Yamaha RMAX Thermostat Bypass with Hardware Yamaha RMAX Thermostat Bypass with Hardware The Yamaha RMAX Thermostat Bypass fits all 2020+ RMAX | RMAX 4 machines. It is custom made to install between the engine block and OEM thermostat housing providing access to pre-thermostat coolant. ... MSRP: Was: Now: $99.99 Add to Cart
