![Looking to do a 1x conversation on my 2015 trek 3500, I believe i have a square tapered bottom bracket and I am curious if any other bottom bracket would fit to Looking to do a 1x conversation on my 2015 trek 3500, I believe i have a square tapered bottom bracket and I am curious if any other bottom bracket would fit to](https://preview.redd.it/95tt6gg5k4251.jpg?auto=webp&s=676a1b10b72bb4efe26be0edd28ddb41c841bd9f)
Looking to do a 1x conversation on my 2015 trek 3500, I believe i have a square tapered bottom bracket and I am curious if any other bottom bracket would fit to
![Trek 3500 Kids Mountain Bike | Kid's Bicycles | Gumtree Australia Sutherland Area - Sylvania | 1301512177 Trek 3500 Kids Mountain Bike | Kid's Bicycles | Gumtree Australia Sutherland Area - Sylvania | 1301512177](https://gumtreeau-res.cloudinary.com/image/private/t_$_75/gumtree/a2db03c9-2b53-4259-ad9a-b9f95f9e7200.jpg)
Trek 3500 Kids Mountain Bike | Kid's Bicycles | Gumtree Australia Sutherland Area - Sylvania | 1301512177
![Trek 3500 Sport Mountain Bike - Good Big Kid's Bike black/green | Used Bikes for Sale - Silicon Valley Bicycle Exchange - Bay Area Trek 3500 Sport Mountain Bike - Good Big Kid's Bike black/green | Used Bikes for Sale - Silicon Valley Bicycle Exchange - Bay Area](https://shop.bikex.org/uploads/1/3/0/0/130002567/s518234545767551931_p903_i1_w1918.jpeg)
Trek 3500 Sport Mountain Bike - Good Big Kid's Bike black/green | Used Bikes for Sale - Silicon Valley Bicycle Exchange - Bay Area
![Trek 3500 Mountain Bike, well kept, fully functional, Sports Equipment, Bicycles & Parts, Bicycles on Carousell Trek 3500 Mountain Bike, well kept, fully functional, Sports Equipment, Bicycles & Parts, Bicycles on Carousell](https://media.karousell.com/media/photos/products/2020/5/29/trek_3500_mountain_bike_well_k_1590729697_85b0a909.jpg)