1706-3 Replacement reamer tool

Keeping your engine's breathing system in top shape is essential for preventing oil carryover and maintaining proper crankcase vacuum. This Jims replacement reamer is designed specifically for use with the Jims plus .030-inch breather reamer tool kit. It allows you to accurately oversize the breather gear bore on 1936 to 1999 Big Twin engines, excluding Twin Cam models. This is the replacement cutting tool only, ensuring you can continue to perform precision machining work on Knucklehead, Panhead, Shovelhead, and Evolution cases without needing to purchase an entirely new kit. It is sold individually and manufactured to Jims' exacting standards for professional engine builders.