Yamaha YXZ1000 Engine Kits Yamaha Kit - OEM Yamaha Parts This is the spec kit for our Stage 1, 2, and 3 Turbo Kits 9.5:1 Compression piston and connection rod set Piston Rings Sidewinder Head Bolts Wrist Pins and clips Upgraded head gasket Oil Pan Gasket Stator Cover... MSRP: Was: Now: $1,399.99 Choose Options