Optimized Cooling for Maximum Engine Efficiency.
The Spoon Sports Low-Temperature Thermostat is engineered to keep your Honda Civic Type-R FK8 or FL5 (K20C1) performing at its peak, even under the most demanding conditions.
Developed and tested by Spoon Sports Japan, this thermostat reduces the coolant’s opening temperature, improving cooling system efficiency during high-performance driving.
Lower Operating Temperature
Opens at 68°C (compared to OEM 78°C) to allow coolant flow earlier, maintaining optimal engine temperatures under heavy load and boost.
Enhanced Thermal Stability
Prevents engine power loss due to heat soak — critical for track use, spirited driving, and tuned K20C1 engines.
Direct OEM Replacement
100% bolt-on fitment with no modifications required. Retains compatibility with OEM sensors and radiator hoses.
Race-Tested Reliability
Designed to withstand the high RPM and temperature demands of endurance and circuit racing.
Made in Japan Quality
Manufactured by Spoon Sports with strict quality control for consistency, precision, and durability.
Honda Civic Type-R FK8 (2017–2021)
Honda Civic Type-R FL5 (2023–Present)
The stock thermostat is tuned for normal street driving and emissions efficiency.
For performance builds or track sessions, it delays coolant circulation — causing higher operating temps.
By switching to Spoon’s low-temp thermostat, the coolant begins to circulate sooner, helping stabilize engine temperature and protect against detonation or overheating.
Product Name: Spoon Sports Thermostat – FK8 / FL5
Opening Temperature: 68°C
Made in: Japan
Brand: Spoon Sports
Part Number: 19301-FK8-000