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The WORKS Pro Launch Start Device Red, model 12-400, is a spring-less start device designed to deliver positive engagement and consistent release. Its rider-set start trigger supports straightforward operation, while the CNC-machined aircraft-grade aluminum construction provides a lightweight complete assembly weighing 50 grams.
This start device fits 2002–2011 Yamaha YZ85 models. The assembly is engineered, manufactured, and assembled in the USA and features a laser-etched WORKS logo. Installation support includes a custom drill guide template, countersinking tool, and detailed instructions with large step-by-step photos.
Manufacturer part number: 12-400. Vendor part number: 66-12400.
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 2002–2011 Yamaha YZ85 models
- Includes a custom drill guide template and countersinking tool
- Detailed installation instructions include large step-by-step photos
- Laser-etched WORKS logo
- Engineered, manufactured, and assembled in the USA
- U.S. Patent Nos. 8,727,081 and 9,394,963
Fitment:
2002 Yamaha YZ85
2003 Yamaha YZ85
2004 Yamaha YZ85
2005 Yamaha YZ85
2006 Yamaha YZ85
2007 Yamaha YZ85
2008 Yamaha YZ85
2009 Yamaha YZ85
2010 Yamaha YZ85
2011 Yamaha YZ85
2012 Yamaha YZ85
2013 Yamaha YZ85
2014 Yamaha YZ85
2015 Yamaha YZ85
2016 Yamaha YZ85
2017 Yamaha YZ85
2018 Yamaha YZ85