All Balls Racing rear shock seal head kit 37-1116 Yamaha YZ 100/125/250/465/490, IT 175

Complete Rear shock seal head assemblies, ready to install into the shock body, featuring:
- 6061-T6 Aluminum body
- Weight reduction over earlier OEM seal heads
- Superior sealing technology
- Internal guide bushing / washer
- Air bleed hole to help remove air from the oil reservoir during installation
- Double-lip oil seal design keeps out dirt and keeps friction low
- O-Ring
- Redesigned dust seal
- Snap ring and top out bumper