Spark Exhaust Slip-On Konix Kawasaki Ninja 400 (2018-2023) Titanium Silencer GKA1001T

The Spark Exhaust Slip-On Konix for the Kawasaki Ninja 400 (2018-2023) is a road-legal, race-proven titanium silencer that sheds 1.5 kg from the stock system — dropping from 4.1 kg to just 2.6 kg — while delivering the kind of aggressive, free-breathing exhaust note that transforms how the Ninja 400 feels at every throttle opening. Hand-crafted in Italy, part number GKA1001T is built for riders who demand measurable gains without compromising on durability or finish quality.

Key Features

• Titanium silencer body and titanium end-cap — exceptional heat resistance, corrosion protection and a purposeful track aesthetic in one package.
• 1.5 kg weight saving (4.1 kg stock down to 2.6 kg) improves chassis dynamics, suspension response and overall agility.
• Removable dB killer allows you to switch between compliant road use and open, unrestricted track configuration in minutes.
• Approximately 105 dB at 5,500 rpm with the dB killer removed — a full, aggressive exhaust character that complements the Ninja 400's parallel-twin character.
• Complete mounting kit and exhaust springs included; no additional hardware required for a straightforward bolt-on installation.
• Made in Italy — every Spark Exhaust silencer is produced to the exacting standards that have made the brand a benchmark in the track-day and club-racing community.

Build Quality and Materials

Spark Exhaust specifies titanium for both the silencer canister and the outlet cap on the Konix. Titanium's superior strength-to-weight ratio means the canister walls can be kept thin — contributing directly to that 1.5 kg saving — while its high-temperature tolerance ensures the material maintains structural integrity and finish quality across repeated hard track sessions. The result is a silencer that looks as good at the end of a track day as it did at scrutineering.

Performance and Sound

The Konix slip-on is designed to optimise exhaust gas flow out of the Ninja 400's mid-pipe, improving throttle response and top-end breathing compared to the restrictive stock unit. Sound level is approximately 105 dB at 5,500 rpm with the dB killer removed. For riders seeking maximum performance gains, Spark Exhaust recommends pairing the Konix with a dedicated race map or a custom dyno tune to extract the full potential of the improved exhaust flow.

Fitment and Compatibility

The GKA1001T is a direct bolt-on slip-on silencer designed specifically for the following fitment:

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

It connects to the standard Ninja 400 mid-pipe without modification. All required springs and mounting hardware are included in the box.

Specifications