Spark Exhaust Konix EVO Full System Stainless Steel & Titanium – Kawasaki ZX-4RR (2023-2026) GKA8850

Shedding 3.8 kg from the stock exhaust weight is the kind of gain that reshapes how a motorcycle handles at corner entry, and the Spark Exhaust Konix EVO full system delivers exactly that for the Kawasaki ZX-4RR. Built around a stainless steel header and a titanium slip-on silencer with a carbon end cap, this Made in Italy system is engineered for riders who demand race-ready performance without compromising street usability.

Key Features

• Proven 3.8 kg weight saving over the OEM system — from 9.4 kg down to 5.6 kg — directly improving chassis dynamics, turn-in response and acceleration feel.
• Stainless steel header construction delivers exceptional heat resistance and long-term durability under sustained high-rev track use.
• Titanium Konix EVO silencer keeps mass centralised and low while generating an aggressive, characterful exhaust note suited to the ZX-4RR's inline-four character.
• Carbon end cap adds structural stiffness and a purposeful race aesthetic without adding unnecessary weight.
• Removable dB killer included — run open on circuit for approximately 104 dB at 5,500 rpm, or install it to bring noise levels in line with road and trackday regulations.
• Complete mounting kit and exhaust springs included for a straightforward, bolt-on installation.
• Crafted in Italy to Spark Exhaust's exacting manufacturing standards — the same heritage trusted by circuit racers across Europe.

Track Performance & Engineering

On circuit, every kilogram removed from a motorcycle's unsprung and reciprocating mass pays dividends in lap time. The Konix EVO full system attacks that number aggressively: the stainless steel header is profiled to optimise exhaust gas scavenging across the ZX-4RR's rev range, promoting sharper throttle response out of slow corners where the inline-four needs to be on the pipe quickly. Paired with the titanium silencer, the system keeps weight biased centrally, preserving the neutral handling balance that makes the ZX-4RR so rewarding to ride at the limit.

The removable dB killer means you can run the correct noise specification for your trackday or race series on Saturday and switch to full open sound for dedicated test days. No tools-intensive modifications, no compromises.

Road Use & Mapping

With the dB killer fitted, the Konix EVO is a viable road system that transforms the visual and acoustic presence of the ZX-4RR without requiring any immediate fuelling changes. That said, to extract the full performance benefit — particularly peak power and mid-range torque — Spark Exhaust and Inter-Pace strongly recommend a bespoke race map or a dyno-tuned fuel injection remap. A correctly mapped ZX-4RR running this system will respond more crisply throughout the rev range and deliver noticeably stronger drive from corner exit to the next braking point.

Fitment & Compatibility

This full exhaust system is designed and tested to fit the following motorcycle:

• Kawasaki ZX-4RR — model years 2023, 2024, 2025 and 2026

Part number: GKA8850T. If you are unsure whether this system fits your specific variant, contact the Inter-Pace team before ordering.

Specifications