Jims Cylinder Torque Plate Kit for Harley-Davidson

Used with 4.000" to 4.060" bores with OEM bolt pattern.

To accurately measure cylinder dimensions, torsion plates are essential.

These plates simulate the stress conditions experienced during boring and honing, preventing distortion of the cylinder walls once they are returned to their original state.

The plates are laser engraved with the correct twisting sequence.

Fits: Twin Cam > 99-17