Spark Exhaust Konix Full System Stainless Steel / Titanium Kawasaki Ninja 400 (2018-2023) GKA8823T

Shave 3.1 kg from your Kawasaki Ninja 400 in a single bolt-on upgrade. The Spark Exhaust Konix full system replaces the entire OEM exhaust — header and silencer — with a stainless steel header and a titanium Konix slip-on silencer, dropping the combined exhaust weight from 6.6 kg to just 3.5 kg and transforming chassis response from the first corner.

Key Features

• Massive 3.1 kg weight saving (6.6 kg stock down to 3.5 kg) sharpens handling and improves power-to-weight ratio immediately.
• Titanium Konix silencer with titanium end cap — an aggressive 107 dB exhaust note at 5,500 rpm that announces your arrival without compromise.
• Removable dB killer included — dial the volume back for road riding or remove it entirely for track days, all in minutes.
• Stainless steel header ensures long-term resistance to heat cycling, corrosion and the rigours of daily use.
• Complete mounting hardware and exhaust springs supplied — straightforward installation with no hunting for extra parts.
• Handcrafted in Italy using premium materials and the latest manufacturing processes, ensuring consistent quality on every unit.

Performance and Build Quality

Spark Exhaust engineers the Konix system specifically for the Ninja 400 platform, optimising header pipe diameter and collector geometry to improve throttle response and mid-range pull. The stainless steel header withstands sustained high temperatures without discolouring or warping, while the titanium silencer body keeps unsprung and overall mass to an absolute minimum. The titanium end cap is more than a cosmetic touch — it contributes to the overall weight reduction while giving the system a purposeful, race-derived aesthetic that suits the Ninja 400's aggressive bodywork.

At 107 dB the Konix system produces a deep, characterful note that rewards open-throttle acceleration without becoming fatiguing at motorway speeds when the dB killer is installed. For track use, removing the dB killer takes the system to its full, uncorked voice. Both configurations are supported out of the box — the dB killer ships with the system.

Road and Track Use

Whether the Ninja 400 is your daily commuter, weekend canyon carver or track-day weapon, this system adapts. The removable dB killer keeps the system socially acceptable on public roads and in paddock noise-limit zones, while the substantial weight reduction — concentrated low and centrally in the chassis — noticeably improves agility. For maximum performance gains, Spark Exhaust recommends pairing the system with a dedicated race map or a rolling-road tune to unlock the full potential of the freer-flowing exhaust.

Fitment and Compatibility

This full exhaust system is designed as a direct, bolt-on replacement for the following model:

• Kawasaki Ninja 400 — model years 2018, 2019, 2020, 2021, 2022, 2023

Specifications