ARC Billet Pro Series Connecting Rod Briggs 5 HP Flathead Stock Replacement  ARC's Pro Series rods feature our signature forced oil dipper for extra oiling to the crank pin.
CNC Machined from domestic 7075 T-651 aircraft grade aluminum and have been rigorously tested to field tested for all stock  and Super Stock classes.
For the Briggs model 13 horizontal flathead engine 3.875 center to center with a.4908" wrist pin bore   * The Enduro line of ARC Billet Rods do not have forced oil dippers *   
WKA,  IKF and AKRA legal for stock and super stock classes. Dimensions: .9985"X3.875"X.490"

Bearings and Bolts are Included

Rod bolt torque:  170 in/lbs Lubricated