H2O Performance Additional Water Radiator Kit for Kawasaki ZX-6R (2007–2008)

On track, sustained lap after lap of hard riding pushes the Kawasaki ZX-6R's standard cooling system to its absolute limit. The H2O Performance additional water radiator kit is engineered precisely for that environment — supplementing the OEM radiator with a purpose-built aluminium unit that dramatically expands cooling capacity, stabilises coolant temperatures under race conditions, and protects every engine component when the pace gets relentless.

Key Features

• High-performance supplementary aluminium radiator that extends the existing cooling circuit — no full system overhaul required
• Enlarged cooling surface area for faster, more effective heat dissipation during sustained high-RPM use
• Optimised fin geometry and internal flow design to maximise heat exchange efficiency at racing speeds
• Precision fit for the Kawasaki ZX-6R model years 2007–2008 — direct, clean installation
• Keeps coolant temperatures stable through fast circuit sections, back-to-back sessions, and summer stop-and-go riding
• Reduces heat stress on the engine, seals, and ancillary components for longer service life

Built for the Track, Equally at Home on the Road

The ZX-6R's 599 cc inline-four is a high-revving engine that generates serious heat when you extract full performance from it. At a trackday or during aggressive road riding in warm conditions, coolant temperatures can climb into territory that forces the ECU to pull power and compromises throttle response. The H2O Performance kit solves this at the source: by adding a second aluminium radiator with an enlarged fin surface and an optimised flow path, the system dissipates heat more rapidly and provides a genuine thermal reserve. The result is consistent, confidence-inspiring performance whether you are on your third flying lap or crawling through summer traffic on the return journey.

Consistent Engine Response, Lap After Lap

Lower, more stable coolant temperatures translate directly into steadier throttle response and a smoother power delivery. Where the standard radiator alone can allow temperatures to creep up across a session, the H2O Performance kit keeps the engine in its optimum thermal window so that the last lap feels like the first.

Long-Term Engine Protection

Chronic heat cycling is one of the primary causes of premature wear to gaskets, seals, bearings, and cylinder head components. By reducing peak temperatures and moderating thermal spikes, this supplementary radiator actively extends the working life of your ZX-6R's engine — a worthwhile consideration for any bike used seriously on track.

Fitment & Compatibility

This kit is designed and manufactured specifically for the following fitment:

• Kawasaki ZX-6R — model years 2007 and 2008

The kit supplements the standard OEM radiator; no complete cooling system replacement is needed. Always verify your exact model year before ordering.

Specifications