1981
Specialized Stumpjumper 1981
The Specialized Stumpjumper was the first production mountain bike sold in a bike shop. Mike Sinyard's team reverse-engineered the crude handmade Repack bikes into a reliable production machine that launched the mountain bike industry.
Mountain Bike
Shared Parts
Technical Specifications
| Type | Mountain Bike (Original) |
| Weight | 14.5 kg |
| Gears | 15-speed (3×5) |
| Fork | Chrome-moly steel |