-
Wide Tire Kits
-
Swingarms
-
Wheels & Tires
-
Suspension
-
Accessories
$129.95
| /
When installing an extended swingarm on your bike, you drastically alter the leverage ratio and load on your rear shock. In order to maintain the correct suspension action, a new spring is mandatory. At Trac we have a complete selection of springs for almost all sportbikes. For street bikes, a stiffer spring is almost always necessary to compensate for the longer wheelbase of an extended arm, For the serious drag racer however, sometimes a softer spring will allow for the maximum performance. Below is spring selection chart to illustrate the rates recommended.
| SWINGARM EXTENSION | DRAG RACE | DRAG RACE | STREET | STREET |
| LENGTH |
175 lbs Rider |
250 lbs Rider |
175 lbs Rider |
250 lbs Rider |
| 2 INCH | 10.7kg | 11.6kg | STOCK | 13.4kg |
| 4 INCH | 10.7kg | 11.6kg | 12.5kg | 14.3kg |
| 6 INCH | 11.6kg | STOCK | 13.4kg | 15.2kg |
| 8 INCH | STOCK | STOCK | 14.3kg | 16.1kg |
| 10 INCH | 12.5kg | 13.4kg | 15.2kg | 16.1kg |
| 12 INCH | 13.4kg | 14.3kg | 16.1kg | 17.9kg |
| 14 INCH | 13.4kg | 14.3kg | 17.9kg | 19.6kg |
| 16 INCH | 14.3kg | 15.2kg | 17.9kg | 19.6kg |
