The Regina 520 DR Extra Drag Racing Chain is engineered for the severe demands of competitive drag racing. This 130-link chain is designed for high-performance applications through Pro Stock level racing, providing dependable power transfer and durability under demanding acceleration and load conditions. The chain’s 520-size construction is suitable for compatible high-performance motorcycle and racing drivetrain setups.
Plates, pins, and rollers are shot-peened to improve fatigue resistance and help withstand repeated stress during racing use. With a breaking strength of 10,566 pounds and a fatigue limit of 2,135 pounds, the Regina 520 DR Extra offers performance characteristics suited to properly matched drag racing applications. Always confirm chain size, link count, sprocket compatibility, and drivetrain requirements before installation.
This Regina chain includes a clip-and-rivet-type link for secure installation when used according to the manufacturer’s procedures. The product is identified by manufacturer part number 135DR/1001 and vendor part number 135DR/1001. As a specialized racing component, installation should be performed by a qualified technician, with correct alignment, tension, lubrication, and safety inspection completed before operation.
Features:
- Size: 520 drag racing chain
- Model: DR Extra
- Link count: 130 links
- Application: Designed for severe drag racing use through Pro Stock level applications
- Construction: Shot-peened plates, pins, and rollers for improved fatigue resistance
- Breaking strength: 10,566 pounds
- Fatigue limit: 2,135 pounds
- Included link: Clip-and-rivet-type link
- Brand: Regina
- Manufacturer part number: 135DR/1001
- Vendor part number: 135DR/1001
- Fitment: For compatible 520-size motorcycle and racing drivetrain systems; verify sprocket and application compatibility before installation