The facts.
| Brand | H2O Performance |
|---|---|
| Product Type | Additional water radiator kit |
| Fitment | Yamaha R6 RJ11 (2006–2007) |
| Installation | Supplements OEM radiator — no full replacement required |
| Construction | Race-grade, optimised fin and channel design |
| Intended Use | Road, touring, and track |
DescriptionThe whole story▼
Long days in the saddle or hard sessions on track demand a cooling system that keeps pace with you. The H2O Performance additional water radiator kit is engineered specifically for the Yamaha R6 RJ11 (2006–2007), supplementing the stock radiator to deliver meaningfully greater thermal capacity — so your engine stays in its comfort zone no matter how hard you push.
Key Features
- Substantially increases total cooling capacity by adding a high-performance radiator alongside the OEM unit — no full replacement required
- Optimised fin and channel architecture maximises heat dissipation at all engine speeds and ambient temperatures
- Precision fit for the Yamaha R6 RJ11 (2006–2007) — designed for a clean, factory-quality installation
- Race-proven construction handles the sustained thermal loads of trackdays, mountain passes and summer touring alike
- Reduces temperature spikes under hard acceleration, preventing power-limiting thermal protection from cutting in
- Lowers long-term thermal stress on engine internals, gaskets and oil, extending component life
All-Day Confidence, Whatever the Conditions
Riders who cover serious miles know that comfort is inseparable from reliability. When coolant temperatures climb on a hot afternoon commute or a demanding mountain road, the standard R6 RJ11 radiator is working at its limits — and so are you. The H2O Performance kit extends that limit significantly. By distributing the heat load across a supplementary radiator, operating temperatures remain stable and predictable, giving you one less thing to think about and letting you focus entirely on the ride.
The result is an engine that responds cleanly and consistently throughout a full day of riding, without the edginess that comes from thermal stress. Throttle response feels smoother, the power delivery is more linear, and the engine note settles into that reassuring evenness that only comes from a motor running well within its thermal envelope.
Performance on Track and Road
For trackday regulars, the benefit is immediate and measurable. Session after session, the coolant temperature gauge sits lower and steadier. There are no anxious cool-down laps, no need to manage your pace around heat cycles. On the road, the advantage is equally real — sustained high-speed touring, aggressive back-road riding and slow-moving summer traffic all become significantly less demanding on the cooling system.
H2O Performance designed this kit to bolt on as an addition to the existing cooling circuit, preserving all OEM functionality while adding substantial reserve capacity. Installation is clean and the fitment is exact for the RJ11 chassis.
Who This Kit Is For
- Owners of a Yamaha R6 RJ11 (2006–2007) who ride hard or in warm climates
- Trackday riders looking to remove thermal limitations from their sessions
- Sporty road riders who cover long distances and want engine protection to match their pace
- Anyone seeking to safeguard engine longevity by reducing sustained thermal stress
Fitment & Compatibility
This H2O Performance additional water radiator kit is designed exclusively for the following fitment:
- Yamaha R6 RJ11 — 2006 and 2007 model years
Please verify your frame code before ordering to ensure correct fitment.
Specifications
| Brand | H2O Performance |
|---|---|
| Product Type | Additional water radiator kit |
| Fitment | Yamaha R6 RJ11 (2006–2007) |
| Installation | Supplements OEM radiator — no full replacement required |
| Construction | Race-grade, optimised fin and channel design |
| Intended Use | Road, touring, and track |
FitmentWhich bikes this fits▼
- Yamaha R6 RJ11 (2006–2007)
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Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.