NORIFUMI Slip-On Whoops Exhaust for Himalayan 450 / Guerrilla 450 — Short, Carbon Fiber Finish

Everything that makes the standard Short Whoops work — the compact tucked-in canister, the trail-ready ground clearance, the deep off-road note — is still here. What's different is what you see: a carbon fiber finish over the same stainless steel core, giving the Himalayan or Guerrilla 450 a sharper, more premium visual edge than the plain steel version, while shaving a little extra weight in the process.

Underneath the finish, the engineering doesn't change: high-grade stainless steel construction for genuine durability, an advanced airflow design for improved engine performance and enhanced throttle response, and a rich, deep sound profile that suits the rugged, adventure-ready character of the platform. The carbon fiber wrap is about lightweight construction and a modern, sporty appearance for riders who want their bike to look as sharp as it performs — this is the finish upgrade, not a performance downgrade or upgrade over the standard steel version.

It's a direct slip-on fit for both the Himalayan 450 and Guerrilla 450, bolting onto the stock header with no cutting or welding required. Professional installation is recommended.

Choosing carbon vs stainless steel: performance and sound are effectively identical between this and the standard Short Whoops — the decision comes down to look and budget. Carbon finish costs more and delivers a more premium, modern aesthetic; plain stainless steel is the better value pick if styling isn't the priority.

Worth knowing before you fit one: aftermarket exhausts change your bike's stock noise output, and Indian motor vehicle rules regulate permissible noise levels. Most riders fit slip-ons without issue, but it's worth being aware of your local regulations, particularly around PUC testing, before modifying your exhaust.

Key details

• Brand: Norifumi
• Fits: Royal Enfield Himalayan 450 & Guerrilla 450
• Length: Short canister (compact, off-road-focused profile; also available in Long)
• Construction: high-grade stainless steel core with carbon fiber finish
• Sound: rich, deep tone suited to adventure/off-road riding
• Improves: airflow, throttle response, and overall performance feel
• Fitment: direct slip-on, bolt-on installation (professional fitting recommended)
• Positioning: premium finish option — same core performance as the standard SS Short Whoops, priced higher for the carbon finish and lighter weight