Wossner is Germany's finest aftermarket forged piston and rod manufacturer and have over 25 years of experience in the high-performance racing industry. Top European racers and FIM World Champions rely on Wossner for only the best pistons, rods and customer service.Features In-house designed and manufactured; all forgings are produced in Wossner's company-owned forging operation 4-stroke pistons are made using a double-bridged forging design Lightweight pistons with the tightest piston-wall clearances in the industry give you a quieter running engine All pistons include piston, ring, wrist pin and pin locks Wossner pistons are used by leading Supercross, Arenacross and MX GP teams Made in Germany Specifications Piston Size: 101.94mm Oversize: Standard Replacement Rings: 1020XSU Replacement Wrist Pin: WP024 Replacement Circlip: CW23 Fits: Yamaha YFM700F GRIZZLY 2008-2011 YFM700FAP GRIZZLY EPS AUTO 2007-2010 2012 YFM700FAP GRIZZLY EPS AUTO 4X4 2008-2010 YFM700FAP/SE GRIZZLY EPS AUTO 4X4 2013 YFM700R RAPTOR 2WD 2006-2010 2012-2015 2017-2021 YXR700FA RHINO 2008-2013 YXR700FA RHINO FI 2013