Engines and Components› Engines, Blocks and Components

S&S Cycle

S&S Cycle 84-91 BT w/ Stock Bore Super Stock Alternator Style Crankcase -Natural

$1,895.95

SKU: S0GE 31-0000

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 31-0000

Perfect for stock replacement and high performance applications, these crankcases offer some unique features. Besides being machined for a crank position sensor, they are also compatible with stock flywheel assemblies, primary covers, gearcovers and are clearanced for 38 amp alternator stators.

Natural, Stock Bore

MIA's Description

The S&S Cycle 31-0000 is a Super Stock® Engine Case designed for Harley-Davidson Evolution Big Twin motorcycles, featuring a 3.5" stock bore and EFI fitment.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandS&S Cycle
Part NumberS0GE 31-0000

Videos

S&S motorcycle engine compared

S&S motorcycle engine compared
S&S Cycle - Introducing the S&S Short Block - Part 1

S&S Cycle - Introducing the S&S Short Block - Part 1
S&S-Based Harley-Davidson Evolution V-Twin

S&S-Based Harley-Davidson Evolution V-Twin

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy