Those are House of Horsepower cases.
THE FIRST manufacturer of 356-T6 aluminum cases.
We ran them on our AHDRA Modified class bike.
They are long out of business.
HILLSIDE MOTORCYCLE & MACHINE, INC.
HARLEY-DAVIDSON SPEED & SERVICE CENTER
5225 SOUTH MAIN ST., MUNNSVILLE, N.Y. 13409
315-495-6650 tel/fax www.hillsidecycle.com
Palmer's Performance Products
Complete H-D Machine Shop
Case Boring, Cylinder boring
Complete Cylinder Head Shop
Serdi and Goodson Cylinder Head Tooling
Super-Flow Flow Bench
Goodson HD Tooling Manufacturer
From Flatheads, to 2015 models.
"OVER 30 YEARS OF BUILDING HARLEY POWER"