I’ve got a friend who wanting to do some trading. He’s got one of those air auxiliary shift kits from 4 States, for a 13 speed and he suggested that it might work for a 15. Well, sounds and seems like it would but their not advertised for a 15, just 13 and 18. He’s never had it on a truck, so I know it’s good. The air auxiliary splits the top range on the 13 but I was wondering if it could be used for the deep reduction(blue switch) on the 15? I call them fake twin sticks and have never really cared for the concept but he doesn’t want much for trade.
Air auxiliary shift for a 15 speed
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Aug 17, 2022.
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Here’s my opinion, and it’s doesn’t mean much. If you have 2 sticks coming up out of the floor board there better be 2 transmissions hanging under it.
Roger McG, beastr123, kranky1 and 1 other person Thank this. -
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