Product details:

Developed by Dynojet. Helps smooth out throttle response and eliminate long warm-up. All necessary parts and special tools are included with step-by-step instructions.This item fits the following models: 2006-2008 Yamaha XVS1100 V Star 1100 Custom2006-2008 Yamaha XVS1100A V Star 1100 Classic2006-2008 Yamaha XVS1100AT V Star 1100 Silverado