Our Bolt-On Big Bore kits for Harley-Davidson® Twin Cam engines have not only proven themselves on the dyno but in the real world also! Tired of the headache of trying to piece together engine packages that may or may not work the way you planned? We have done the research for you and even packaged the proper components at significant savings over buying them separately!

For the really BIG horsepower numbers, Stage 3 kits are available in bigger bore sizes. These kits are custom tailored to your needs and budget so call for details.

114 cid Power Packages Throttle body, lifters and roller rocker arms not included. When ordering call us at 866-892-2109 to clear up any questions and provide us with details about your bike. This will aid us in giving you proper porting. Our sales staff will also follow up online orders with a phone call to make sure everything goes smoothly for you. Available for both Gear Drive and Chain Drive! Buy Online or Call today toll-free 1-866-892-2109!

GEAR DRIVE PACKAGES 99-06 Twin Cam Stage 2 114" Gear Drive Package Customer supplied cylinder heads Throttle Body, roller rocker arms, lifters not included TC Stage 2 Cylinder Heads TC 114 cid Revolution Cylinders Gear Drive Cams - specific cam depends on your model bike 99-06 Full Gear Set Gear Drive Install Kit Precision™ EMS Kit (99-01 models do not include this kit - price will be adjusted accordingly) 99-up TC Adjustable Pushrods Twin Cam Quick Install Lower Tubes 99-up Twin Cam Top End Gasket Kit Black Highlight, Black or Silver $3745.71 99-06 Twin Cam Stage 3 114" Gear Drive Package Customer supplied cylinder heads Throttle Body, roller rocker arms, lifters not included TC Stage 3 cylinder head porting TC 114 cid Revolution Cylinders Gear Drive Cams - specific cam depends on your model bike 99-06 Full Gear Set Gear Drive Install Kit Precision™ EMS Kit (99-01 models do not include this kit - price will be adjusted accordingly) 99-up TC Adjustable Pushrods Twin Cam Quik Install Lower Tubes 99-up Twin Cam Top End Gasket Kit Black Highlight, Black or Silver $4007.71 CHAIN DRIVE PACKAGES 99-06 Twin Cam Stage 2 114" Chain Drive Package Customer supplied cylinder heads Throttle Body, roller rocker arms, lifters not included TC Stage 2 Cylinder Heads TC 114 cid Revolution Cylinders Chain Drive Conversion Cams - specific cam depends on your model bike Chain Drive Conversion Kit Precision™ EMS Kit (99-01 models do not include this kit - price will be adjusted accordingly) 99-up TC Adjustable Pushrods Twin Cam Quick Install Lower Tubes 99-up Twin Cam Top End Gasket Kit Black Highlight, Black or Silver $3703.74 99-06 Twin Cam Stage 3 114" Chain Drive Package Customer supplied cylinder heads Throttle Body, roller rocker arms, lifters not included TC Stage 3 cylinder head porting TC 114 cid Revolution Cylinders Chain Drive Conversion Cams - specific cam depends on your model bike Chain Drive Conversion Kit Precision™ EMS Kit (99-01 models do not include this kit - price will be adjusted accordingly) 99-up TC Adjustable Pushrods Twin Cam Quik Install Lower Tubes 99-up Twin Cam Top End Gasket Kit Black Highlight, Black or Silver $3953.74