H2O Performance supplementary water radiator kit for Yamaha R1 RN32 and R1M RN49 2015–2019
02 · Data & docs

The facts.

Technical data
BrandH2O Performance
Product typeSupplementary water radiator kit
Construction materialAluminium
Fin designRacing-specification, high-flow
IntegrationSupplements OEM cooling circuit — no full system replacement required
FitmentYamaha R1 RN32 / R1M RN49 (2015–2019)
Intended useRoad, track days, racing
DescriptionThe whole story

When your Yamaha R1 or R1M is being pushed hard on track — lap after lap, session after session — the stock cooling system is working at its absolute limit. The H2O Performance supplementary radiator kit adds a high-efficiency cooling surface directly to the OEM circuit, delivering measurably lower coolant temperatures, greater thermal headroom, and the consistent engine behaviour that serious track riding demands.

Key Features

  • Supplementary high-performance radiator that expands the factory cooling circuit without replacing it
  • Racing-specification fins engineered for maximum heat dissipation and high coolant flow efficiency
  • Robust aluminium construction — lightweight and fully race-worthy
  • Precision fit for Yamaha R1 RN32 / RN49 and R1M, 2015–2019
  • Eliminates temperature spikes during long stints, hot laps, and demanding summer road rides
  • Keeps the crossplane engine operating within its optimal thermal window across every rev range

Engineered for the Track, Proven on the Road

The RN32/RN49 generation R1 and R1M combine a high-revving crossplane inline-four with sophisticated electronics and aggressive chassis geometry — a combination that generates substantial heat under racing conditions. The H2O Performance kit addresses this directly: by supplementing rather than replacing the OEM radiator, it increases total cooling capacity without disrupting the factory architecture. The result is a demonstrably cooler, cleaner-running engine that recovers faster between sessions and resists thermal-induced power drop-off throughout a full track day.

Real-World Gains After Fitment

  • Stable coolant temperatures across all load conditions, including full-throttle exits
  • Fewer temperature peaks during extended high-speed stints
  • More consistent power delivery and smoother throttle response
  • Quieter engine behaviour and shorter thermal recovery time between sessions
  • Significantly reduced thermal stress on engine internals, seals, and the wider cooling system

Who This Kit Is For

This kit is the logical next step for any R1 or R1M owner who regularly attends track days, competes at club or national level, runs a tuned or power-upgraded engine, or simply wants the confidence of additional thermal safety on long, fast road rides. If you demand maximum reliability from your RN32 or RN49, this is one of the most effective single upgrades you can make.

Fitment & Compatibility

  • Yamaha YZF-R1 RN32 — 2015, 2016, 2017, 2018, 2019
  • Yamaha YZF-R1M RN49 — 2015, 2016, 2017, 2018, 2019

Specifications

Attribute Detail
Brand H2O Performance
Product type Supplementary water radiator kit
Construction material Aluminium
Fin design Racing-specification, high-flow
Integration Supplements OEM cooling circuit — no full system replacement required
Fitment Yamaha R1 RN32 / R1M RN49 (2015–2019)
Intended use Road, track days, racing
FitmentWhich bikes this fits
  • Yamaha R1 / R1M RN32/RN49 (2015–2019)
07 · Support

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How long does delivery take?

We’re based in Germany. Standard delivery goes by DHL and national postal services and takes about 2–5 days within Germany, 1–2 weeks within the EU and 2–6 weeks outside the EU. Need it sooner? Express delivery reaches most of the world within a few days — just choose it at checkout where available.

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Yes, we ship to over 130 countries. Prices, taxes and delivery times for your destination are calculated automatically at checkout.

Will I have to pay customs or import duties?

Within the EU, no — our prices already include all duties and EU VAT. For deliveries outside the EU (e.g. Switzerland, the UK or the USA), your order may be subject to import duties and taxes set by your country. These are collected by the carrier when your parcel arrives, aren’t included in our prices, and are outside our control.

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08 · Paddock

Before you go.

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