Trail Tech 732-FN4 TTV Temperature Switching Digital Radiator Fan Kit Fits: KTM 03-05 250EXC 400EXC 450EXC 450MXC 525EXC 525MXC 2006 400EXCG 450EXCG 450XCG 525EXCG 525XCG 2007 400XCW 450EXC 525XC 525XCW 525EXC Trail Tech's TTV Temperature Switching Fan Kit monitors your KTM's cooling system performance and automatically activates the fan to keep engine at optimum temperature range Featuring a custom adjustment of temperature trigger point with no cutting of fluid lines the kit includes: 4" SPAL Fan TTV Temperature Gauge Radiator Bracket Temperature Sensor and a Wire Harness Specs: Temp Sensor Range: -40 Degree C/F - 300 Degree C/575 Degree F Fan Air Flow: 147 CFM Power Requirements: 12V DC Only Amp Draw: 3 Amps Watt Draw: 30 Watts Physical Dimensions: 210 x 120 x 85mm (8.2 x 4.7 x 3.3") Physical Weight: 23 oz. (652g) Screen Size: 23.7x13.6mm (.93x.53in)