Millennium Technologies Announces M-Spec Big-Bore Kits and Performance Services

Race-developed big-bore kits and CNC porting services from Millennium Technologies.

M-Spec big bore kit
Millennium Technologies M-Spec big-bore kit.©Motorcyclist

Plymouth, WI – Millennium Technologies, the leader in Advanced Engine Solutions, is proud to announce M-Spec. Developed over 20 years of racing experience, M-Spec is the world's largest offering of big bore kits, CNC 4-stroke cylinder head ports, and 2-stroke performance services for all disciplines of powersports vehicles.

Millennium Technologies CNC cylinder head ports.
Millennium Technologies CNC cylinder head ports.©Motorcyclist

Leading Millennium Technologies’ M-Spec development is Tom Morgan. Considered one of the best engine builders in the country according to Millenium, Tom has won five AMA National MX Championships and is a five-time AMA Mechanic of the year winner. Tom works in house at Millennium Technologies developing new M-Spec Kits, refining existing packages, and working with our racing partners.

Millennium Technologies is constantly working with its racing partners such as KWS Motorsports, Jared Mees Racing, Ron Hamp Cycle, Cycle Trader/Rock River Yamaha, Kyle Chaney Racing, and the Millennium Technologies/KWR Superbike team to develop new M-Spec Engine Kits. Through these partners, Millenium is able to develop and test solutions with a large sample size and real-time results.

Kyle Wyman on the Millennium Technologies/KWR team Yamaha Superbike.
Kyle Wyman on the Millennium Technologies/KWR team Yamaha Superbike.©Motorcyclist

“Racing is in our DNA at Millennium Technologies," said Millennium Technologies Owner Chris Hackl. "For the last 20 years we have worked with race teams both big and small to develop solutions for their engine programs. We very happy to be able to offer all of that performance experience to our customers.”

Learn more about all of the M-Spec Performance Products and Services for Motocross, Flat Track, ATV, UTV, and Sportbike Applications at