- Single spring, low drag design increases horsepower
- Springs can only be used on titanium valves
- Designed for use with most cam grinds
- Purpose built racing valve spring made from the highest quality Kobe spring wire
Honda -- CRF450X -- (2008, 2009, 2014, 2012, 2007, 2010, 2005, 2011, 2013, 2006, 2016, 2015, 2017); Honda -- CRF450R -- (2004, 2007, 2005, 2008, 2002, 2003, 2006); Honda -- TRX450R -- (2009, 2008, 2007, 2012, 2006, 2004); Honda -- TRX450R Sportrax -- (2005, 2004)