Big Bore Kit TwinCam 106 Cid 3.875 Bore 4.500 Stroke Cranks HD Cylinders / DRE. This is for Twin Cams with a 4.500 stroke cranks. New S&S Forged piston kit. Come with Custom Finished HD OEM Cylinders done in house Rings Will be fitted. No case boring required Will for all years Of Twin Cams 99 on up as long as the installed crankshaft is a 4.500 Stroke this combo makes 106 cid on.
We have seen up to 128 foot lbs of torque while tuning on our Dynojet 250 using this combo.