NORIFUMI Slip-On Whoops Exhaust — KTM 390 Adventure (Stainless Steel)

The KTM 390 Adventure is built to go further than the tarmac, and it deserves an exhaust that sounds the part. The Norifumi Whoops is a direct slip-on that replaces the stock silencer with a compact stainless steel canister, giving the bike a deeper, sportier note and a cleaner, more purposeful look at the rear.

The full stainless steel build resists corrosion and heat, so the finish holds up through long tours, trail dust, road grime and monsoon riding. As a slip-on, it connects to the bike's stock header pipe, so no header change is needed.

Installation is bolt-on, but professional fitting is recommended so the joint seals properly and every mount is torqued correctly.

Worth knowing before you fit one: aftermarket exhausts change your bike's stock noise output, and Indian motor vehicle rules regulate permissible noise levels. It's worth being aware of your local regulations, particularly around PUC testing, before modifying your exhaust.

Key details

• Brand: Norifumi
• Model: Slip-On Whoops
• Fits: KTM 390 Adventure
• Material and finish: Stainless steel, silver
• Type: Slip-on, connects to the stock header pipe
• Installation: Bolt-on (professional fitting recommended)