Features:
- Designed to out-perform and outlast the factory valve springs
- Kit features lightweight, high-strength CrSi valve springs, H.T. steel base washers and titanium spring retainers
- Complete kit, everything you need to for a complete valve spring swap
Fit the models:
| YAMAHA |
YZF-R1 1000 |
1999 |
| YAMAHA |
YZF-R1 1000 |
1998 |
| YAMAHA |
YZF-R1 1000 |
2001 |
| YAMAHA |
YZF-R1 1000 |
2000 |
| YAMAHA |
YZF-R1 1000 |
2003 |
| YAMAHA |
YZF-R1 1000 |
2002 |
| YAMAHA |
YZF-R1 1000 S |
2001 |

Kibblewhite Precision Machining, Inc. (KPMI) is a U.S.-based manufacturer founded in 1939, specializing in high-performance valvetrain components for motorcycles and motorsports. Headquartered in Pacifica, California, KPMI is known for precision-engineered valves, springs, guides, and related parts, serving a global market including sportbikes, dirt bikes, and custom builds.
| Brand |
Model |
Year |
Name |
CC |
| YAMAHA |
YZF-R1 |
1998 |
|
1000 |
| YAMAHA |
YZF-R1 |
1999 |
|
1000 |
| YAMAHA |
YZF-R1 |
2000 |
|
1000 |
| YAMAHA |
YZF-R1 |
2001 |
|
1000 |
| YAMAHA |
YZF-R1 |
2002 |
|
1000 |
| YAMAHA |
YZF-R1 |
2003 |
|
1000 |
| YAMAHA |
YZF-R1 |
1998 |
|
1000 |
| YAMAHA |
YZF-R1 |
1999 |
|
1000 |
| YAMAHA |
YZF-R1 |
2000 |
|
1000 |
| YAMAHA |
YZF-R1 |
2001 |
|
1000 |
| YAMAHA |
YZF-R1 |
2001 |
Champions Limited Edition |
1000 |
| YAMAHA |
YZF-R1 |
2002 |
|
1000 |
| YAMAHA |
YZF-R1 |
2003 |
|
1000 |
| YAMAHA |
YZF-R1 |
2003 |
Flame |
1000 |