{"product_id":"renthal-twinring-rear-sprocket-520-51t-black","title":"Renthal Twinring Rear Sprocket 520-51t Black","description":"\u003cp\u003eThe Renthal Twinring™ rear sprocket provides the ultimate combination of light weight and exceptional durability. Engineered for performance and longevity, this sprocket is a top choice for demanding riders.\u003c\/p\u003e\n\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eRenthal's Twinring™ rear sprocket utilizes a unique two-piece design. The inner ring is machined from high-strength Ultralight™ 7075 T-6 aluminum, the same material used in Renthal's renowned standard sprockets, ensuring minimal weight and maximum strength. The outer ring is constructed from electro-less nickel-coated steel, providing exceptional wear resistance and a long service life. This outer ring is carefully engineered with minimal material to maintain a low overall weight. The two rings are permanently bonded using an interference fit achieved by expanding the outer ring at 200°C before assembly, combined with a wave pattern to ensure a secure connection. Flat socket head screws further enhance the chainwheel's strength, especially during side impacts, and prevent contact with the chain guide. Self-cleaning mud grooves between each tooth prevent dirt buildup, reducing chainwheel wear and minimizing weight. The Renthal Twinring™ sprocket lasts up to three times longer than a standard all-aluminum sprocket while remaining significantly lighter than an all-steel rear sprocket. Upgrade to the Renthal Twinring™ for superior performance and durability on the track or trail.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eInner ring made from Ultralight™ 7075 T-6 aluminum for maximum strength and minimal weight.\u003c\/li\u003e\n  \u003cli\u003eElectro-less nickel-coated steel outer ring provides exceptional durability and wear resistance.\u003c\/li\u003e\n  \u003cli\u003eUnique two-piece design offers the best combination of light weight and long life.\u003c\/li\u003e\n  \u003cli\u003eInterference fit and wave pattern ensure a permanent bond between the inner and outer rings.\u003c\/li\u003e\n  \u003cli\u003eFlat socket head screws add additional strength and prevent chain guide contact.\u003c\/li\u003e\n  \u003cli\u003eSelf-cleaning mud grooves prevent dirt buildup and reduce wear.\u003c\/li\u003e\n  \u003cli\u003eOutlasts standard aluminum sprockets by up to 3x while being lighter than steel sprockets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: Renthal\u003c\/li\u003e\n  \u003cli\u003eProduct Name: Sprocket\u003c\/li\u003e\n  \u003cli\u003eMounting Position: Rear\u003c\/li\u003e\n  \u003cli\u003eChain Size: 520\u003c\/li\u003e\n  \u003cli\u003eTooth Count: 51\u003c\/li\u003e\n  \u003cli\u003eMaterial: 7075-T6 Aluminum \u0026amp; Nickel-coated Steel\u003c\/li\u003e\n  \u003cli\u003eColor\/Finish: Black\u003c\/li\u003e\n  \u003cli\u003eType: Drive\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant to know\u003c\/h2\u003e\n\u003cp\u003eNo additional hardware is included.\u003c\/p\u003e","brand":"Renthal","offers":[{"title":"Default Title","offer_id":53705100722506,"sku":"12100806","price":143.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/389f5f969721a5706366004c6d1f2e2f.webp?v=1767468248","url":"https:\/\/partsdenmark.com\/it\/products\/renthal-twinring-rear-sprocket-520-51t-black","provider":"Parts Denmark","version":"1.0","type":"link"}