WSM Piston Kit - Honda 400 - +1 mm 50-230-07K Sequence Chest Guard Provides perfect seal to the

Provides perfect seal to the stock gas tanks

Insulation on backhand for additional warmth and heat retention

Poly overlay front and back yokes

2004-2017 Honda CRF450X - - 2002-2010 Honda CRF450R - - 1990-2007 Honda CR250R - - 1985-2001 Honda CR500R

empowering you to choose from our vast library of pre-tested tunes or to build one yourself

WSM Piston Kit - Honda 400 - +1 mm 50-230-07K Sequence Chest Guard Provides perfect seal to theQuality and construction that meets or exceeds OEM Feature improved E clip design Contain piston, rings, pin and clips Additional rings available separately Order one per cylinder Skirts have a nonabrasive, expansion retarding MOS2 coating to reduce heat and friction for added power and longevity MOS2 coating actually draws heat through piston walls and out the bottom Specially hardened tops add strength to ring grooves