Jims Cylinder Bore Jig Set for Harley-Davidson

Used to drill worn threads on cylinder studs up to 4" inside diameter in crankcases.

This tool maintains the center line and perpendicularity.

Can be used with the engine in the frame with an angle head drill.

Note: Helicoils and similar are not included.

Fits: Evo Big Twin (84-99 models); Sportster XL (86-22 models); Buell (87-10 models) (except 1125R)