105 shifter v rear mech compatability

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Soltydog

Legendary Member
Location
near Hornsea
I'm currently in the process of building a turbo only bike for use over winter & save messing with my road bike. I have a 105 10spd sti shifter approx 10 years old, how do I work out what rear mech will work with it?
A lot of 105 stuff is now 11 speed, so guessing that's no good & looking at the Shimano site & their compatability chart just confused me :wacko: Not sure what series 105 the shifter is but approx 10 years old

TIA
 
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User6179

Guest
I'm currently in the process of building a turbo only bike for use over winter & save messing with my road bike. I have a 105 10spd sti shifter approx 10 years old, how do I work out what rear mech will work with it?
A lot of 105 stuff is now 11 speed, so guessing that's no good & looking at the Shimano site & their compatability chart just confused me :wacko: Not sure what series 105 the shifter is but approx 10 years old

TIA

I would guess you have ST-5600 105 shifters and I believe Tiagra 4600 10 speed mech is compatible
 

Ajax Bay

Guru
Location
East Devon
A lot of 105 stuff is now 11 speed, so guessing that's no good & looking at the Shimano site & their compatability chart just confused me :wacko: Not sure what series 105 the shifter is but approx 10 years old
Maybe this excerpt will be less confusing for you. All current '105 stuff' is 11 speed so if you buy new, you need Tiagra (without the option). Otherwise there's lots of older/used 105 and Ultegra RDs for sale 'online'.

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Last edited:

craigwend

Grimpeur des terrains plats
I recently (2-3 months) changed my 11 year old 105 mech (10 speed) - replacement = Tiagra - exaclty the same apart from Tiagra a plate being steel the old 105 = alloy , few gramms difffence, otherwise 'identical' - from memory 2-3 different types / cage lengths
 

faster

Über Member
Any 7-10 speed shimano road derailleur will work except for 4700 tiagra, which has a different pull ratio.
 
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