TOP END KIT CAST REPLICA 53.94/STD GAS/HUSQ/KTM 2014 KTM 65 SX 1989 Yamaha YZ490

1989 Yamaha YZ490

we recommend a racing exhaust

lace attachment

It offers the best combination of performance and price

Engineered to provide the best possible path for combustion chamber heat transfer to the cylinder walls

TOP END KIT CAST REPLICA 53.94/STD GAS/HUSQ/KTM 2014 KTM 65 SX 1989 Yamaha YZ490Vertex Top End Piston Kits features: New T box forgings and DLC coated wrist pins on forged pistons with highest compression ratios for increased strength and performance. All piston skirts are coated with a high tech Molybdenum Disulfide coating for faster break in time and increased piston life Cast piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston. Forged