JT 13T Front Sprocket Steel Black - SCM415 Chromoly, Heat-Treated Direct-Fit

This front sprocket is engineered to deliver consistent power transfer and long service life without compromising fitment. Manufactured from premium SCM415 chromoly steel, each sprocket is heat treated and hand finished to ensure dimensional accuracy and resistance to wear. JT runs every sprocket through a ten-step quality-control process, so riders get a reliable replacement part ready for installation.

How does this sprocket improve drivetrain longevity?

The JTF516.13 uses SCM415 chromoly steel and a heat-treatment process that increases surface hardness while preserving core toughness. That combination reduces premature tooth wear and deformation under load, helping chain and sprocket life align more closely.

• High-grade SCM415 chromoly construction resists fatigue and cracking
• Heat treatment increases wear resistance on contact surfaces
• Hand finishing ensures consistent tooth profiles for even chain engagement

Will it fit my bike and how easy is it to install?

This 13-tooth front sprocket is a direct-fit replacement when it matches your model’s part number and bolt pattern. Installation is straightforward for anyone familiar with sprocket swaps: remove the front sprocket cover, loosen the countershaft nut, swap sprockets, torque to spec, and realign the chain.

• Direct replacement for compatible models with the JTF516.13 spec
• Standard countershaft installation—no special tools beyond common workshop gear
• Consistent machining reduces the need for trial fitting or shims

What performance changes can I expect from a 13T front sprocket?

Moving to a 13-tooth front sprocket changes final drive ratio and can alter acceleration and top speed characteristics depending on your rear sprocket and tire size. Typically, a smaller front sprocket increases acceleration slightly while lowering achievable top speed, useful for technical riding where quicker response is desired.

• Slight increase in acceleration compared with larger front sprockets
• Marginal reduction in top-end speed depending on rear gearing
• Improved throttle response in stop-and-go or technical terrain situations

How does JT ensure quality and consistency?

JT Sprockets subjects every item to a ten-point quality control routine that checks material, dimensions, tooth profile, heat treatment, and finish. The combination of CNC machining, heat treatment, and hand finishing minimizes manufacturing variances so each sprocket meets strict powersports standards.

• CNC machining for precise tooth geometry and bolt pattern accuracy
• Ten quality control inspections before shipment
• Hand finishing for burr-free edges and uniform contact surfaces

Who is this for? Riders and mechanics seeking a durable, precisely machined front sprocket for performance-oriented or everyday riding will benefit from the JT JTF516.13. It’s ideal for those who want a reliable replacement part made from chromoly steel, a consistent fitment process, and the reassurance of factory quality checks. Choose this sprocket if you prioritize drivetrain longevity, accurate tooth profiles, and predictable gearing changes.