Diamond's technically advanced original tyre heaters - as used by factory teams, World, European and British Champions. 1000cc size - For 120/17" front & 195-205/17" rear tyres. Professional tyre heaters developed with the help of of the worlds top tyre technicians. Our tyre heaters are manufactured using Nomex® high temperature fabric incorporating high performance elasticated sides to aid in superior fitment and helping keep heat in the sidewall and rim, even on windy days, and our new outer pull tabs for ease of removal when wearing gloves before a track session. Also new for 2020 are the addition of transparent display windows on each warmer, making tyre type, or even tyre warmer identification simple. They are fitted with a tri-stage thermostat that gradual.