Silicon-steel springs with high carbon content. heat-treated. dynamically balanced. kiln painted. designed and calculated for each specific application.
| CODE | SPRING SIZES | (K)
Spring stiffness |
| A - Ø | B mm | C - Ø |
| 29 6955.R0 | 45 | 77 | 4 | 9.6k |
| 29 7009.Y0 | 45 | 77 | 3.9 | 8.4k |
| 2911388.Y0 | 52.6 | 81 | 4.3 | 7.2k |
| 29 7047.W0 | 53.1 | 110 | 3.6 | 3.5k |
| 29 7045.Y0 | 53.5 | 115 | 3.7 | 3.8k |
| 29 7046.R0 | 53.7 | 110 | 3.9 | 4.7k |
| 2912658.W0 | 57.5 | 105.5 | 4 | 4.2k |
| 2918843.R0 | 57.5 | 115 | 4 | 4.3k |
| 29 7042.Y0 | 57.8 | 90 | 4.1 | 6.1k |
| 29 7043.R0 | 57.8 | 90 | 4.2 | 6.8k |
| 29 8323.G0 | 57.8 | 91 | 3.9 | 4.9k |
| 29 8324.V0 | 57.8 | 91 | 4 | 5.5k |
| 29 8325.A0 | 57.8 | 91 | 4.1 | 5.5k |
| 2916111.B0 | 57.8 | 103 | 4 | 6k |
| 29 8360.W0 | 57.8 | 118 | 4 | 3.3k |
| 29 7077.Y0 | 61.6 | 138 | 3.9 | 2.4k |
| 29 7087.R0 | 61.8 | 138 | 4 | 2.6k |
Modellek:
- PIAGGIO SFERA 50 2T (for Multivar and original variator - rigidity increase compared to original spring: +35%)
- PIAGGIO ZIP 50 2T <-1999 (for Multivar and original variator - rigidity increase compared to original spring: +35%)
