Team MicroBilt PRBC Ronnie Stewart Racing

Fill out the form below to receive your 10% Off Coupon Code.




RM-Z Full Systems

The RS-4 with its proven championship design that is often copied but never duplicated.

Since the RM-Z450’s last championship in 2016, Yoshimura has been helping power such riders as Ken Roczen, Ryan Dungy, James Stewart, Brock Tickle and others to the top of the podium, proving great engineering of both the RM-Z and Yoshimura’s RS-4 exhaust.


Race-Spec Engine Performance

Engine tuning has been the passion of Yoshimura since the very beginning. Pops Yoshimura started 4 stroke engine performance over five decades ago. At Yoshimura, building engines with experience and precision is what this brand is about, and today is no different.

Team MicroBilt PRBC Yoshimura Suzuki Racing Logo

Founded in 2015 to support passionate, talented supercross and motocross riders, Team MicroBilt PRBC was drawn to our riders by our shared respect for the grit, determination, commitment and perseverance that lead to success - on the motocross course, in business and in life.

MicroBilt and its subsidiary PRBC are 35+ year leaders in the risk management, data and alternative credit marketplace. For the millions of Americans shut out of the traditional credit market - and the companies who want to do business with them - our companies are the premiere providers of the tools and data that power the rapidly growing alternative credit economy.

We believe Team MicroBilt PRBC embodies the spirit behind the work we do. We invite you to join us in supporting our talented riders as they demonstrate the power of drive at both the Monster Energy Supercross and Lucas Oil Pro Motocross series.




Ronnie Stewart

Team MircoBilt PRBC Facebook Team MircoBilt PRBC Instagram


Ronnie Stewart Facebook Ronnie Stewart Instagram Ronnie Stewart Instagram