Millennium Technologies is focused on the American V-Twin market with our Revolution Performance brand of bolt-on big bore kits, monster big bore kits, and high performance American V-Twin Services. Revolution Performance delivers state of the art engine products and services aimed at expanding the capabilities of American V-Twin shops and the experience of American V-Twin riders. The products and services include Bolt-On Big Bore Kits, Monster Big-Bore Kits Services, Crank Services, Case Services, CNC Cylinder Head Packages, and Complete Engine Assemblies.

For more information on our American V-twin products and services visit

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Revolution Performance Big Bore Kits

Famous Revolution Performance Big Bore Kits for your Harley-Davidson or Buell motorcycle.

Revolution V-Twin CNC Cylinder Head Port

Revolution Performance's various stages of CNC cylinder head porting and aftermarket parts create the ideal package to make big American V-Twin is running at its optimum performance levels to compliment any displacement size from stock all the way to our 131" kits.

American V-Twin Crankshaft Services

Revolution Performance offers crankshaft services for American V-Twin applications. We repair and/or balance crankshafts to precision tolerances using state of the art equipment.

Engine Case Services

Revolution also offers a full machine shop services like crank case boring (required for Monster Kits), cam clearancing, and Timken Bearing modifications.

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