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<p>[QUOTE=&quot;Sandsailor, post: 12380682, member: 342319&quot;]the rears are rated for 40k, but the Flex Air suspension is supposed to be rated for 38k hence my question.</p><p><br /></p><p><a href="https://www.pbtruck.com/Parts/Catalogs/Peterbilt-Suspensions.pdf" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.pbtruck.com/Parts/Catalogs/Peterbilt-Suspensions.pdf" rel="nofollow">https://www.pbtruck.com/Parts/Catalogs/Peterbilt-Suspensions.pdf</a></p><p><br /></p><p>if you look at this chart it shows Flex Air as 38k. Just wondering if there’s other ratings[/QUOTE]</p><p><br /></p>

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