Slip on for 1390

dwbandler · Jul 19, 2024

Has anyone here put a slip on muffler on their 1390 yet?

I ordered one from Austin Racing about 2 months ago and it finally showed up. Sadly the sent the wrong style, when I shake the muffler there is a piece of metal rattling around inside, and worst of all it doesn’t even fit the bike. Their website does clearly advertise mufflers and exhaust systems for the 1390. They are in the UK so I’ll need to wait til next week to get a response.

Indytruckboy · Aug 29, 2024

I have a Leo Vince showing up today. It’s not my first choice. But the lack of exhaust noise as far as knowing where the rpm’s are has prompted me to buy this cheaper option until more designs come out for this newer bike. SC has some things on there website saying new designs. Will get something better later.
So I will let you know what I think once installed.

Indytruckboy · Sep 1, 2024

Put it on and have run it about 150 miles. It’s not bad. Not too loud. Doesn’t drone at highway speeds. I’m still breaking the bike in so no idea how it will be at higher rpm yet.
seems good quality.

Indytruckboy · Sep 1, 2024

magkrachi · 2025-09-29T10:28:05-0400

Austin Racing V3 mini just installed on mine. It sounds amazing and, I’m sure it’s a placebo effect, it’s feels faster!

117117 · 2025-09-29T11:22:59-0400

Nice! I installed the SC Project slipon (which I had on my 1290 prior to my 1390), and the benefit is that it fits the Spark header, which I installed later for more character. @magkrachi flash it, you will be amazed.

Slip on for 1390

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