|  
CLICK HERE to customize your own Yamaha
DYNO JET POWER COMMANDER APPROVED TUNING CENTER 
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
- Premium valve springs made from H-11 tool steel
- Designed for maximum- and racing- performance installations
- For use with up to .650” valve lift
- 180-185 lb. of seat pressure at 1.800” installed height
- Sold in a set of four, springs only
- Use retainers DS-199742 or DS-199743 for best results
NOTE: It is the installer’s responsibility to check for coil bind.
|
|
|
|
|
|
|
|
|
