6368 Posted March 1, 2019 Share Posted March 1, 2019 My my RW713s has no x in its model name even though a similarly speced RD or DM would. Whats up with that? Quote Link to comment https://www.bigmacktrucks.com/topic/55898-x-or-sx-superliner/ Share on other sites More sharing options...
ekennedy21 Posted March 2, 2019 Share Posted March 2, 2019 i have never seen a tag on a superliner denote size of rears in the model number. Quote Link to comment https://www.bigmacktrucks.com/topic/55898-x-or-sx-superliner/#findComment-416958 Share on other sites More sharing options...
Superdog Posted March 2, 2019 Share Posted March 2, 2019 the X and SX goes back to a different era,A RW713 was heavy duty,a RW613 was standard Quote Link to comment https://www.bigmacktrucks.com/topic/55898-x-or-sx-superliner/#findComment-416962 Share on other sites More sharing options...
ekennedy21 Posted March 2, 2019 Share Posted March 2, 2019 (edited) Correct me if I am wrong, the difference between a rw-613 and rw-713 is in the size of the frame rails and the sx designation on b’s, dm’s, rd’s, and rb’s is relative to having rears over 50k Edited March 2, 2019 by ekennedy21 Quote Link to comment https://www.bigmacktrucks.com/topic/55898-x-or-sx-superliner/#findComment-417002 Share on other sites More sharing options...
6368 Posted March 3, 2019 Author Share Posted March 3, 2019 On 3/2/2019 at 7:50 AM, ekennedy21 said: Correct me if I am wrong, the difference between a rw-613 and rw-713 is in the size of the frame rails and the sx designation on b’s, dm’s, rd’s, and rb’s is relative to having rears over 50k Generally i think that is about right... However there is always the exception... maybe these rears were swapped. Quote Link to comment https://www.bigmacktrucks.com/topic/55898-x-or-sx-superliner/#findComment-417097 Share on other sites More sharing options...
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