{"product_id":"regina-520-dr-extra-drag-racing-chain-140-links-part-number-135dr-1002","title":"Regina 520 DR Extra Drag Racing Chain, 140 Links, Part Number 135DR\/1002","description":"520 DR Extra - Drag Racing Chain - 140 Links\n\u003cp\u003eThe Regina 520 DR Extra Drag Racing Chain is engineered for the severe demands of high-performance drag racing. Designed for applications up to the Pro Stock level, this 140-link chain provides dependable power transfer and durability under intense acceleration and racing conditions. The chain uses a 520-size configuration and is identified by Regina manufacturer part number 135DR\/1002 and vendor part number 135DR\/1002.\u003c\/p\u003e\u003cp\u003ePlates, pins, and rollers are shot-peened to improve fatigue resistance and help the chain withstand repeated high-load cycles. With a breaking strength of 10,566 pounds and a fatigue limit of 2,135 pounds, the Regina 520 DR Extra supports demanding racing setups when properly selected and installed for the vehicle. Its clip-and-rivet-style link is included for convenient installation and secure chain assembly.\u003c\/p\u003e\u003cp\u003eFitment is intended for compatible drag racing motorcycles and other 520-size chain applications requiring a 140-link configuration. Confirm sprocket compatibility, chain length, clearance, and the manufacturer’s installation requirements before use. The Regina brand is recognized for performance-oriented chain construction, making this model a suitable choice for racers seeking a purpose-built chain for severe drag racing service.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSize: 520 drag racing chain configuration\u003c\/li\u003e\n\u003cli\u003eModel: DR Extra\u003c\/li\u003e\n\u003cli\u003eLink Count: 140 links\u003c\/li\u003e\n\u003cli\u003eApplication: Designed for severe drag racing use up to Pro Stock level\u003c\/li\u003e\n\u003cli\u003eConstruction: Plates, pins, and rollers are shot-peened for improved fatigue resistance\u003c\/li\u003e\n\u003cli\u003eBreaking Strength: 10,566 pounds\u003c\/li\u003e\n\u003cli\u003eFatigue Limit: 2,135 pounds\u003c\/li\u003e\n\u003cli\u003eLink Type: Clip-and-rivet-style link included\u003c\/li\u003e\n\u003cli\u003eBrand: Regina\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 135DR\/1002\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 135DR\/1002\u003c\/li\u003e\n\u003cli\u003eFitment: Compatible with properly matched 520-size drag racing applications\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"REGINA","offers":[{"title":"Default Title","offer_id":67547510243563,"sku":"12210112","price":188.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/180800.png?v=1790678158","url":"https:\/\/ctracingservices.com\/products\/regina-520-dr-extra-drag-racing-chain-140-links-part-number-135dr-1002","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}