Big Bore 102mm 686cc Cylinder Piston Gasket Set for Yamaha YFM660 Grizzly/Raptor/Rhino 660 (2001-2004)
Precision-machined 102mm aluminum alloy cylinder with reinforced cast iron liner ensures superior heat dissipation and durability. High-compression forged piston kit includes premium steel wrist pins and nickel-plated rings for reduced friction and extended engine life. Multi-layer steel (MLS) head gasket prevents leaks under extreme pressure. Direct bolt-on upgrade for Yamaha YFM660 Grizzly, Raptor 660, and Rhino 660 models (2001-2004). Ideal for off-road enthusiasts seeking increased displacement (+50cc) and torque without engine block modification. CNC-balanced components guarantee smooth performance in mud, trails, or dunes. Complete gasket set includes base, head, and valve cover seals made from heat-resistant composite fiber. OEM-spec tolerances ensure perfect fitment. Factory-tested for reliability under heavy load conditions. Wholesale-priced for bulk orders. Ships globally with guaranteed lowest markup. Stock covers full Yamaha ATV/UTV lineup—ask for volume discounts.