Athena USA ATHNA 490CC B/BORE KT CRF450R'09-11 (P4 # P400210100030 NEW

2-STROKE KITS

• “RACE” CYLINDER KITS INCLUDE A NICKEL CARBIDE COATED CYLINDER PORTED TO FACTORY “WORKS” SPECS., SPECIAL HARD ANODIZED EXHAUST VALVES, COMPLETE PISTON KIT AND A TOP END GASKET SET
• “FACTORY” CYLINDER KITS INCLUDE ALL PARTS IN THE “RACE” KITS PLUS AN ALUMINUM CYLINDER HEAD WITH REMOVABLE BRASS DOME ALLOWING FOR HIGHER COMPRESSION AND ANTI-DETONATING FEATURES

4-STROKE KITS

• AVAILABLE IN STANDARD BORE AND BIG BORE SIZES
• 4-STROKE KITS INCLUDE A NICKEL CARBIDE COATED CYLINDER DESIGNED WITH WIDER WATER JACKETS, COMPLETE PISTON KIT AND A TOP END GASKET SET