TSP CNC Head Insert 2023+ KTM Husky Gas Gas 250cc XC SX TX EX TBI Models CRF250RX Measure 2 1 8" L x 5 8" Forks Measure 2 1 8" L x 5 8" W (54 x 16mm) Kit Includes: SKU* Clutch Springs Clutch Arms Secondary Helix Premium Drive Belt CKSDPO146C S CKSDPO146C S2 S CKSDPO146 S CKSDPO146 S2 S CKSDPO147C S CKSDPO147C S2 S CKSDPO147 S CKSDPO147 S2 S CKSDPO148C S2 S CKSDPO148 S2 S CKSDPO149C S CKSDPO149C S2 S MBGRPO148C S2 S MBGRPO148 S2 S MBGRPO149C S2 S MBGRPO150 S2 S MBPO148 S2 S MBPO149C S MBPO149C SC S MBPO150 S2 S MBPO151C S2 S SDPO146C S2 S SDPO146 S2 S SDPO147C S2 S SDPO147 S2 S SDPO148C S2 S SDPO148 S2 S SDPO149C S2 S SDPO149 S2 S 2023+ KTM SX XC 250 TBI 500′ to approximately replicate a medium compression head at sea level