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1 mean cruiser
11th August 2008, 04:18
Does anyone know of a rear disc conversion for a '73 sportster that does NOT require frame or swingarm modification?

russzx6
11th August 2008, 04:41
Easiest way is use a 79-81 sportster swingarm, brake and rim. .bolts straight in i believe. I'm currently putting an 02 fatboy rear rim with a 98 sporty 11 1/2" rear disc setup on my 77. ..a little more involved so it has turned out but getting there. Havn't seen any pics of one using the standard swingarm to comment on?

cat5752
11th August 2008, 20:43
http://www.sportster.org/tech/disc-conv/

http://www.saunalahti.fi/~affe2/v-twin/mods/brake_conversion.html
Pretty good info...