Spark Exhaust Slip-On MotoGP Titanium Silencer – Kawasaki Ninja 400 (2018-2023) GKA1002T

Shaving 3.2 kg from your Kawasaki Ninja 400 is not a marginal gain — it is a transformation you feel from the first corner. The Spark Exhaust Slip-On MotoGP (part number GKA1002T) swaps the heavy stock unit for a hand-crafted titanium canister that weighs just 0.9 kg, sharpens throttle response and delivers a race-bred exhaust note that suits everything from a Sunday blat to a full track day.

Key Features

• Dramatic weight reduction of 3.2 kg — from 4.1 kg down to 0.9 kg — improving chassis dynamics and handling balance throughout every ride.
• Full titanium silencer body and end cap: superb strength-to-weight ratio with long-term corrosion resistance built in.
• Removable DB-killer lets you dial the volume to suit road or circuit use — 105 dB at 5,500 rpm without the DB-killer fitted.
• Optimised internal geometry enhances throttle response and overall engine performance across the rev range.
• Complete fitting kit included — exhaust springs and all mounting hardware for a straightforward, tool-kit installation.
• Made in Italy to Spark's exacting race-series standards for quality and longevity.

Performance & Build Quality

Spark has applied the same manufacturing philosophy used on its MotoGP-inspired race exhaust programme to this slip-on for the Ninja 400. The silencer canister and its end cap are both formed from titanium, keeping the overall system mass to a minimum while resisting the heat cycles and vibration that degrade lesser materials over time. The reduction in unsprung and total vehicle weight translates directly into more agile steering, better suspension response and a livelier feel when pushing hard through fast, linked corners.

Throttle response tightens noticeably once the restrictive OEM canister is removed. For riders who want to extract every last fraction of performance, Spark recommends pairing the GKA1002T with a dedicated race map or a custom dyno tune to maximise the benefit of the freer-flowing exhaust path.

Sound & DB-Killer

The removable DB-killer system gives you genuine flexibility. Leave it in place for commuting or road riding where a subdued note is preferred, then pull it out for circuit sessions where the Ninja 400 can open up to its full 105 dB voice at 5,500 rpm. The transition between the two characters takes seconds and requires no additional tools.

Fitment & Compatibility

This slip-on silencer is designed as a direct-fit replacement for the following model:

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

All necessary exhaust springs and mounting hardware are supplied in the box, making fitment straightforward for any competent home mechanic.

Specifications