1. The rear derailleur hanger (29 g) is very specific.
The inner part is attached to the frame with a screw. Meanwhile, the outer part is fixed only with an axle. If the axle is removed, the outer part of the hanger may fall off and be lost.
The outer part can be placed in one of two ways ("flip chip"), either for the "shorter" or "longer" axle position.
2. The rear axle (50 g) is 12 mm x 148 mm with an M12x1.5 thread.
3. The Post Mount brake adapter (46 g with bolts) is also specific.
The frame has a Flat Mount; its placement is for the "shorter" axle position. Using a standard Post Mount adapter will also result in the "shorter" axle position.
However, the included the Post Mount adapter has two additional holes shifted for the "longer" axle position.
4. The headset (121 g with a expander plug; 76 g without it) includes two bearings.
The upper bearing measures 41.8x30.1x7 and is marked 6B 7HXOD41.8x45°x45°.
The lower bearing measures 52x40x8 and is marked 15 8H*52*40*45°*45°.
Do these markings refer to the NECO NHB-6B and NHB-15 bearings?
5. The 37 mm seatpost clamp (24 g).
The 37 mm size is rather rare.
6. Two bolts (6 g) for the water bottle cage bosses.
7. Three internal housing covers.
(a cover is removed from the frame)
