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Vertex - Piston Kit (Honda)
When it comes to power and performance, Vertex piston kits are what you need. Forged from the highest quality 2618 aluminum alloy, the Vertex pistons are the best choice to handle the high demands of today's 4-stroke racing engines. Utilizing a unique coating to reduce wear and help with break-in process, Vertex pistons are the most widely used pistons in every race engine today. Every piston kit comeswith a complete set of nitride coated or chrome plated piston rings, a fully case hardened wrist pin and circlips all at a competitive price.
When you want true performance, there is not other choice but Vertex Pistons for your Honda 4-stroke motocross bike.
Some tips for installation of Vertex pistons:
After disassembling the cylinder head and the cylinder, it's necessary to measure the actual cylinder diameter (1), using a dial bore gauge. When actual bore size is known then it is time to pick the right VERTEX piston to fit your bore size, respecting the clearance suggested with the cylinder (i.e. CRF450 clearance 0.05 mm). Attention must be paid to any markings (i.e. T) on the rings surface: always position the ring with the written part on the top side.
To assemble the rings on the piston you must start from the oil ring and introducing as first the spring (2) paying attention to not place one on the top of the other the two extremities. After setting the two foils one up and the other down at direct contact with the groove, taking care that the open tips must be at 1200 from the spring open tips.
We are now ready to assemble the compression ring(s) into the piston groove(s): first of all pay attention to not crush or damage the ring during installation, every precaution should be taken not to compromise the ring integrity with the groove and to not reduce the rings retaining pressure.