{"product_id":"top-end-piston-kit-vertex-78-97mm-honda-crf250r-22-on-crf250rx-22-on","title":"TOP END PISTON KIT VERTEX 78.97MM HONDA CRF250R 22-ON CRF250RX 22-ON","description":"\u003cp\u003eManufactured in Italy, Vertex pistons are the leading choice for replacement pistons worldwide. Trusted by OEMs such as KTM, Husqvarna, Beta, and Gas Gas, Vertex provides state-of-the-art, high-quality pistons for nearly any powersports application. The company's collaboration with factory race teams on piston design demonstrates their commitment to quality and affordability.\u003c\/p\u003e\n\n\u003cp\u003eVertex piston kits include the piston, rings, wrist pin, and circlips. Each piston is heat-treated with a T-6 hardening and tempering cycle and features a molybdenum disulphide skirt coating to reduce wear and enhance the break-in phase.\u003c\/p\u003e\n\n\u003cp\u003eForged Pistons for 4-Stroke Engines\u003c\/p\u003e\n\n\u003cp\u003eFour-stroke engines, with their higher cylinder pressures compared to two-strokes, require robust construction. Vertex’s four-stroke pistons are forged from high-quality 2618 aluminum alloy for superior strength and durability. Unique piston profiles and compression ratios, available in A, B, C, and D sizes, maximize power and performance while minimizing blow-by and oil consumption.\u003c\/p\u003e\n\n\u003cp\u003eCast Pistons for 2-Stroke Engines\u003c\/p\u003e\n\n\u003cp\u003e- Cast pistons are ideal for two-stroke engines due to their higher silicon content, which is beneficial compared to forged pistons. Vertex pistons are gravity cast from an aluminum alloy with 18% silicon content. Silicon is crucial because:\u003c\/p\u003e\n\n\u003cp\u003e- It reduces thermal expansion, maintaining geometry after the piston reaches operating temperature. This allows for tighter tolerances compared to forged pistons, improving power and performance while reducing rattling and breaking.\u003c\/p\u003e\n\n\u003cp\u003eIt enhances wear characteristics and prolongs piston life by minimizing wear on the piston skirt.\u003c\/p\u003e","brand":"Injection Moto","offers":[{"title":"Default Title","offer_id":44813325369517,"sku":"8VTKTC24575B","price":429.95,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1612\/3309\/files\/eyJidWNrZXQiOiJ3ZWItbmluamEtaW1hZ2VzIiwia2V5IjoiZm9ybXVsYTQ1NFwvaW1hZ2VzXC9wcm9kaW1nXC8yMjIzMF8xLmpwZyIsImVkaXRzIjp7InJlc2l6ZSI6eyJ3aWR0aCI6NDgwLCJoZWlnaHQiOjQ4MCwiZml0IjoiaW5zaWRlIiw.jpg?v=1755303495","url":"https:\/\/injectionmoto.co.nz\/products\/top-end-piston-kit-vertex-78-97mm-honda-crf250r-22-on-crf250rx-22-on","provider":"Injection Moto","version":"1.0","type":"link"}