TUSK High Pressure Radiator Cap with Temperature Gauge — 1.8 Bar for Honda CRF & Yamaha YZ, Raises Boiling Point

The Tusk High Pressure Radiator Cap with an integrated temperature gauge raises your coolant boiling point and shows real-time temperature so you can reduce boil-overs and monitor engine heat.

Designed for off-road and performance motorcycles, this replacement radiator cap delivers a higher pressure rating than most OEM caps and includes a compact dial that indicates coolant temperature at a glance. Available in 1.8 kg/cm² (25.6 psi) and 2.0 kg/cm² (28.5 psi) options, it fits a wide range of Honda CRF and Yamaha YZ models — see fitment guide for exact compatibility. Built from durable materials for repeated use on dirt bikes and motocross machines, the Tusk cap is intended as a practical upgrade to help riders manage heat under demanding riding conditions.

How does a higher-pressure cap help prevent boil-overs?

A radiator cap rated for higher pressure increases the coolant system’s boiling point, which reduces the chance of steam formation and coolant loss during heavy use. That means fewer overheating incidents caused by trapped air or rapid temperature spikes.

• Raises boiling point compared to standard OEM caps
• Reduces likelihood of coolant venting under load
• Helps maintain stable cooling during hard riding

Will this Tusk cap fit my Honda CRF or Yamaha YZ?

The cap is made to be compatible with many model years of Honda CRF450R (2002–2026), CRF250R (2004–2026) and a broad range of Yamaha YZ models including YZ450F (2003–2025) and YZ250 (1982–2026). Check the fitment image or your factory cap dimensions before purchasing to confirm a correct match.

• See fitment guide image for detailed model coverage
• Two pressure options available for different cooling needs
• Compare thread and sealing surface to your OEM cap

How accurate and useful is the built-in temperature gauge?

The top-mounted gauge provides a quick visual reference of coolant temperature so you can spot trends before they become problems. It’s intended for monitoring and awareness rather than precision laboratory readings.

• Instant visual check of running temperature
• Helps detect overheating patterns early
• Simple, rugged dial for off-road use

How do I install and maintain the Tusk radiator cap?

Installation is a straightforward swap: remove the OEM cap when the engine is cool and replace it with the Tusk cap, ensuring the seal seats properly. Regularly inspect the cap and surrounding neck for leaks, corrosion, or damaged seals to keep the cooling system reliable.

• Install only when engine and coolant are cool
• Hand-tighten until secure; avoid over-torquing
• Inspect seals periodically and replace if worn

Who is this for: The Tusk High Pressure Radiator Cap with Temperature Gauge is aimed at motocross riders, off-road enthusiasts, and anyone who wants a simple engine-cooling upgrade for Honda CRF or Yamaha YZ bikes. It’s especially useful for riders who push machines hard in hot conditions or who want a fast visual of running temperature without adding complex sensors.