Part Number: man190160B (75mm), man190040B (79mm), man190060B (83mm)

Description: Turbo Tuff Crankshaft; 4340 Billet

Stroke: Available 75mm, 79mm, 83mm

Weight: 19.75lbs

Fitment: 08-14 Subaru WRX & STI Hatchback & Sedan

Details:

The Manley 4340 Billet 83MM Stroker Crankshaft is the answer to all your horsepower prayers.This crankshaft has been carved out of 4340 billet, and has endured a multi-step heat treatment process. Additionally, it has been stress relieved, shot peened, nitrated, and 100% magnafluxed.

But it doesn’t end there just yet. The Stroker Crankshaft also has special teardrop diagonal oiling, and has knife-edged counterweights.Because of all these fine elements, you’re going to be left with a strong, and happy motor built to handle all the boost and brapping. 

If you plan on being the king horsepower, do it with a Manley billet crankshaft.