Weisco Piston Big Bore kit for Yamaha Sr500 motor oil Come with needle and seat

Come with needle and seat if removable on OEM

NOTE: Full systems with our reverse cone muffler come with a welded on mounting bracket and stainless hose clamp to attach muffler

Need a new Supersprox rear sprocket

polished or Shot Blast finish

these kits come with everything you will need to completely rebuild them

Weisco Piston Big Bore kit for Yamaha Sr500 motor oil Come with needle and seatFeatures Pistons come without gasket kit Specs Product Name: Piston Piston Material: Aluminum Alloy Forged Bore Size: 90 mm 90,00 mm Piston Size: +3,00 mm +3. 00 mm Displacement: 499 cc Stroke Length: 84. 00 mm 84,00 mm Compression Ratio: 9,0: 1 9. 0: 1 Engine Type: 4 Stroke Units: Each Fitments: 1976 1981 Yamaha XT 500 1977 1981 Yamaha SR 500 Ships in 4 5 days