What size adapter to go 220mm rear disc???

[KenX]

Assuming it's the same as when I fitted 220mm to the front, ie +40mm post mount to post mount?
Decoy base 2019 FWIW
Thanks in advance

 

[Gyre]

2020 Decoy specs say that it uses 200mm rotors front and rear. If you actually have a 200mm rotor out back and the caliper is threaded directly into the posts with no adapter, then a +40 would be too much.

 

[KenX]

There's already an adapter there with the 200, I'm thinking it's a 180-200 adapter so the calliper doesn't bolt direct to the rear triangle in order to protect it from wear n tear......

 

[Sapientiea]

2019 Decoy needs a 40mm post mount for 220mm! Standard a 180mm mount is present. With me Yarik also 180mm front mount

 

[KenX]

Thanks for confirming that!

 

[Jeffsy29]

I used

Avid/SRAM Disc 40mm Post-Mount Adaptor Sku: BR2041​

UPC: 710845714450