Ferrea Valve Spring-SUB DU 28 20.8 87 35
We expanded our springs offering to include street bike, motocross and race bike applications, providing the best
possible valve-train combination for your motorcycle.
Ferrea’s motorcycle valve springs are made of premium grade chrome-silicon alloys. They are heat-treated and
stress-relieved to increase the spring’s life. Strict quality control procedures and cycle testing ensure consistency
from batch to batch.
| Type/Material/Application | Dual Spring -Special Alloy Turbo - Drag Racing |
| O.D. | 20.8 mm
28 mm |
| I.D. | 15.88 mm
20.8 mm |
| Seat Press. | 75 lbs
@39.4 mm |
| Open Press. | 200 lbs
@29.4 mm |
| Rate Inch | 317 lbs |
| coil Bind | 21.5 mm |
| Max Net Lift | 15 mm |
This product was added to our catalog on Wednesday 27 June, 2012.