Rear seat lifting for subwoofer box.

[rotwiler]

I been searching and can't find the correct bolt type for the rear seat bolts. I seen one youtube video a person commenting say m12. Is M12 correct?

 

[Kapt]

I just took one out and went to the local hardware store and said I need a longer one of these

 

[BWL]

They're metric. M12 could be right. Will be hitting the local industrial supplier monday to get longer ones for my seats so I'll know for sure then. I'll pull one out and bring it with me to be sure.

 

[88ROOK]

Call net audio. They know cause they send them with the seat mod kit. Just did mine

 

[BWL]

I don't trust the net audio kit. Wood spacers for my seat just doesn't seem safe, but yes they would know the bolt size.

 

[rotwiler]

Ok, let me know, I would appreciate it. Weird how so many lift seat and I searched for hours to find correct bolt type and nothing on any forums.

 

[88ROOK]

take one bolt out and take it to fastenal, they should have what u need

 

[McBroom]

I don't trust the net audio kit. Wood spacers for my seat just doesn't seem safe, but yes they would know the bolt size.

No don’t use wood!! You want to stack 6-8 washers for each bolt. That’s the correct and proper way to do it. So when your looking for the bolt length stack the washers on that bolt then add your old bolt length to it.


I Love My 2018 RAM 2500HD 4x4 6.4L
Mod list: Pedal Commander, AVS Vent shades, Solo Delete kit, molar side step rails

 

[88ROOK]

No don’t use wood!! You want to stack 6-8 washers for each bolt. That’s the correct and proper way to do it. So when your looking for the bolt length stack the washers on that bolt then add your old bolt length to it.


I Love My 2018 RAM 2500HD 4x4 6.4L
Mod list: Pedal Commander, AVS Vent shades, Solo Delete kit, molar side step rails

actually if want to get technical, a block of aluminum would be alot better. to each their own i just wouldnt want to look at a stack of washers sitting there

 

[BWL]

My lift will be 2" X 3/4" aluminum flat bar with 2 holes drilled for seat mount bolts each and a recess drilled for the head of the rear of the 2 load tray bolts. If I had a cnc I'd mill them, but I'll put them in and once they fit, black marker the edges with them in place to get the edges lined up cleanly once bolted down and use my bench grinder to clean them up flush to the seat base. Paint them black and bolt them in for good.

 

[MarshRam]

actually if want to get technical, a block of aluminum would be alot better. to each their own i just wouldnt want to look at a stack of washers sitting there

You actually can't see the spacers unless you are crouching down and looking real hard. I wrapped mine in electrical tape, making it even less noticeable.

As far as longer bolts go, I understand why some may want to get longer bolts for safety reasons, but there is another hinge under the seat that provides more fastening support. As well, the hinges behind the seat won't be as strong since they are not seated as deep. So regardless of longer bolts, the factory safety is still compromised.

Quite frankly, with a 3/4" lift my seat is on tight and it seems the truck would need to get hit by a semi or a high speed head on collision in order for all four bolts to snap sending everyone plowing through the front passengers and then out the front window with the seat attached to their ass. In those scenarios everyone would likely be screwed anyway. But, too each his own, I rarely if ever have anyone in my back seat. I also imagine the weight of rear passengers would make a difference in how something like that would play out.

I really don't know, mod at your own risk. Lol.

 

[McBroom]

actually if want to get technical, a block of aluminum would be alot better. to each their own i just wouldnt want to look at a stack of washers sitting there

Black paint my friend


I Love My 2018 RAM 2500HD 4x4 6.4L
Mod list: Pedal Commander, AVS Vent shades, Solo Delete kit, molar side step rails

 

[88ROOK]

however you spin it its still a stack of washers and to me, black electrical tape or painting them black is still an afterthought on top of an afterthought. I would know there there, so that just wouldnt sit well with me. another thought is you can get 2" galvanized at home depot and its got holes every 1 1/2"(so they should line up)( comes in 2 ft lengths), 3M some carpet on that and it wouldnt look as cheesy as a stack of washers

 

[BWL]

I have a block of cheese. If I wrap in in a black garbage bag and nobody sits on the seat it'll work fine. I'll use a glad brand since they're supposed to be the strongest.

 

[88ROOK]

all that mold will grow in the carpet...i'll pass

 

[rotwiler]

Lifted mine about a inch on my 2013 and seat still won't fold down. Front bolts actually screwed in(stock) but back ones won't quite hold. Nobody ever rides in back except my dogs on camping trips, but I still want longer screws to go as deep as stock, around a inch. My sub just touches the cloth under seat, so want it a little higher, then put grills over both subs.

 

[88ROOK]

you need to lift at least an 1 1/2", and yea you're gonna need longer bolts...so keep adding more cheese or washers whatever you prefer

 

[BWL]

Lol. The kraft singles never go bad and make good shims.

 

[BWL]

Lifted mine about a inch on my 2013 and seat still won't fold down. Front bolts actually screwed in(stock) but back ones won't quite hold. Nobody ever rides in back except my dogs on camping trips, but I still want longer screws to go as deep as stock, around a inch. My sub just touches the cloth under seat, so want it a little higher, then put grills over both subs.

Just got my new bolts. Stock is M12 1.75 thread 50mm long grade 10.9. I bought M12 1.75 thread 75mm 12.9, which are approx. 1" longer and a higher grade.also got plated so they are less likely to corrode

 

[Witch]

https://www.ebay.com/i/183086346536?chn=ps