Brand new +.25mm oversize aftermarket piston kit

Comes with what you see pictured!

Fits the Following:
  • ATC90A (76) ALL TERRAIN CYCLE, JPN, VIN# ATC90-1500001
  • ATC90A (77) ALL TERRAIN CYCLE, JPN, VIN# ATC90-1600001
  • ATC90A (78) ALL TERRAIN CYCLE, JPN, VIN# ATC90-1700001
  • ATC90A ALL-TERRAIN, JPN, VIN# US90-100122
  • ATC90K1A ALL-TERRAIN, JPN, VIN# US90-200001
  • ATC90K2A ALL-TERRAIN, JPN, VIN# ATC90-1300001
  • ATC90K3A ALL-TERRAIN, JPN, VIN# ATC90-1400001
  • CL90A MOTORCYCLE, JPN, VIN# CL90-106956
  • CM91A MOTORCYCLE, JPN, VIN# CM91-100001
  • CT90A (76) TRAIL 90, JPN, VIN# CT90-1700004
  • CT90A (77) TRAIL 90, JPN, VIN# CT90-1800008
  • CT90A (78) TRAIL 90, JPN, VIN# CT90-1900001
  • CT90A (79) TRAIL 90, JPN, VIN# CT90-5000001
  • CT90A MOTORCYCLE, JPN, VIN# CT90-100001
  • CT90K1A MOTORCYCLE, JPN, VIN# CT90-200000
  • CT90K2A MOTORCYCLE, JPN, VIN# CT90-300000
  • CT90K3A MOTORCYCLE, JPN, VIN# CT90-400000
  • CT90K4A MOTORCYCLE, JPN, VIN# CT90-1400001
  • CT90K5A MOTORCYCLE, JPN, VIN# CT90-1500001
  • CT90K6A MOTORCYCLE, JPN, VIN# CT90-1600001
  • S90A MOTORCYCLE, JPN, VIN# S90-111565 TO S90-142498
  • SL90A MOTORCYCLE, JPN, VIN# SL90-100001
  • ST90A MOTORCYCLE, JPN, VIN# ST90-1000002
  • ST90K1A MOTORCYCLE, JPN, VIN# ST90-1100001
  • ST90K2A MOTORCYCLE, JPN, VIN# ST90-1200003
We do our best to provide you with well-researched vehicle fitment and compatibility but we're not perfect.

Please message us directly or call us if you're unsure of this listing or need help finding the right parts for your ride. We’re open M-F, 9am to 5pm MST. 

Restocking Fee:
In the event that you order the wrong part for your machine and it ships, or if you are making a return, there is a %15 restocking fee to account for inconvenience and labor. The item must be un-used and in original packaging/condition. You will be responsible for paying your own return shipping cost as well as the cost of shipping out another part (if you are making an exchange). If your return or exchange is due to an error on our part, we cover those costs.

Expedited shipping options are available at checkout

Message us if you have any questions!

***Please double check fitment!! We are not responsible for incorrectly placed orders***