Briggs 5hp Flathead

Manufactured from a centrifugally spun cast iron alloy featuring a high tensile strength of 48,000 psi to 53,000 psi which insures ease of installation, trouble free boring or machining. Dimensions 4.500" X 2.530" X 2.815"

ARC Billet Alloy Crankshaft, 3.00" Stroke X 1" Rod Journal. Designed with extra cam clearance om counter weights for the ZR4 and similiar aftermarket blocks. Will not fit Briggs Raptor and Blockzilla applications. 

ARC Billet Chromoly Crankshaft, 3.00" Stroke X 1" Rod Journal. Designed with extra cam clearance om counter weights for the ZR4 and similiar aftermarket blocks. Will not fit Briggs Raptor and Blockzilla applications. 

CNC machined toughest material ever used for small 4 stroke engines. Features a true 1/8" journal radius for strength and durability. Also features airplane wing style counter weights that are proportionaly designed for superior balance. ARC's...

Billet Crankshaft 2.437 Stroke with a .9985 Journal.This alloy crank features a true 1/8" journal radius for added strength and durability. Crank is balanced to be used as a stock replacement crank for the 5 HP Flathead modified.   Recommended...

Billet Hardened 4340 Chromoly Crankshaft   2.437 Stroke with a .9985 Journal.This crank features a true 1/8" journal radius for added strength and durability. Crank is balanced to be used as a stock replacement crank for the 5 HP Raptor Flat...

ARC Billet Stroker Crankshaft Hardened 4340 Chromoly 2.587"(+.150") X .9985" Journal for the Briggs 5HP Model 13 Flathead Engine.   Recommended flathead application only.

Billet Alloy Crankshaft  +.200" Briggs Model 13 Flathead. 2.637" total stroke. Machined from the hardest, toughest material ever used for small 4 stroke engines. 1" journal with a 3/4" PTO shaft. Recommended flathead application only.

ARC Racing Billet Crankshaft +.200"(2.637) stroke for the Briggs 5hp Model 13 flathead Engine. Made from hardened 4340 Chromoly Steel to the quality standards you have come to expect from ARC Racing. True 1/8 radius crank pin(.998 diameter) and 3/4" PTO...

ARC Billet Alloy Stroker Crankshaft for the Briggs 5hp Model 13 or Blockzilla Junior Dragster Engines. 2.887"(+.450") stroke with a .875" rod journal and 3/4" PTO. 

ARC Billet Alloy Stroker Crankshaft for the Briggs 5hp Model 13 or Blockzilla Junior Dragster Engines. 2.887"(+.450") stroke with a .875" rod journal and 3/4" PTO.   This crank has not been cut for camshaft clearance. Some clearancing may be...