The WORKS Pro Launch Start Device Red, model 12-331, is designed for positive engagement and consistent release during race starts. Its spring-less design features an “easy set by rider” start trigger and is CNC machined exclusively from aircraft-grade aluminum. The complete assembly weighs 50 grams for a lightweight design.
This start device fits 2009–2015 Kawasaki KX250F models and 2009–2011 Kawasaki KX450F models. Manufacturer part number: 12-331. Vendor part number: 66-12331. The assembly features a laser-etched WORKS logo and is engineered, manufactured, and assembled in the USA.
The package includes a custom drill guide template and countersinking tool, along with detailed installation instructions featuring large step-by-step photos. The WORKS Pro Launch Start Device Red is used by race teams worldwide and is covered by U.S. Patent Nos. 8,727,081 and 9,394,963.
Features:
- Spring-less design delivers positive engagement and consistent release
- “Easy set by rider” start trigger
- CNC machined exclusively from aircraft-grade aluminum
- Lightweight complete assembly weighs 50 grams
- Fits 2009–2015 Kawasaki KX250F models
- Fits 2009–2011 Kawasaki KX450F models
- Custom drill guide template and countersinking tool included
- Detailed installation instructions include large step-by-step photos
- Laser-etched WORKS logo
- Engineered, manufactured, and assembled in the USA
- Used by race teams worldwide
- U.S. Patent Nos. 8,727,081 and 9,394,963
Fitment:
2009 Kawasaki KX250
2009 Kawasaki KX250F
2009 Kawasaki KX450F
2010 Kawasaki KX250F
2010 Kawasaki KX450F
2011 Kawasaki KX250F
2011 Kawasaki KX450F
2012 Kawasaki KX250F
2012 Kawasaki KX450F
2013 Kawasaki KX250F
2013 Kawasaki KX450F
2014 Kawasaki KX250F
2014 Kawasaki KX450F
2015 Kawasaki KX250F
2016 Kawasaki KX250F