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March 18, 2019

Bringing Back the Past

A Few Favorite Tees Come to Life Once Again


CORONA, CA - March 18, 2019 - The Pro Circuit/Peak/Honda tee, Racing Development tee, and the Lady tee are a few old favorites amongst moto fans and have recently been released once again. These three refreshed designs are screen printed on quality garments and still hold true to the '90s feel Pro Circuit fans remember so much. The Racing Development tee and Pro Circuit/Peak/Honda tee also come with smaller left chest prints while the Lady tee offers a front pirnt only. These shirts are proof that classics never go out of style, so here is your chance to pick up some apparel that will help relive the good ol' days of moto.

Pro Circuit. We Race.



February 22, 2019

2019 YZ65/YZ85 VForce4R Reed Valve

Enhance Performance for the 2019 Mini Yamaha Models

CORONA, CA - February 22, 2019 - Recently, Pro Circuit stocked the new VForce4R reed valve system by Moto Tassinari for the 2019 YZ65/85. Moto Tassinari's VForce4R reed valve system is designed with a shallower petal angle which allows them to open further and with much less force than that of the stock reed system equating to better fuel flow and ultimately more power. The shallower reed petal angle also reduces the tension on the petals resulting in increased strength and durability keeping your minibike rider out on the track longer. Moto Tassinari's VForce4R reed valve system also incorporates an all-new manifold, reed cage and air guide to boost overall performance.


Over the years Moto Tassinari has made many upgrades to their VForce reed systems and the VForce4R reed block for the 2019 YZ65/85 is no exception. Pick up a VForce4R reed system at Pro Circuit for your minibike rider and ensure he or she is getting the best performance from their 2019 YZ65 or YZ85.


Pro Circuit. We Race.




All products manufactured and/or distributed by Pro Circuit Products, Inc. are offered and designed for use with standard machines. Pro Circuit Products, Inc. makes no claims as to the products effectiveness on modified machines. Pro Circuit Products, Inc. is the sole determiner of abuse, misuse, installation errors and modifications. We assume no liability for any errors in listings, specifications, part numbers, prices or model applications. Pro Circuit Products, Inc. reserves the right to change specifications, product descriptions, product quality, pricing and model applications at any time without prior oral or written notice and without further obligation.

Adding new components to your motorcycle (especially to the engine, suspension or braking system) may radically alter the acceleration, deceleration, handling and braking characteristics of your motorcycle. Ensure that all parts are installed and properly torqued per the instructions supplied with the part or to the motorcycle manufacturer's original specifications. Test the motorcycle with the new part(s) on level ground, at low speed, without any other vehicles or obstacles nearby, to ensure that it is working properly. Periodically recheck, adjust or replace the parts as may be necessary depending upon the terrain, use, mileage and rider input. Consult the instructions supplied with the part, or the motorcycle manufacturer's original specifications for further details. The failure to properly install, maintain, or familiarize yourself with the new part's use, and proper operation, may result in damage to the motorcycle, and/or a loss of control, resulting in serious injury or death. Buyers assume all risk for any and all damage caused to themselves, a third party and/or property by virtue of failure of these products. By installing and/or using a Pro Circuit Products, Inc. product, you hereby accept and understand these stated terms and conditions.


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