## **520 Chain Dimensions: Complete Size Chart, Specifications & Compatibility Guide**
If you ride a motorcycle and want to replace your drive chain, understanding **520 chain dimensions** is critical. A 520 chain is one of the most common sizes for sportbikes, dirt bikes, and naked motorcycles. This guide covers everything: size charts, specifications, compatibility, and expert tips.
### **What Does “520” Mean?**
The number “520” follows a standardized measurement system. The **first digit (5)** represents the chain pitch — the distance between pins — in eighths of an inch. So 5/8 inch (15.875 mm) is the pitch. The **last two digits (20)** indicate the roller width and inner width in eighths of an inch. A 520 chain has a nominal inner width of 1/4 inch (6.35 mm). This makes it lighter and narrower than a 530 chain but stronger than a 428.
### **520 Chain Size Chart & Specifications**
Here are the key dimensions you need to know:
– **Pitch:** 5/8 inch (15.875 mm)
– **Inner Width:** 1/4 inch (6.35 mm)
– **Roller Diameter:** 0.400 inch (10.16 mm)
– **Pin Diameter:** 0.225–0.250 inch (5.72–6.35 mm)
– **Tensile Strength:** 7,000–9,000 lbs (depending on brand and rating)
– **Weight:** ~1.5–2.0 lbs per 100 links
These specs vary slightly by manufacturer. Always check the chain’s specific data sheet before buying.
### **520 vs 525 vs 530: Compatibility**
Many riders ask if they can swap a 525 or 530 for a 520. The answer: **No, without changing sprockets.** A 520 chain will not fit sprockets designed for wider chains. The **520 chain dimensions** differ from 525 (5/8 inch pitch, 5/16 inch inner width) and 530 (5/8 inch pitch, 3/8 inch inner width). A 520 chain is narrower and lighter.
**Compatible bikes** include most 600cc sportbikes (Yamaha R6, Honda CBR600RR, Kawasaki ZX-6R), 450cc motocross bikes (Honda CRF450, Yamaha YZ450F), and many dual-sport models. Always confirm with your owner’s manual or sprocket part number.
### **How to Measure and Choose the Right 520 Chain**
**Step 1:** Count the links on your old chain or check the manual for the exact length.
**Step 2:** Verify sprocket sizes — 520 sprockets have a thinner tooth width.
**Step 3:** Choose the right tensile strength and seal type (O-ring, X-ring, or non-sealed).
**Step 4:** For a deeper dive into motorcycle chain sizing, refer to this detailed guide on 520 chain dimensions.
### **Frequently Asked Questions (FAQ)**
**Q: Can I use a 520 chain on a 530 sprocket?**
A: No. The sprocket is too wide. You must replace sprockets to match the chain size.
**Q: What is the maximum horsepower for a 520 chain?**
A: High-quality 520 chains handle up to 100–120 HP. For higher output, consider a 525 or 530.
**Q: How often should I replace a 520 chain?**
A: Every 10,000–15,000 miles, or when stretch exceeds 1% of length.