NORIFUMI Rocket 4 Kompetisi Exhaust for Hero XPulse 210 — with DB Killer

This is the top of Norifumi's XPulse range — the same Rocket 4 Kompetisi spec that tops their CRF race line, brought over for XPulse owners who've built their engine and want an exhaust that actually matches it. If the Noctus T5 Boreup is the sensible upgrade, the Rocket 4 Kompetisi is the one for riders chasing every last bit of performance.

Mandrel-bent, high-grade stainless steel piping feeds a free-flowing mid-pipe and straight-through muffler, tuned specifically to maximize scavenging on bored-up setups — sharper throttle response, stronger low-end torque, and a genuine gain in peak power where a standard pipe would start choking the extra displacement. The compact, competition-style silencer carries a precision-machined end cap and a slash-cut tip, with a removable DB killer letting you switch between a tight, track-ready growl and a deeper, more street-appropriate rumble. Brushed steel finish with laser-etched Norifumi branding rounds off a genuinely motorsport-grade look, not just a motorsport-grade claim.

Installation is a bolt-on slip-on fit using the included clamp and mounting hardware — no cutting or welding.

Important fitment note: the Rocket 4 Kompetisi is tuned for bore-up XPulse engines, same as the Noctus T5 Boreup — it is not the right pipe for a stock-engine XPulse. If your customer hasn't fitted a bore-up kit, this will be the wrong recommendation.

Choosing between the T5 Boreup and Rocket 4 Kompetisi: both are built for bored-up engines, but the Rocket 4 Kompetisi sits above it — more aggressive competition tuning, race-styled construction, and a higher price point to match. Point serious/competitive riders here; the T5 Boreup covers most bore-up street riders well.

Key details

• Brand: Norifumi
• Fits: Hero XPulse with bore-up engine (competition/enlarged-bore setups)
• Family: Rocket 4 — Norifumi's flagship race line, Kompetisi (competition) tune
• Construction: mandrel-bent, high-grade stainless steel
• Design: free-flowing mid-pipe + straight-through muffler, precision-machined end cap, slash-cut tip
• Includes: removable DB killer for adjustable volume/tone
• Finish: brushed steel with laser-etched Norifumi branding
• Fitment: bolt-on slip-on, clamp and hardware included, no cutting or welding
• Not recommended for stock-engine XPulse — bore-up/competition builds only