Yoshimura R&D of America, Inc.

790/890 Adventure 19-23 / 22-23 Norden 901 RS-4 Stainless Slip-On Exhaust, w/ Stainless Muffler

790/890 Adventure 19-23 / 22-23 Norden 901 RS-4 Stainless Slip-On Exhaust, w/ - Main image
$583.86 $789 In stock

Category: Street Series Exhaust System

The KTM 790 Adventure/Adventure R is hands down the most anticipated adventure bike for 2019. KTM has put an incredible machine together for today's more aggressive ADV riders.

We started off by developing our Works Finish RS-4 muffler profile to compliment power delivery. This new KTM responded to our design even more than we had hoped, increasing 5.5% in max HP, and 4.7% in max torque. To add to the aesthetics and protection we included a carbon heal guard. That Yoshimura power and rumble that our RS-4 delivers is perfect for both on and off-road adventures.

Yoshimura RS-4 Slip-on weight 7.7 lbs vs Stock muffler weight 7.9 lbs.

Proudly made in the USA!

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Sound Insert/Spark Arrester Options

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Sound Level

Volume Insert Spark Arrestor Included
INS-10-K No
INS-14-K No
SA-04-K No 
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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Penelope ★★★★★

Took it out on a muddy trail right after installing — the sound is deep and throaty without being obnoxious, and the stainless muffler held up perfectly against the first wash. Definitely feels lighter than the stock unit when lifting the bike over logs.

Benjamin ★★★★★

The fit on my 790 Adventure R was spot-on, and the tone at idle is a nice deep rumble without being obnoxious. Feels noticeably lighter than the stock can, and you can feel the bike breathing easier at mid-range throttle openings.

Amelia F. ★★★★★

Installed it on my '22 901 and the stainless steel construction looks great while shedding a few pounds. The fit was perfect and it really wakes up the bike's character without being obnoxiously loud.