Q158 Didn't Work
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Road Master
Joined: Oct 2012
Posts: 777
Likes: 45
From: Beaumont, Ca
Q158 Didn't Work
This is second part of the lolly pop dilemma. In first part, I bought the Q118 for my 2006 Heritage Classic Softail. No effect whatsoever. Tried everything, except having the motorcycle upside down. Kevin, of DK Products stated they had never done any research on twin cam models. He suggested a Q158. I returned the Q118's and got the Q158's today. They would not fit, even though the screw hole is one inch from the edge. Even if they did, they would have covered about 99.9 % of the interior of the muffler, which would have been too restrictive for exhaust. Due to the stem (bolt), they would not make the turn to fit in the hole, even when turned sideways. I am not sending them another $5.00 for shipment. I was, and remain skeptical of any claims as to this product.
Road Captain
Joined: Oct 2011
Posts: 523
Likes: 1
From: kingston ontario
what is the diameter of your exhaust ?
my bike has a 3'' opening so for me the W258 inserts work well and it was a noticeable difference in performance and sound (i run without baffles)
personally i had a good experience with dkcustoms and their customer service.
would the inserts go in if the bolt was a tad shorter?
my bike has a 3'' opening so for me the W258 inserts work well and it was a noticeable difference in performance and sound (i run without baffles)
personally i had a good experience with dkcustoms and their customer service.
would the inserts go in if the bolt was a tad shorter?
Seasoned HDF Member
Joined: Mar 2012
Posts: 100,455
Likes: 19,811
From: Centennial, CO
No problem getting mine in the Longshots. You may have to open the hole. Your stock baffle bolts will still work. Also, as suggested above, the bolts are plenty long and could be trimmed shorter with a Dremel and a cut-off wheel. The sound and performance gains from this simple, inexpensive device are worth the effort.
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Road Master
Joined: Oct 2012
Posts: 777
Likes: 45
From: Beaumont, Ca
Q158 Dilemma
The muffler itself has a two inch inside diameter. But because the baffle is welded in, the weld bead around the baffle shortens the circumference/diameter all around. The weld goes right up to the edge of the muffler, so relocating the hole is not a solution. When I had the Q118, I had to drill a hole large enough for the screw to fit. The reason the Q118 fit was because the dish is smaller than the Q158, and the screw was able to negotiate the turn into the hole. Even with the Q118, with the inside washer and nut, the bolt was not long enough to allow another washer and nut on the inside, so I had to remove them and only went with the outside lock washer and nut on the outside. The bolt on the Q158 is the same lenght as on the Q118. The bolt is barely long enough, and cutting it would ruin it since I would not be able to screw the nut on the outside. Hence, the dilemma. Believe me, I have tried everything. Nothing will work on this Heritage Deluxe stock muffler with welded in baffle. And yes, removal of the baffle is out of the question.
Road Captain
Joined: Oct 2011
Posts: 523
Likes: 1
From: kingston ontario
well that sucks, without seeing it myself i am not sure if elongating the screw hole would work but, i suppose you could change/trim the diameter of the insert a little.
i wonder if the W series would fit in a little easier
i wonder if the W series would fit in a little easier
Road Master
Joined: Aug 2012
Posts: 784
Likes: 12
From: Texas
Cant speak to your dilemma as my setup is different.
I put in W118's after removing the baffles from my rush slip ons.
Without a doubt i gained back most if not all the torque i lost removing the baffles.
I put in W118's after removing the baffles from my rush slip ons.
Without a doubt i gained back most if not all the torque i lost removing the baffles.
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Road Master
Joined: Oct 2012
Posts: 777
Likes: 45
From: Beaumont, Ca
Remedy
Here's a solution my wife came up with. I will grind down the welds that secure the insert to the screw (stem) . I will then replace the stems and place a nut sideways, and weld it in place against the insert. In this position, the nut will face down, toward the hole in the muffler, and will accept a bolt, which I will insert from the outside of the muffler via the existing hole. The bolt is inserted into the nut and tightened. Voila!!! If it is too restricted, I will turn the insert as needed. Can you all picture that?
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Road Warrior
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