{"product_id":"renthal-520-42p-rear-sprocket-model-397u-520-42p-ha","title":"Renthal 520-42P Rear Sprocket, Model 397U-520-42P-HA","description":"Renthal UltraLight Rear Chainwheels are CNC machined from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer.  A combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see why Renthal's light weight all aluminum rear sprockets can be found on the rear wheels of many factory race team machines.\n\u003cp\u003eThe Renthal UltraLight Rear Chainwheel is a CNC-machined rear sprocket made from 7075 T6 aluminum. Model 397U-520-42P-HA features a 520 chain size and 42 teeth, providing a lightweight alternative to steel sprockets for powersports applications.\u003c\/p\u003e\u003cp\u003eComputer engineered and tested for precise fitment, concentricity, and load dispersion, this rear sprocket uses tooth profiling designed to support efficient power transfer. Its high-strength aluminum construction, advanced manufacturing methods, and hardwearing surface treatment are intended for demanding riding conditions.\u003c\/p\u003e\u003cp\u003eThis sprocket is listed for 2020 BST Carbon, Marchesini, and OZ Racing wheels with a 76 x 100 PCD rear sprocket pattern. Verify the wheel, chain size, tooth count, and mounting pattern before purchase. The manufacturer part number is 397U-520-42P-HA, and the vendor part number is 397U-520-42P-HA.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Renthal\u003c\/li\u003e\n\u003cli\u003eModel: 397U-520-42P-HA\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 397U-520-42P-HA\u003c\/li\u003e\n\u003cli\u003eVendor part number: 397U-520-42P-HA\u003c\/li\u003e\n\u003cli\u003eApplication: 2020 BST Carbon, Marchesini, and OZ Racing wheels\u003c\/li\u003e\n\u003cli\u003eMounting pattern: 76 x 100 PCD\u003c\/li\u003e\n\u003cli\u003eChain size: 520\u003c\/li\u003e\n\u003cli\u003eTooth count: 42 teeth\u003c\/li\u003e\n\u003cli\u003eMaterial: CNC-machined 7075 T6 aluminum\u003c\/li\u003e\n\u003cli\u003eConstruction: UltraLight rear chainwheel designed to be 66% lighter than steel\u003c\/li\u003e\n\u003cli\u003eTooth profile: Designed for power transfer and load dispersion\u003c\/li\u003e\n\u003cli\u003eManufacturing: Computer engineered and tested for fitment and concentricity\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nAir Freight Prohibited: false\u003cbr\u003e\nNot Carb Approved: false\u003cbr\u003e\nLtl Freight Required: false\u003cbr\u003e\nProp 65: Unknown\u003cbr\u003e\nPart Type: powersports\u003cbr\u003e\nEpa: N\/A\u003cbr\u003e\nCarb Acknowledgement Required: false\u003cbr\u003e\nRegular Stock: t\u003cbr\u003e\nUnits Per Sku: 1","brand":"Renthal","offers":[{"title":"Default Title","offer_id":68302938603755,"sku":"596683","price":94.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/0898e70243566ff0928d6080a022f1f4_dbc428ef-03b4-44f7-ab33-fe2148c00248.jpg?v=1793253267","url":"https:\/\/ctracingservices.com\/products\/renthal-520-42p-rear-sprocket-model-397u-520-42p-ha","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}