This ring is for a bicycle front derailleur and converts 34.9mm to 31.8mm. Bicycle Front Derailleur Ring Adapter Convert 34.9mm to 31.8mm Mountain Bike. If you want to modify your bike front derailleur, this adapter ring will be of great help to you.
eBay
Bike Front Fork 15x100mm To 110mm Rear 12x142mm To 148mm for Boost Hub Adapter Set Conversion Kit. Size：Front 15x100mm To 110mm/ Rear 12x142mm To 148mm. 1 X Adapter. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
eBay
eBay
The Ratchet LN upgrade kit enables the conversion of DT Swiss 3-pawl hubs to the renowned DT Ratchet freehub system. LN system is specific to 370 hubs such as those found on 1900 series DT complete wheels, the freehubs are not compatible with standard Ratchet or Ratchet EXP hubs.
eBay
1 x Disc Brake Adaptor. Color: Black, red, gold, silver.
eBay
Bike Front Fork 15x100mm To 110mm Rear 12x142mm To 148mm for Boost Hub Adapter Set Conversion Kit. 1 X Adapter. Size：Front 15x100mm To 110mm/ Rear 12x142mm To 148mm. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
eBay
Mountain bike flywheel 1. Color: Black. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
eBay
Suitable for the rear hub barrel shaft to open 142mm to 148mm, and the quick release device is used to install and fix the wheels. Specification: Rear 12MM hub barrel shaft to open 142mm to 148mm. Item Type: Boost Hub Adapter.
eBay