November 2025
Sent my previously built yz85 super mini 105 motor to be rebuilt do to it having wrong fuel run through it and and all I can say is this thing will run side by side a new 2024 yz250 ! ! Imo they are best in the business 👏
September 2019
James is extremely knowledgeable, and generous with his expertise.
December 2017
For over 16 years J.M.S built our motors from the amateur days up to the Pro. Whether it was a Yamaha or our Honda's there were always competitive and very reliable
