



THERMOBOB - THERMOSTAT - YAMAHA 14-26 YZ450F / 16-26 YZ450FX / 16-26 WR450
This kit fits the Yamaha YZ450F (2014 and newer) and the 2016 and newer Yamaha WR450F… please see other products for the version that fits other motorcycles.
The YZ and WR450s are popular choice as snow bikes, and in those applications, the lack of factory cooling system control leads to cold coolant temps. The EFI system ends out overfueling, thinking the bike is constantly in ‘warm-up’ mode. The Thermo-Bob 3 is a machined aluminum housing with a 180°F (82°C) thermostat inside, and modifies your cooling system to operate like automotive systems have for decades… keeping coolant flowing all the time through the engine, but not through the radiators until it is up to a selected temperature.
Original: $142.05
-70%$142.05
$42.62Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
This kit fits the Yamaha YZ450F (2014 and newer) and the 2016 and newer Yamaha WR450F… please see other products for the version that fits other motorcycles.
The YZ and WR450s are popular choice as snow bikes, and in those applications, the lack of factory cooling system control leads to cold coolant temps. The EFI system ends out overfueling, thinking the bike is constantly in ‘warm-up’ mode. The Thermo-Bob 3 is a machined aluminum housing with a 180°F (82°C) thermostat inside, and modifies your cooling system to operate like automotive systems have for decades… keeping coolant flowing all the time through the engine, but not through the radiators until it is up to a selected temperature.





















