MOOSE OFFROAD I15-5203B 2.0 Bar Radiator Cap with Temp Gauge — KTM SX/XC/EXC (2016-2023)

MOOSE OFFROAD — High-Pressure Cooling Performance, Real-Time Heat Monitoring, and Heavy-Duty Protection for Late-Model KTM Motorcycles

Take control of your engine’s thermal performance with the MOOSE OFFROAD I15-5203B Radiator Cap with Temperature Gauge. Engineered for modern KTM machines ranging from 2016 through 2023, this high-performance cap provides a dual-benefit upgrade: it raises your coolant’s boiling point and gives you a visual window into your engine’s temperature. Whether you are navigating tight singletrack on a 300 XC TPI or wide-open desert on a 450 XC-F, this cap is a critical tool for preventing boil-overs and engine damage.

With a racing-spec 2.0 Bar (29 PSI) rating, this cap keeps your cooling system pressurized under extreme heat loads, significantly outperforming standard factory caps. The integrated thermometer displays temperatures in both Celsius and Fahrenheit, serving as a vital safety indicator before you attempt to open the system. Constructed from high-quality aluminum alloy, zinc, and premium silicone rubber, the I15-5203B is built to resist spring fatigue and seal degradation, ensuring a leak-proof fit for years of hard riding.

• 2.0 Bar Pressure Rating: Elevates the boiling point of your coolant, allowing the engine to run harder in technical terrain without losing fluid.
• Built-in Temp Gauge: Provides immediate visual feedback of coolant temperatures in Celsius and Fahrenheit for better engine management.
• Safety First: Eliminates the guesswork of opening a hot radiator by showing you exactly when the system has cooled to a safe level.
• Precision Construction: High-quality aluminum and zinc materials prevent the common issue of rubber fatigue and spring failure.
• Direct Bolt-On Fit: Specifically designed for the radiator neck of late-model KTM SX, XC, and EXC-F models for a tool-free upgrade.
• Racer Tested: Ideal for everything from the 85 SX mini-racers to the 500 EXC-F dual-sport powerhouses.

Moto-House MX Pro Tip:

Modern KTMs are known for running hot in slow, technical sections. Upgrading to the MOOSE 2.0 Bar cap is one of the most effective ways to stop "puking" coolant on the trail. The I15-5203B is particularly useful for TPI and newer EFI models where monitoring temperature is key to identifying potential issues like a clogged radiator or a failing fan before they cause a DNF. Important: Never open the radiator cap while the engine is hot; use the built-in gauge to ensure the needle has returned to the safe "cold" range before servicing.

Pressure Rating	Readout	Primary Fitment
2.0 Bar (29 PSI)	Dual (°C & °F)	KTM Models (2016-2023)

FAQ Questions

Q) How does a 2.0 Bar cap help my bike?
A) By increasing the pressure, the boiling point of your coolant rises. This means your bike can reach higher temperatures in slow, technical riding without the coolant turning to steam and escaping the overflow.

Q) Is this a direct replacement for the KTM part?
A) Yes, it is a direct bolt-on replacement for the OEM cap but offers significantly higher pressure and the added benefit of a temperature gauge.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. We are the best shop in Central Florida with lightning-fast shipping.