration are 3 different width aluminum lock collars for 5/8" spindles. These lock collars being offered all have an O.D. of 1" and an I.D. of 5/8" for 5/8" O.D. spindles. The price listed is per each and the price varies depending on width. The advantage to having these width choices is for your chainline adjustability on your bike. You can pick and choose your width from the drop down menu. Buy a single piece in the width you want, buy the same width set, or mix and match widths. The narrower the lock collar(s) the more adjustability you will have with your spindle. You can fine tune your chainline with these lock collars and also available in another auction of mine are spacers/shims. Add each of your lock collar width choices to your cart before checking out. These lock collars slide onto a 5/8" O.D. spindle (sold separately - see my others auctions listed) to keep your spindle from drifting side to side when installed on your bicycles bottom bracket. These lock collar help you to achieve optimal chainline with both the front sprocket and rear freewheel. These lock collars are installed in between the inside of your crank arm(s) and each of the bearing retainers. Each lock ring has a single set screw w/ a nylon thread compound to keep it in place once tightened. Pictures of the complete bottom bracket are reference only to see what type of bottom bracket kit these lock collars are intended for. These complete bottom bracket kits are NOT included with the sale of the lock collar(s) being offered. Shipping/Return Info: Flat rate USPS 1st class mail w/ tracking included. A full refund of the purchase price (less shipping) will be given for returns for un-installed new parts only. Parts that are returned that show wear from installation/mishandling will be subjected to re-stocking fee and this fee will be deducted from the original purchase before any refund will be given. Thanks for your understanding. Please view my other auctions and check my seller feedback rating on these products I have been selling over the years. I have had many satisfied customers using my products in completing their builds. You will be happy also. Thanks for looking. Feel free to email with any questions.
julio 26, 2026

Cook Bros Bullseye Bottom Bracket 5/8″ Spindle Kit Spacers Washers Shim Aluminum

For your consideration are Aluminum Spacer/Shims/Washers for a 5/8" O.D. (outside diameter) spindle. There are 3 widths to choose from. These thicknesses of these shims/spacers/washers being offered are 1) .063" for the thickest, 2) .032" for the middle thickness, and 3) .016" for the thinnest thickness. Each stack of each thickness pictured are 20 shims for reference. Each successive incremental thickness is 2x the thickness of the next thinnest in size. Price listed is for each 1 (qty) shims/washer/spacer. When checking out and paying - please leave a note how many of each thickness you want. Thanks in advance. If you forget to leave a note, it might delay shipping in a timely manner - as I will email asking you to provide an answer how many of what thickness shim(s) you want before I can process the package. All shims being offered have a 5/8" I.D. (inner diameter) for sliding onto your 5/8" O.D. spindle. These spacers/shims/washers all have 1" O.D. Using these shims/spacers/washers in combination with variable thickness lock collars (listed in another 1 of my auctions) will help you achieve proper or desired chainline with your front chainring(s) and rear freewheel/cog - depending upon your configuration. These spacers are typically installed and used with slider type spindles (sold separately in some of my other auctions.) In addition, there should always be at least 2 shims positioned between the bearing and lock collar. Having at least 2 of these shims between each bearing and each lock collar will extend the life of your bearings. This auction is for the shims/spacers/washers ONLY. The related pictures show other bottom bracket kit components and are for reference ONLY and are NOT included with the sale of the shims/spacers/washers you are purchasing. These other pictures provided are for reference ONLY so you can see the type of bottom bracket kit(s) these spacers/shims/washers can be or are intended for. Thanks for your understanding. Please check my seller feedback and ratings on this item and the many other items I currently offer in other auctions that I have been selling over the years. There are plenty of satisfied customers who are pleased. You will also be pleased with your purchase. Thanks for looking. Feel free to email if you have any questions, comments, concerns, etc...... Shipping/Return Info: USPS will deliver your package & tracking is included w/ the 1st class postage. Combined shipping discounts will be given on multiples items purchased - wait for invoice adjustment before paying to receive discounts. eBay will forward all international packages to their destination through the global shipping program. Returns will be accepted for un-installed new parts only. Parts that show wear from installation will not be accepted for returns. Thanks for your understanding. Feel free to email with any questions.