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From what I can see on the Token page, you need to select a BB that matches the crank axle diameter (24mm for Shimano) and the frame bearing cup standard your frame has. The Token web site has a nice filter that lets you select crank and BB cup types so I'd let that guide you initially.
This is about the most informative page I've found on the myriad of BB ...
3
If the specs are identical, then they are functionally the same. There is no 'rotation angle' spec - the body of the derailleur rotates around the 'B pivot' and these two just happen to have been at slightly different positions when they were photographed.
The product names suggest the FT55 is slightly better than the FT35, but I don't think there is really ...
3
A quick compare of both linked websites shows that the TZ50 is rated for a total capacity of 34 whereas the FT55 is only listed as capacity of 17.
Both are rated for a biggest big of 28 teeth, which is also their smallest big cog supported. IE its 28 tooth only.
The FT55 has a small of 11-14 and the TZ50 has a small of 14 only.
That means the FT55 is ...
2
Newer versions of Tiagra brifters route the shift cable under the bar tape. Do be careful though because Shimano has changed their cable pull on some versions. The 4700 series Tiagra uses a cable pull ratio that is different from any other Shimano models. If you get 4700 brifters you would need to replace your derailleurs to be compatible.
2
I believe this would be a straight brifter-for-brifter substitution. You'll also need to change the cabling to accommodate the new run, and you may need new bar tape.
2
According to this answer in reply to a question about what grease to use with Shimano roller bakes, it's important to use the proper Shimano roller brake grease and to apply it into the hole properly. The Shimano grease comes in a tube with a nozzle that facilitates proper grease application.
Very important to follow the instructions that come with the ...
2
Actually, not all shimano road calipers have the same pull, but newest sora and up all have the same Super SLR cable pull. As a general rule, all their shift/brake brake levers with the gear housing run under the tape are compatible. Older levers, new Claris, last gen Sora have the old shorter pull ratio, which most other brands use.
The longer pull Super ...
2
The Metrea crank will first of all need a different bottom bracket, which is no problem. What you need to worry about is frame clearance. Depending on how your bike is set up now, it may put its single 42t ring where your 34t is currently, a big jump. Whether the frame will be able accommodate it without rub isn't something a forum can help you with.
To ...
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Yes, Metrea cranks will fit on your bike, but you need a new bottom bracket. You have a threaded bottom bracket shell with a cartridge BB, Metrea cranks work with outboard Holowtech II BBs in the threaded shell. The Shimano spec pages says use an SM-BBR60.
Whether you can get an 11 speed cassette on the freehub depends on the size of cassette you use. Road ...
1
None that I can think of. It will be much easier to use the 2x shifter, rather than swapping out the dropper lever for a shifter later down the road.
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The key issues relating to compatibility is the width and spacing of the cassette sprockets (and chainrings), chain design and the design of the ramps and pins on the sprockets and rings that facilitate shifts. SRAM followed Shimano up to 11 speed but I believe they diverged at 12 speed.
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They're both freewheels, so likely the design has been around for decades. At this price point in the market, noone really compares features, a user is more interested in specs like max/min toothcount and number of cogs. Thats about it.
Specs are identical - they're both 6 speed with 14 tooth minimum and 28 tooth maximum cogs.
The TZ20 is probably a ...
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