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Gasbox 1957 Sportster Header Pipe

PostPosted: Wed Apr 07, 2021 2:46 pm
by GaryM2
Gasbox has replenished their stock of 1957 Sportster 2 into 1 Header Pipes.

Jesse at Gasbox did a great job reproducing these header pipes to match the originals. He lists these as fitting other model years too.

Here is a link to their site.

https://thegasbox.com/collections/xl/pr ... -head-pipe

Here's a manufacturing description:

https://thegasbox.com/blogs/news/sports ... to-1-pipes

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Sat Jul 10, 2021 4:13 pm
by roadbum
Has anyone purchased this pipe? Pros and cons. Also looking for a muffler. Any help appreciated. Thank you in advance, Tom.

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Sat Jul 10, 2021 5:24 pm
by Ferrous_Head
Bot the pipe but I have one of the high pipe mufflers. Possibly better than original HD. One of the best mufflers I have ever seen.

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Sat Jul 10, 2021 5:56 pm
by wz507
roadbum wrote:Also looking for a muffler. Any help appreciated. Thank you in advance, Tom.


https://thegasbox.com/collections/xl/pr ... er-muffler

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Sun Jul 11, 2021 8:42 am
by chuckthebeatertruck
Yes. About four weeks ago I got one of the second run pipes.

I can't tell the difference from my original.

Really, really happy.

But, expect the tight fit of an original. Hook the front and spread the rear pipe to fit and pop on.

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Sun Jul 11, 2021 8:44 am
by chuckthebeatertruck
wz507 wrote:
roadbum wrote:Also looking for a muffler. Any help appreciated. Thank you in advance, Tom.


https://thegasbox.com/collections/xl/pr ... er-muffler



Thanks!

Gasbox was out a few weeks ago and now I can finish up that install :-)

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Sun Jul 11, 2021 8:44 pm
by roadbum
Thank you to all for your comments. I will be ordering the pipe and muffler for my 57XL. Tom.

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Mon Jul 12, 2021 9:44 am
by GaryM2
Here is a pic of the Gasbox pipe on the 57 Sportster.

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Mon Jul 12, 2021 10:15 am
by Mike
I asked The Gasbox about 2 into 1 for K models, he says they have to make some tooling but hope to be in production by Winter.
Mike

Re: Gasbox 1957 Sportster Header Pipe

PostPosted: Mon Nov 29, 2021 4:59 pm
by chuckthebeatertruck
To add to the previous pictures, here are some shots of the gasbox 2:1 and muffler mounted on my wife's 1967 XLH.

There's plenty of kicker clearance -- though everything is a tight fit.

Also, the rear end of the header is slightly misbent. It kicks the tail of the muffler in 1/4" and up 1/4". This seems very small -- but if you run low road clearance shocks you may find the swing arm/backing plate coming very, very close to the muffler. I simply released the muffler to header clamp from the support tube and spaced it a bit further out to give me plenty of clearance.

However, on the final install I did run into very, very minor interference between the right foot rest support and the pipe. It needed between 1/16 and 1/8th more room to fit without touching. I marked it and literally beat the nuggets out of it with a peining hammer. Took more blows than you'd think to bend it inwards.

Anyways, I've got zero complaints. All the clamps are also gas box repos -- the muffler support tube is NOT the correct one. It's a generic 65 and up style for dual independents.

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