What Size Chain Does My 2020 Beta 300 RR Dirt Bike Use?

Shop Dirt Bike Parts for a 2020 Beta 300 RR Dirt Bike.

Why the Correct Chain Size Matters for Your 2020 Beta 300 RR

Using the correct chain size on your 2020 Beta 300 RR is essential for optimal performance, safety, and longevity of your drivetrain. The right chain ensures smooth power delivery, reduces wear on your sprockets, and helps prevent unexpected failures on the trail or track. Beta's 300 RR is a high-performance enduro machine, and matching it with the proper chain size is key to keeping your ride reliable and responsive.

What Chain Size Does the 2020 Beta 300 RR Use?

The 2020 Beta 300 RR typically uses a 520 chain size as its OEM specification. This is the most common size for this model and is well-suited to the bike's power and intended use. While most trims and regional versions of the 300 RR use the 520 chain, it's always wise to double-check your specific bike, especially if it's been modified or if you're unsure of its history. If you're uncertain, you can verify the chain size by checking the markings on your current chain or consulting your owner's manual.

Understanding Dirt Bike Chain Sizes

A chain size like "520" refers to two key measurements:
  • Pitch: The distance between the centers of two adjacent pins (5/8 inch for a 520 chain).
  • Width: The internal width between the inner plates (2/8 inch for a 520 chain).
Many dirt bikes, including the 2020 Beta 300 RR, use the 520 size because it offers a strong balance of durability and weight for off-road riding. This size is robust enough to handle the 300 RR's torque while keeping unsprung weight low for better handling.

How Many Links Does the Chain Have?

The OEM chain for the 2020 Beta 300 RR generally comes with 118 links. However, the exact number can vary based on:
  • Aftermarket or custom sprocket sizes
  • Axle position adjustments
  • Wheelbase modifications
If you've changed your sprockets or adjusted your wheelbase, you may need a slightly longer or shorter chain. Always check your current setup before ordering a replacement.

Factors That Can Affect Chain Size or Length

Several factors can influence the ideal chain size or length for your 2020 Beta 300 RR:
  • Riding Type: Aggressive motocross or enduro riding may require a stronger chain or different gearing.
  • Engine Displacement and Torque: The 300 RR's powerful two-stroke engine is well-matched to a 520 chain, but higher torque setups may need reinforced options.
  • Aftermarket Sprockets: Changing sprocket sizes alters the required chain length.
  • Suspension Setup: Modifications to suspension or wheelbase can also affect chain length.

How to Confirm the Correct Chain for Your Bike

To ensure you get the right chain for your 2020 Beta 300 RR, follow these steps:
  1. Check the side plates of your current chain for stamped size markings (e.g., "520").
  2. Count the number of links, including the master link.
  3. Consult your owner's manual for OEM specifications.
  4. If in doubt, measure the pitch (distance between pins) and width (between inner plates) with a caliper.
These steps will help you confidently select the correct replacement chain.

When Should You Replace Your Chain?

Replace your chain if you notice:
  • Excessive stretching or kinking
  • Stiff or seized links
  • Visible wear or damage to rollers and side plates
  • Difficulty maintaining proper tension
It's best practice to replace your chain and sprockets together, as worn components can quickly damage new parts. Riding with a worn or incorrect chain increases the risk of breakage, poor shifting, and even drivetrain failure, which can leave you stranded or cause further damage to your 2020 Beta 300 RR.

Related Shopping Categories

Shop Chains for a 2020 Beta 300 RR Dirt Bike.

Shop Sprockets for a 2020 Beta 300 RR Dirt Bike.

Shop Chain and Sprocket Kits for a 2020 Beta 300 RR Dirt Bike.

Shop Chain Cleaners for a 2020 Beta 300 RR Dirt Bike.

Shop Chain Lubricant for a 2020 Beta 300 RR Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.