Fitment: 2019 to present Yamaha YZ85.

• ✅ Set Chain Slack to Factory Spec – No more guessing with finger widths or rulers. This tool makes chain maintenance quick, accurate, and consistent.
• 🔧 Protects Your Drivetrain – Correct slack helps prevent premature wear on chain guides and sprockets.
• 🏁 Made in the USA – Designed, tested, manufactured, packed and shipped by Adrenaline Addicts out of our shop in New Hampshire.
• 🧰 Includes Keychain Ring – Keep it on hand in your toolbox or on your keychain.