The Regina 520 DR Extra Drag Racing Chain is engineered for the severe demands of competitive drag racing. This 520-size chain includes 160 links and is designed for high-performance applications through Pro Stock-level use. Regina manufactures the chain with shot-peened plates, pins, and rollers to improve fatigue resistance and support reliable performance under repeated acceleration and load cycles.
With a breaking strength of 10,566 pounds and a fatigue limit of 2,135 pounds, the Regina 520 DR Extra provides the strength required for demanding racing powertrains when properly selected and installed. The chain is supplied with a clip-and-rivet-type master link for installation and service. Confirm vehicle, sprocket, and drivetrain fitment before ordering, as compatibility depends on the motorcycle or racing application and the selected 520 chain components.
This Regina drag racing chain is suitable for racers, performance builders, and specialty powersports applications requiring a durable, high-strength chain. The manufacturer part number is 135DR/1004, and the vendor part number is also 135DR/1004. Use the Regina brand and part number when verifying replacement requirements, installation specifications, and fitment with the vehicle or drivetrain manufacturer.
Features:
- Size: 520 chain size
- Model: DR Extra Drag Racing Chain
- Brand: Regina
- Manufacturer: Regina
- Manufacturer Part Number: 135DR/1004
- Vendor Part Number: 135DR/1004
- Link Count: 160 links
- Construction: Plates, pins, and rollers are shot-peened for improved fatigue resistance
- Breaking Strength: 10,566 pounds
- Fatigue Limit: 2,135 pounds
- Application: Designed for severe drag racing use up to Pro Stock-level applications
- Master Link: Clip-and-rivet-type link included