Hot Cams Valve Spring And Retainer Kit
If you’ve bumped up your Raptor’s performance with the stage 2 kit, make sure you maintain that performance and install the Hot Cams Camshaft Spring Kit to match.
With the heavy duty springs and quality retainers Hot Cams puts into this kit, you’ll be able to match your valves’ closing rates to the more aggressive profiles of high performance cams, thereby eliminating valve float at high rpm and keeping your engine in good condition.
Hot Cams designs these specifically for Yamaha Raptors and installation is as straightforward as any other valve springs, making the Camshaft Spring Kit one of the most important modifications you can do to your Raptor.
Specs:
- Heavy duty spring kit
- Helps reduce valve float at high rpm
- Required for the installation of the stage 2 kit for the Raptor 660.
- Includes valve springs, and retainers.
SPECS
- Exhaust Spring Coil Bind17.780mm
- Exhaust Spring Installed Force55lb
- Exhaust Spring Installed Height30.607mm
- Exhaust Spring Maximum Lift11.430mm
- Exhaust Spring Open Force145lb
- Exhaust Spring Open Height8.763mm
- Exhaust Spring Rate270in-lb
- Intake Spring Coil Bind17.780mm
- Intake Spring Installed Force55mm
- Intake Spring Installed Height30.607mm
- Intake Spring Maximum Lift11.430mm
- Intake Spring Open Force145mm
- Intake Spring Open Height8.763mm
- Intake Spring Rate270in-lb
Fits the following models:
YAMAHA RAPTOR 660 2001-2005