![What is the difference between a D-NL and an LL Shimano square spindle bottom bracket? : r/bikewrench What is the difference between a D-NL and an LL Shimano square spindle bottom bracket? : r/bikewrench](https://styles.redditmedia.com/t5_2sje0/styles/communityIcon_dcxw6vhwrwj41.jpg?format=pjpg&s=1e590eb8020b2ad9a067cbb3acef875c0f415154)
What is the difference between a D-NL and an LL Shimano square spindle bottom bracket? : r/bikewrench
![SHIMANO Square Type Bicycle Bottom Bracket - BSA 73MM, Spindle: 122.5MM (LL123) - EBBUN300C23X : Amazon.co.uk: Sports & Outdoors SHIMANO Square Type Bicycle Bottom Bracket - BSA 73MM, Spindle: 122.5MM (LL123) - EBBUN300C23X : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/I/511SCEMISTL._AC_UF894,1000_QL80_.jpg)
SHIMANO Square Type Bicycle Bottom Bracket - BSA 73MM, Spindle: 122.5MM (LL123) - EBBUN300C23X : Amazon.co.uk: Sports & Outdoors
![Shimano BB-UN101 68 X 122.5mm Square Taper Bicycle Bottom Bracket Black : Amazon.co.uk: Sports & Outdoors Shimano BB-UN101 68 X 122.5mm Square Taper Bicycle Bottom Bracket Black : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/I/51eLh8gReZL.jpg)
Shimano BB-UN101 68 X 122.5mm Square Taper Bicycle Bottom Bracket Black : Amazon.co.uk: Sports & Outdoors
![Measured my existing BB (pic1) and it landed between 122 and 123mm. Guess it's a 122,5mm right? Shimano UN-300 seems to have two models D-NL and LL123. What's the difference? I've also Measured my existing BB (pic1) and it landed between 122 and 123mm. Guess it's a 122,5mm right? Shimano UN-300 seems to have two models D-NL and LL123. What's the difference? I've also](https://preview.redd.it/dobsmzq58nd81.jpg?width=640&crop=smart&auto=webp&s=1716cfca85d57dd7cbba094e0f733ead0d1c05d1)
Measured my existing BB (pic1) and it landed between 122 and 123mm. Guess it's a 122,5mm right? Shimano UN-300 seems to have two models D-NL and LL123. What's the difference? I've also
![SHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS : Amazon.in: Sports, Fitness & Outdoors SHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS : Amazon.in: Sports, Fitness & Outdoors](https://m.media-amazon.com/images/I/61WIgBil-IL.jpg)