
Attic Rat Performance Works · Tulsa, Oklahoma
The Official Record of Honda Valkyrie GLH Performance Builds.
1997 – 2003.
Featured Entries
No bikes in the registry yet
Submit the first bikeClassification System
The first six Valkyries Bob built with the GLH engine package. The rarest and most historically significant bikes in the registry — the builds that started it all.
VIN confirmed against original Attic Rat Performance Works invoice records. Ownership chain documented. GLH engine package installation authenticated.
Submitted by an owner or enthusiast. Awaiting VIN confirmation and cross-reference against original invoice records. Pending verification review.

The Origin
"Go Like Hell wasn't just a name. It was a promise — that your Valkyrie would perform like nothing else on the road."
From his shop in Tulsa, Oklahoma, Bob Smith engineered and installed the GLH performance package on Honda Valkyrie motorcycles from 1997 to 2003. Between 100 and 120 bikes were ever modified — making every GLH Valkyrie a rare piece of American motorcycle history.
The original six builds were slightly different from later production packages, representing the earliest evolution of the GLH specification. This registry exists to document, verify, and preserve the complete history of every bike Bob touched.
Read the Full History
Is Your Valkyrie a GLH Bike?
If you own or know of a Honda Valkyrie with a GLH engine package, submit it for inclusion in the registry. We'll cross-reference against original Attic Rat Performance Works invoice records and work toward full verification.
Free to submit. No account required.