THIS KIT HAS EXTRA PARTS YOU WON'T USE,, THIS WAY IT WILL WORK FOR DIFFERENT MODELS. 200009 THIS WILL WORK FOR ALL YEARS OF 50'S 70'S AND TRX90'S PICK_BORE_SIZE SEE DROP BOX BY ORDER BUTTON ALL/YR/T/G/SPICK_BORE_SIZE: 39MM_291C/R&R/20000947MM_20000951MM_ALL/YR/T/G/S+290G52MM_ALL/YR/T/G/S+290G54MM_1004D