Looks jankey but is legit; https://www.jensonusa.com/SramAvid-Disc-Post-Mount-Spacer-Set

 

Any idea why they make the two different options (individual spacers vs one piece bracket)?

 

That's just the SRAM/Avid design. Personally, I'm a huge fan of Hope adapters with offset bolts. The adapter bolts to the fork and the caliper bolts to the adapter with 4 short bolts and no conical washers:
https://www.jensonusa.com/Hope-Disc-Brake-Adaptor

Should be mount K.

 

The 20mm Post adapter is more of a OEM part that's supplied to bike manufacturers.
Not many places sell the 20mm Post adapter, an alternate adapter that will do exactly the same thing is the Shimano SM-MA-F180P/P2 adapter.

http://si.shimano.com/#/en/SI/8170A

https://www.jensonusa.com/Shimano-F180PP2-Disc-Brake-Adaptor

 

The 20mm Post adapter is more of a OEM part that's supplied to bike manufacturers.
Not many places sell the 20mm Post adapter, an alternate adapter that will do exactly the same thing is the Shimano SM-MA-F180P/P2 adapter.

I just tried to use this adaptor for a Fox 36 / Shimano 203mm rotor and had rubbing due to insufficient clearance of the caliper with the outer edge of the rotor. Maybe the SM-MA-F180P/P2 adapter will work with the 200 mm rotor from SRAM, but I am getting this adapter for the 203mm rotor today:

https://www.worldwidecyclery.com/pr...or-for-203mm-rotor-74mm-caliper-180mm-direct-mount-fork?nosto=frontpage-nosto-1

Actually - just realized from looking at the link for the Hope adapters that there are different mounts for the 200mm and 203mm rotors. So the F180P/P2 adapter probably is the correct one.

 

Thanks. I'll try that if I can't get my calipers aligned with the current spacers.

 

Ok, got the spacers to work for the fork but on the rear something is wrong. The front of the pad is aligned properly but the rear of the pad is about 3mm too high. Do the fork and frame use different adapters?

 

The same adapters can be used on the front and rear.
Are you using the correct size spacers and are they orientated the correct way?

https://www.sram.com/sites/default/.../default/files/techdocs/gen_5232_disc_brake_mounting_specifications_rev_c_0.pdf

 

if the rear mounts were meant for say a 160 disc and the forks for a 180, then an increase to 200 would require two different adapters. At least that's how it worked out on mine.

 

The rear came stock with 180mm direct mount. It's a Hightower LT.

 

I know I'm late to the party here, but for future reference, the Shimano F203P/PM adapters work great with Centerline 203mm rotors and SRAM calipers on 180mm post mount forks and frames. The Shimano adapters are available for about $8 at various online sellers, and the 203mm Centerline rotors were actually cheaper than 200mm rotors when I was shopping for them. 1.5% more stopping power too

 

Do the screws and everything fit too? I was thinking of upgrading my Guide R's from a 180mm centerline to a 203mm Ice-Tech rotor. But I wasn't sure if the the Shimano adapters and screws were 100% compatible with Sram brake calipers. Or if you had to do some fiddling or buy extra screws and spacers to get it to work. I'm on a 160mm fork so it looks like I would need a different adapter, the F203P/P I believe.