Crankcase - Yamaha YZ85 Made of special steel and manufactured with CNC high-precision machinery, Standard stroke

Crankshaft - Yamaha Made of special steel and manufactured with CNC high-precision machinery, Standard stroke

Cylinder Gasket Kit - Gas Gas/Yamaha - 54 mm This engine gasket set includes all the gaskets needed for Athena's Big Bore Cylinder Kit, Low moisture absorption, highest mechanical resistance, resistance to oils and gasoline, resistance to high temperatures and...

Cylinder Gasket Kit - Kawasaki - 54 mm This engine gasket set includes all the gaskets needed for Athena's Big Bore Cylinder Kit, Low moisture absorption, highest mechanical resistance, resistance to oils and gasoline, resistance to high temperatures and pressures,...

Cylinder Gasket Kit - Yamaha Replacement cylinder gasket kit for Athena 70cc bolt-on big bore kit, Athena’s gaskets have low moisture absorption, highest mechanical resistance, resistance to oils and gasoline, resistance to high temperatures and pressures, easy removal

Cylinder Gasket Kit - Yamaha Replacement cylinder gasket kit for Athena 70cc bolt-on big bore kit, Athena’s gaskets have low moisture absorption, highest mechanical resistance, resistance to oils and gasoline, resistance to high temperatures and pressures, easy removal

Cylinder Kit - 100.00 mm - LTR450 Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), Forged piston with molybdenum coating, Does not include cylinder head.

Cylinder Kit - 100.00 mm - RMZ450 Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), Forged piston with molybdenum coating, Does not include cylinder head.

Cylinder Kit - 100.00 mm - RMZ450 Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), Forged piston with molybdenum coating, Does not include cylinder head.

Cylinder Kit - 100.00 mm - TRX450R/ER Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), Forged piston with molybdenum coating, Does not include cylinder head.

Cylinder Kit - 102.00 mm - YZ450F Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), Forged piston with molybdenum coating, Does not include cylinder head.

Cylinder Kit - 47.50 mm - YZ85 Aluminum cylinder is nickel carbide coated designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), There is an aluminum cylinder head with a removable bronze dome...

Cylinder Kit - 47.66 mm - BW/Zuma 1 Kit includes complete aluminum cylinder, with a nickel carbide plated bore, cylinder head, piston, rings, 10 mm wrist pin, circlips, carbon reeds and all required top-end gaskets, This cylinder kit can be...

Cylinder Kit - 47.66 mm - Vino 50/Jog/Zuma2 Kit includes complete aluminum cylinder, with a nickel carbide plated bore, cylinder head, piston, rings, 10 mm wrist pin, circlips, carbon reeds and all required top-end gaskets, This cylinder kit can be...

Cylinder Kit - 50.00 mm - KX65 Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome , Specially designed, high performance, hard anodized power valves (cannot use OEM), Kit also includes Athena top end gasket...

Cylinder Kit - 50.00 mm - SX65 Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome , Specially designed, high performance, hard anodized power valves (cannot use OEM), Kit also includes Athena top end gasket...

Cylinder Kit - 53.00 mm - YZ85 Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome , Specially designed, high performance, hard anodized power valves (cannot use OEM), Kit also includes Athena top end gasket...

Cylinder Kit - 54.00 mm - KX125 Aluminum cylinder is nickel carbide coated designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), There is an aluminum cylinder head with a removable bronze dome...

Cylinder Kit - 54.00 mm - YZ125 Aluminum cylinder is nickel carbide coated designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), There is an aluminum cylinder head with a removable bronze dome...

Cylinder Kit - 54.00 mm - YZ125 Aluminum cylinder is nickel carbide coated designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), There is an aluminum cylinder head with a removable bronze dome...

Cylinder Kit - 54.00 mm - YZ125 Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome , Specially designed, high performance, hard anodized power valves (cannot use OEM), Kit also includes Athena top end gasket...

Cylinder Kit - 54.00 mm - YZ125 Race Aluminum cylinder is nickel carbide coated designed with larger water jackets, Specially designed, high performance, hard anodized power valves (cannot use OEM), There is an aluminum cylinder head with a removable bronze...

Cylinder Kit - 58.00 mm - KX125 Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome , Specially designed, high performance, hard anodized power valves (cannot use OEM), Kit also includes Athena top end gasket...

Cylinder Kit - 58.00 mm - YZ125/X Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome , Specially designed, high performance, hard anodized power valves (cannot use OEM), Kit also includes Athena top end gasket...