Bottom Bracket Cartridge 178 mm Fat Tire for 83 mm-120 mm shell

Product Description

178mm Bottom Bracket Cartridge for 83mm - 120mm width frame

Due to huge demand from increase in Fat Tire Bikes with 83mm - 120mm bottom bracket shell, here is a BB cartridge that will fit. For use with our 2 stroke kits and our electric kits or any Fat Tire Bike motorized project that requires up to a 178mm spindle.

Product Reviews

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happy to find a replacement part!

Posted by Nicholas Kling on 10 10 2020

i nearly thought i was going to have to scrap my fatbike because the 120mm bottom bracket was extremely hard to find - but this arrived quickly and worked perfectly
happy to find a replacement part!

Posted by Nicholas Kling on 10 10 2020

i nearly thought i was going to have to scrap my fatbike because the 150mm bottom bracket was extremely hard to find - but this arrived quickly and worked perfectly
Works on Mongoose Malus with 111 mm BB shell

Posted by Tim on 08 18 2020

Works great and fits my Mongoose fat bike perfectly. It comes ready to install on a a 120 mm shell but the bearing on the non drive side is adjustable. I used a small piece of pipe and a hammer to gently tap the bearing along the spindle until it fit just right. I found it easiest to install the drive side first and then tap the other bearing until you get a good fit. Remember to throughly clean the threads in your BB shell and treat with anti seize before installing the bottom bracket. You will need a spline bottom bracket tool to install it as well. It comes with a notched lock ring as well but I just used a large pair of channel locks to snug it down. I emailed them to ask if it would fit and they responded promptly but it might save time all the way around if the part was advertised as adjustable. So far the part is working flawlessly and the customer service is top notch.
Awesome fit

Posted by Pete Thompson on 07 13 2020

Just what I needed for my gas bike frame. You guys rock !!
178 MM Spindle

Posted by K.R.M on 06 30 2020

Purchased a 178mm spindle for a Mongoose Beast Fat Bike. The spindle was slightly different than the one pictured on the webpage and it came with bearings, one side can be moved to fit your BB shell and it also came with a BB cupset which you may need to use because i couldn't get my current cupset to slide over the bearings on the spindle. I had to go out and buy a 20t spline tool and a wrench to install the new cupset. I'm happy with the purchase and SickBikeParts was friendly and answered any questions i had. However it was an inconvience to have to buy a spline tool and wrench and when i recieved the spline it wasn't exactly as the one pictured. Would still recommend to a friend..
shift kit

Posted by Jerry Smith on 12 31 2019

easy installation works great
Great product!

Posted by JB on 08 24 2019

Great replacement / upgrade to my Nakto electric mountain bike. Perfect fit!